EP0062292A2 - Procédé pour la préparation d'une émulsion de refroidissement ainsi que son application - Google Patents
Procédé pour la préparation d'une émulsion de refroidissement ainsi que son application Download PDFInfo
- Publication number
- EP0062292A2 EP0062292A2 EP82102703A EP82102703A EP0062292A2 EP 0062292 A2 EP0062292 A2 EP 0062292A2 EP 82102703 A EP82102703 A EP 82102703A EP 82102703 A EP82102703 A EP 82102703A EP 0062292 A2 EP0062292 A2 EP 0062292A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixture
- weight
- water
- added
- emulsion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/02—Water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/18—Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty carbon atoms]
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty carbon atoms]
- C10M2215/082—Amides [having hydrocarbon substituents containing less than thirty carbon atoms] containing hydroxyl groups; Alkoxylated derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
- C10M2215/28—Amides; Imides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/01—Emulsions, colloids, or micelles
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2070/00—Specific manufacturing methods for lubricant compositions
- C10N2070/02—Concentrating of additives
Definitions
- Drilling, cutting and grinding emulsions are generally used for cooling saws, grinding machines, drilling machines and the like, in order to dissipate the heat occurring during the machining of workpieces and, as a result, increased wear on the tools, which occurs with excessive Avoid heating the same.
- So far so-called drilling oils have been used for this purpose, which were essentially water-solubilized mineral oils.
- the water solubility of the mineral oils is usually achieved by adding sodium hydroxide solution to a mixture of resin oil, olein or the like until the end product can be smoothly emulsified with water.
- sulfide leachate, tar oils and waste oils are also used, which are made water-soluble essentially using the same process.
- Such products are often mixed with disinfectant and rust-preventing components such as nitrite, chromium compounds or other substances.
- drilling oils are not biodegradable according to the prior art.
- the object is achieved according to the invention by a process in which a mixture of about 3 to 45% by weight of natural wax (s) of animal and / or vegetable origin, 0.1 to 0.45% by weight of a commercially available emulsifier, the rest about 50% by weight of water, about 37.5% by weight of di-ethanolamine (s) and about 12.5% by weight of tri-ethanolamine (s) aqueous di / tri-ethanol mixture , then the mixture is brought to a boil with stirring, after dissolution of the wax fraction is cooled to a reaction temperature with stirring and then, after amination of the wax fraction by the di / tri-ethanol mixture, it is cooled down to the use temperature.
- a mixture of about 3 to 45% by weight of natural wax (s) of animal and / or vegetable origin, 0.1 to 0.45% by weight of a commercially available emulsifier, the rest about 50% by weight of water, about 37.5% by weight of di-ethanolamine (s) and about 12.5% by weight of tri-ethanolamine (s)
- the cooling emulsion according to the invention also has better properties than previously known emulsions in its mode of action as drilling oil.
- the drilling, cutting and grinding emulsions have an above-average heat dissipation, so that a rapid cooling of the work place by heat dissipation to the total coolant in the reservoir causes.
- the cut surfaces in cast iron have smoother cut surfaces when using the cutting emulsion according to the invention than could previously be achieved with conventional ones, surprisingly less wear on the tools being observed. This could also be due to the excellent sliding properties of the emulsion according to the invention, since even when used in machine tools, the smooth running can improve the operation compared to that with known drilling oils.
- the emulsion according to the invention is anticorrosive and does not lead to the occurrence of oxidation in the processed objects.
- Another advantage of the drilling, cutting and grinding emulsions according to the invention is that they are completely biodegradable and therefore the previously necessary collection and destruction of the used drilling oils in a flaring system is no longer necessary. Instead, used drilling emulsions can simply be discharged into the sewage systems, in which they can be processed without affecting the receiving water of sewage systems.
- Organic and / or vegetable waxes preferably from plants of the Copernicia genus with an addition of a commercially available emulsifier, preferably a nonionic, are usually processed in the process according to the invention.
- About 1 to 3 parts by weight are used per 10 to 15 parts by weight of wax.
