WO1993015131A3 - Curable resin systems and applications thereof - Google Patents

Curable resin systems and applications thereof Download PDF

Info

Publication number
WO1993015131A3
WO1993015131A3 PCT/GB1993/000107 GB9300107W WO9315131A3 WO 1993015131 A3 WO1993015131 A3 WO 1993015131A3 GB 9300107 W GB9300107 W GB 9300107W WO 9315131 A3 WO9315131 A3 WO 9315131A3
Authority
WO
WIPO (PCT)
Prior art keywords
resin
radiation
replacement pipe
pipe
catalyst
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.)
Ceased
Application number
PCT/GB1993/000107
Other languages
French (fr)
Other versions
WO1993015131A2 (en
Inventor
Brian Burnett Chandler
David Campbell Mitchell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from EP92810029A external-priority patent/EP0551790A1/en
Application filed by Individual filed Critical Individual
Priority to EP93902407A priority Critical patent/EP0621883A1/en
Publication of WO1993015131A2 publication Critical patent/WO1993015131A2/en
Publication of WO1993015131A3 publication Critical patent/WO1993015131A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • B29C67/247—Moulding polymers or prepolymers containing ingredients in a frangible packaging, e.g. microcapsules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0272—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using lost heating elements, i.e. heating means incorporated and remaining in the formed article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0065—Heat treatment
    • B29C63/0069—Heat treatment of tubular articles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C08J3/241—Preventing premature crosslinking by physical separation of components, e.g. encapsulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1656—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section materials for flexible liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0261—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using ultrasonic or sonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Toxicology (AREA)
  • Analytical Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A method of producing resin articles from a resin reaction system including an uncured resin material and added radiation activatable matter therein. In one case said matter is microencapsulated catayst and, upon application of ultrasonic energy the catalyst is released to initiate cure of the resin. The catalyst is one which is water insoluble and encapsulated with gelatin. In another case, radiation reactive particles such as iron oxide particles are incorporated in the resin and are caused to heat by application of an alternating magnetic field to cure the resin. The field is generated by annular electromagnetic means (14X) borne by a core member (10X) drawn by a cable (12X) through the pipe (1X) and tube (2X). The process is particularly well suited to a replacement pipe and method of installing the replacement pipe within an existing conduit with the resin being cured by passing appropriate radiation generator through a fluid inside the inflated replacement pipe. The invention is of particular interest in mending leaky sewer pipes and the like as the presence of flowing liquid or the like does not affect the radiation.
PCT/GB1993/000107 1992-01-17 1993-01-18 Curable resin systems and applications thereof Ceased WO1993015131A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93902407A EP0621883A1 (en) 1992-01-17 1993-01-18 Curable resin systems and applications thereof

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP92810029.6 1992-01-17
EP92810029A EP0551790A1 (en) 1992-01-17 1992-01-17 A method of curing a heat curable substance contained in a pipe liner and apparatus and pipe liner for carrying out this method
US83468392A 1992-02-11 1992-02-11
US07/834,683 1992-02-11
US99097292A 1992-12-15 1992-12-15
US07/990,972 1992-12-15

Publications (2)

Publication Number Publication Date
WO1993015131A2 WO1993015131A2 (en) 1993-08-05
WO1993015131A3 true WO1993015131A3 (en) 1993-12-09

Family

ID=27234884

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/000107 Ceased WO1993015131A2 (en) 1992-01-17 1993-01-18 Curable resin systems and applications thereof

Country Status (2)