- 41 parts by weight of a di / tri-ethanol mixture and an anticorrosive metal-wetting disinfectant with bactericidal and fungicidal properties which prevent the growth of virus types, salmonella, adhesives and other problematic bacteria are added.
- About 1 to 2% by weight of preservative of the overall formulation is preferably used.
- a lemon peel extract with skin-protecting properties can be mixed in up to 1% of the total formulation.
- This emulsion thus obtained is diluted 20 to 30 times for use as a grinding, drilling or cutting aid.
- this dilution can only be carried out using water at the place of use.
- a commercially available mixture which consists of 75 parts of di- and 25 parts of tri-ethanolamine and is in 50% aqueous solution is usually used as the di-triethanol mixture.
- the wax content of the emulsion according to the invention should be between about 10 to 15%.
- the preferred preservative is an aqueous solution of dioctylaminoethylglycine lactate and alkylaminoethylglycine hydrochloride, as sold by Goldschmidt, Essen / Ruhr, Goldschmidtstrasse under the trademark "TEGO”.
- This emulsion can be used as a concentrate for the production of cutting, drilling or grinding emulsions.
- 15 parts by weight of a wax are mixed with 80 parts by weight of a mixture consisting of 50% by weight of H 2 O, 12.5% of tri-ethanolamine and 37.5% by weight of di-ethanolamine and 0.1% by weight of a commercially available , nonionic emulsifier boiled and cooled to a temperature of 50 ° C after complete amination.
- a commercially available preservative is then added with 1% of the total mixture.
- This emulsion can be diluted 35 times with water for use as a grinding, drilling or cutting emulsion, with a pH between 8 and 9.
- An emulsion is prepared as described in Example 1, 3 parts by weight of amino soap being added to the starting mixture with stirring.
- the emulsion made with amino acid was also suitable for use as a drilling, grinding or cutting aid.
- An emulsion was prepared as described in Example 2, except that 0.5-2% by weight sodium soap was added to the starting mixture.
- An emulsion was prepared as described in Example 1 or 2, with 0.5-2% by weight potassium soap being additionally added to the starting mixture.
- Example 1 The emulsion of Example 1 was diluted 35 times with water for use as a cutting oil, this diluted emulsion having a pH of 10. A circular saw with a circular saw blade of 15 mm in diameter was used. When using the emulsion according to the invention, the separating sheet had to be replaced after 2,800 separations.
- a comparison test with a conventional cutting oil showed that the circular saw blade had to be replaced after 1,200 separations. It was also observed that the machine ran less smoothly and smoothly than when using the emulsion according to the invention as cutting oil.
- Example 2 A 3% mixture of the emulsion of Example 1, diluted 35 times with water, was used in an MSO grinding machine.
- the emulsion according to the invention is suitable as a grinding emulsion.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT82102703T ATE17594T1 (de) | 1981-04-04 | 1982-03-31 | Verfahren zum herstellen einer kuehlemulsion sowie verwendung derselben. |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3113724 | 1981-04-04 | ||
| DE3113724 | 1981-04-04 | ||
| DE3132886 | 1981-08-20 | ||
| DE3132886 | 1981-08-20 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0062292A2 true EP0062292A2 (fr) | 1982-10-13 |
| EP0062292A3 EP0062292A3 (en) | 1983-03-16 |
| EP0062292B1 EP0062292B1 (fr) | 1986-01-22 |
Family
ID=25792471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82102703A Expired EP0062292B1 (fr) | 1981-04-04 | 1982-03-31 | Procédé pour la préparation d'une émulsion de refroidissement ainsi que son application |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4440654A (fr) |
| EP (1) | EP0062292B1 (fr) |
| BR (1) | BR8201867A (fr) |
| CA (1) | CA1181735A (fr) |
| DE (1) | DE3268625D1 (fr) |
| ES (1) | ES8307283A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0141137A3 (en) * | 1983-09-09 | 1986-12-30 | Bio-Impex Meinhardt Gmbh | Use of lanolin as a drilling, grinding or cutting emulsion |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1290316C (fr) * | 1985-06-27 | 1991-10-08 | Alain Louis Pierre Lenack | Fluides aqueux |
| US4915859A (en) * | 1988-09-16 | 1990-04-10 | Nalco Chemical Company | Micro-emulsion drawing fluids for steel and aluminum |
| US5209860A (en) * | 1991-08-02 | 1993-05-11 | Nalco Chemical Company | Acrylate polymer-fatty triglyceride aqueous dispersion prelubes for all metals |
| WO2011111064A1 (fr) | 2010-03-08 | 2011-09-15 | Indian Oil Corporation Ltd. | Composition d'huile de coupe soluble, très efficace, semi-synthétique, biologiquement stable et non dangereuse pour l'utilisateur |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE20361E (en) | 1937-05-11 | Frocess of producing emulsions | ||
| US20361A (en) * | 1858-05-25 | Steaw-ctjtter | ||
| US2524017A (en) * | 1950-09-26 | Metalworking lubricant | ||
| US1948194A (en) * | 1931-11-17 | 1934-02-20 | Ironsides Company | Metal-forming lubricants |
| GB473056A (en) * | 1936-01-31 | 1937-09-30 | Robert Case Williams | Improvements in lubricating emulsions |
| US2346124A (en) * | 1939-12-08 | 1944-04-04 | Du Pont | Bullet lubrication |
| US2259466A (en) * | 1940-01-24 | 1941-10-21 | Emulsol Corp | Emulsion |
| DE1043561B (de) * | 1956-11-16 | 1958-11-13 | Stockhausen & Cie Chem Fab | Waessrige Loesungen oder Emulsionen zur spanlosen Kaltverformung von Metallen |
| DE1210296B (de) * | 1958-04-24 | 1966-02-03 | Heintz Mfg Company | Mittel und Verfahren zur Behandlung von Metallen fuer die Kaltverformung |
| US3023163A (en) * | 1959-02-18 | 1962-02-27 | Montgomery H A Co | Drawing lubricant coating composition |
| DE1266430B (de) * | 1961-04-26 | 1968-04-18 | Mobil Oil Corp | Waessriges Kuehl- und Schmiermittel fuer die spanabhebende Metallbearbeitung |
| US3354180A (en) * | 1962-06-21 | 1967-11-21 | Exxon Research Engineering Co | Method for the treatment of forms for molding concrete with wax emulsion release agent |
| SU478056A1 (ru) * | 1970-12-14 | 1975-07-25 | Опытно-Экспериментальный Завод N 20 Гражданской Авиации | Смазка дл резани металлов |
| DE2434669C3 (de) * | 1973-11-07 | 1982-03-18 | Cincinnati Milacron Inc., 45209 Cincinnati, Ohio | Schmier- und Kühlmittel und dessen Verwendung zum Ziehen und Glätten von Metallblechen |
| IT1094963B (it) * | 1978-03-31 | 1985-08-10 | C O I L Consultancy On Ind Lub | Composizione lubrificante per la lavorazione di metalli |
-
1982
- 1982-03-31 DE DE8282102703T patent/DE3268625D1/de not_active Expired
- 1982-03-31 EP EP82102703A patent/EP0062292B1/fr not_active Expired
- 1982-04-01 US US06/364,505 patent/US4440654A/en not_active Expired - Fee Related
- 1982-04-02 BR BR8201867A patent/BR8201867A/pt unknown
- 1982-04-02 ES ES511120A patent/ES8307283A1/es not_active Expired
- 1982-04-05 CA CA000400477A patent/CA1181735A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0141137A3 (en) * | 1983-09-09 | 1986-12-30 | Bio-Impex Meinhardt Gmbh | Use of lanolin as a drilling, grinding or cutting emulsion |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3268625D1 (en) | 1986-03-06 |
| ES511120A0 (es) | 1983-06-16 |
| CA1181735A (fr) | 1985-01-29 |
| US4440654A (en) | 1984-04-03 |
| BR8201867A (pt) | 1983-03-08 |
| EP0062292A3 (en) | 1983-03-16 |
| ES8307283A1 (es) | 1983-06-16 |
| EP0062292B1 (fr) | 1986-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2043885C3 (de) | Schmiermittel für die spanende und spanlose Bearbeitung von Metallwerkstoffen | |
| DE1152215B (de) | Schmiermittel fuer die spanabhebende und spanlose Bearbeitung von Metallen | |
| DE1594452A1 (de) | Kuehlmittel fuer Metallbearbeitungsvorgaenge | |
| EP0062292B1 (fr) | Procédé pour la préparation d'une émulsion de refroidissement ainsi que son application | |
| DE69327718T2 (de) | Die verwendung von zusammensetzungen auf basis von cyclodextrin und fettstoff als wässrige metallbearbeitungsflüssigkeiten | |
| DE1284018B (de) | Waessrige Metallbearbeitungsfluessigkeit | |
| DE2907863C2 (de) | Metallbearbeitungsemulsion | |
| DE2524543A1 (de) | Bakterizid wirkender zusatz fuer oel-in-wasser-emulsionen | |
| DE2046727C3 (fr) | ||
| DE1914193A1 (de) | Verfahren zur Verformung von Metalloberflaechen mit nachfolgender Reinigung | |
| CH658465A5 (de) | Kuehlschmiermittel. | |
| DE69611801T2 (de) | Heraufgeschwefelter rostfreier austenitischer Stahl mit erhöhter Bearbeitbarkeit, insbesondere zur Verwendung in maschinelle Bearbeitung mit hohe Schnittgeschwindigkeit und auf den Drehautomaten | |
| DE3815111C1 (en) | Treatment agent for vibratory grinding, and vibratory grinding process using this treatment agent | |
| EP2185671A2 (fr) | Réfrigérant lubrifiant | |
| DE310541C (fr) | ||
| DE69915747T2 (de) | Verfahren zur Behandlung von Früchten und Gemüse nach der Ernte unter Reinigung von mit primären aromatischen Aminen kontaminierten phytosänitaren Produkten | |
| DE2609666C3 (de) | Schmier- und Kühlmittel für die Metall- und Kunststoffbearbeitung | |
| DE102024103809B3 (de) | Wassermischbarer Kühlschmierstoff und anwendungsfertige Emulsion | |
| DE19610750C1 (de) | Verfahren zum Zerspanen von metallischen Werkstoffen, insbesondere von Leichtmetallen oder Leichtmetallegierungen | |
| EP0141137A2 (fr) | Utilisation de lanoline comme agent antimoussant pour des émulsions lubrificantes et refroidissantes | |
| DE3512351A1 (de) | Antikorrodierende schmiermittelzusammensetzungen zur behandlung von metallplatten | |
| EP0823494B1 (fr) | Compositions inhibiteurs ou protectrices de la corrosion contenant des amides d'acide lactobionique | |
| DE905303C (de) | OEle fuer die Metallverarbeitung | |
| DE3006921A1 (de) | Verfahren zum schmieren eines zu bearbeitenden metallischen werkstoffes und schmiermittel zur durchfuehrung des verfahrens | |
| DE2231924A1 (de) | Dorn zum lochen von rohlingen beim herstellen von rohren |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT NL SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
| 17P | Request for examination filed |
Effective date: 19830820 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: MEINHARDT, HORST |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ZIMZIK, HENRY |
|
| ITF | It: translation for a ep patent filed | ||
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
| REF | Corresponds to: |
Ref document number: 17594 Country of ref document: AT Date of ref document: 19860215 Kind code of ref document: T |
|
| REF | Corresponds to: |
Ref document number: 3268625 Country of ref document: DE Date of ref document: 19860306 |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| ITTA | It: last paid annual fee | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19890331 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19890424 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19890427 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19890428 Year of fee payment: 8 Ref country code: BE Payment date: 19890428 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19890430 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19890523 Year of fee payment: 8 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19900331 Ref country code: GB Effective date: 19900331 Ref country code: CH Effective date: 19900331 Ref country code: BE Effective date: 19900331 Ref country code: AT Effective date: 19900331 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19900401 |
|
| BERE | Be: lapsed |
Owner name: MEINHARDT HORST Effective date: 19900331 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19901001 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
| GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19901130 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19910924 Year of fee payment: 10 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19921201 |
|
| EUG | Se: european patent has lapsed |
Ref document number: 82102703.4 Effective date: 19910115 |