Country Link
AU (1) AU3359893A (en)
WO (1) WO1993015131A2 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2039654C1 (en) * 1993-12-30 1995-07-20 Московское муниципальное предприятие "Мосводоканал" Covering of the pipeline inner surface and method of applying this covering on the pipeline inner surface
AU2627395A (en) * 1994-10-14 1996-05-06 Sound Pipe Limited Methods for and machines for use in the lining of pipelines and passageways
DK0825921T3 (en) * 1995-05-18 2000-01-03 Sound Pipe Ltd Methods for manufacturing tubular structures and tubular structures made by means of progress
GB9807449D0 (en) * 1998-04-08 1998-06-10 Advanced Composites Group Ltd Improved moulding method
GB9812968D0 (en) * 1998-06-17 1998-08-12 Chandler Brian B Improvements relating to lining methods and materials
US7104317B2 (en) 2002-12-04 2006-09-12 Baker Hughes Incorporated Expandable composition tubulars
GB2411922B (en) 2002-12-04 2006-10-04 Baker Hughes Inc Expandable composite tubulars
EP1959183A1 (en) * 2007-02-19 2008-08-20 Per Aarsleff A/S An apparatus and a method for curing a liner of a pipeline
US8206545B2 (en) * 2008-11-13 2012-06-26 Lord Corporation Magnetically curable composition and magnetic cure process
US8048360B2 (en) * 2009-03-25 2011-11-01 The Boeing Company Method for curing resin with ultrasound
WO2012148629A1 (en) 2011-03-31 2012-11-01 Ocv Intellectual Capital, Llc Microencapsulated curing agent
DE102011113264A1 (en) * 2011-09-13 2013-03-14 Sml Verwaltungs Gmbh Lining hose for the refurbishment of fluid-carrying piping systems
BR112014013655A2 (en) 2011-12-08 2017-06-13 Ocv Intellectual Capital Llc fiber reinforced resin molding compound and manufacturing method for reinforced resin molded article
US10221315B2 (en) * 2013-11-08 2019-03-05 Ppg Industries Ohio, Inc. Curable film-forming composition comprising catalyst associated with a carrier
US20150132592A1 (en) 2013-11-08 2015-05-14 Ppg Industries Ohio, Inc. Curable film-forming compositions comprising catalyst associated with a carrier and methods for coating a substrate
US11585188B2 (en) 2014-11-17 2023-02-21 Terves, Llc In situ expandable tubulars
US10584564B2 (en) 2014-11-17 2020-03-10 Terves, Llc In situ expandable tubulars
DE102014118689A1 (en) 2014-12-15 2016-06-16 Sml Verwaltungs Gmbh Lining hose for refurbishment of fluid-carrying systems
EP3321554B1 (en) 2016-10-18 2020-04-01 Bolonia Servicios e Ingenieros, S.L. A device for curing inner lining of a pipeline
DK3336404T3 (en) 2016-12-14 2020-01-13 Bolonia Servicios E Ingenieros S L DEVICE TO CURE INTERNAL ART RESIN PIPE LINES
DK3345740T3 (en) 2017-01-09 2019-07-29 Bolonia Servicios E Ingenieros S L DEVICE FOR CURRENCY OF INTERNAL RESIN PIPE LINES
CA2961899A1 (en) 2017-02-10 2018-08-10 Trelleborg Pipe Seals Duisburg Gmbh Resin system for impregnating a liner element for rehabilitating a pipeline, method for lining a pipeline and a rehabilitation device
US11118716B2 (en) 2017-03-03 2021-09-14 Ina Acquisition Corp. Curing device for curing a pipe liner
US11173634B2 (en) 2018-02-01 2021-11-16 Ina Acquisition Corp Electromagnetic radiation curable pipe liner and method of making and installing the same
DK3543584T3 (en) 2018-03-20 2021-05-10 Sewertronics S L DEVICE FOR HARDENING INTERIOR RESIN COATS OF PIPELINES
US10704728B2 (en) 2018-03-20 2020-07-07 Ina Acquisition Corp. Pipe liner and method of making same
EP3795880A1 (en) 2019-09-17 2021-03-24 Sewertronics Sp. z o.o. A device for curing pipeline inner resin linings
AU2020383413A1 (en) 2019-11-11 2022-05-19 The Charles Machine Works, Inc. System and method for repairing an underground pipeline
SI26192A (en) 2021-05-28 2022-11-30 TECHRA d.o.o Device for quick hardening of tubular insert impregnated with artificial resin in the process of repair of pipelines
CN115596925B (en) * 2021-07-09 2026-04-17 中国石油化工股份有限公司 A method for online repair of flexible composite pipes
US12439493B2 (en) 2023-02-10 2025-10-07 The Charles Machine Works, Inc. Dynamic temperature regulation system for a light head

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618599A (en) * 1969-08-04 1971-11-09 Merck & Co Inc Orthopedic device having a resin curable by ultrasonic energy
EP0224382A2 (en) * 1985-11-21 1987-06-03 LOCTITE (IRELAND) Ltd. Method of activating chemical compositions
CA1237970A (en) * 1982-08-11 1988-06-14 Charles R. Morgan Heat activatable adhesive or sealant compositions containing encapsulants and process therefor
EP0292703A2 (en) * 1987-04-28 1988-11-30 Ametex Ag Process and device for laying plastic pipes
CH676029A5 (en) * 1986-12-30 1990-11-30 I & C Investment And Controlin Reconstruction of damaged underground pipelines - three layer tube with transparent inner and outer layers and central curable layer is hauled into pipe, inflated and cured by light source

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618599A (en) * 1969-08-04 1971-11-09 Merck & Co Inc Orthopedic device having a resin curable by ultrasonic energy
CA1237970A (en) * 1982-08-11 1988-06-14 Charles R. Morgan Heat activatable adhesive or sealant compositions containing encapsulants and process therefor
EP0224382A2 (en) * 1985-11-21 1987-06-03 LOCTITE (IRELAND) Ltd. Method of activating chemical compositions
CH676029A5 (en) * 1986-12-30 1990-11-30 I & C Investment And Controlin Reconstruction of damaged underground pipelines - three layer tube with transparent inner and outer layers and central curable layer is hauled into pipe, inflated and cured by light source
EP0292703A2 (en) * 1987-04-28 1988-11-30 Ametex Ag Process and device for laying plastic pipes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 115, no. 18, 4 November 1991, Columbus, Ohio, US; abstract no. 184682w, *

Also Published As

Publication number Publication date
WO1993015131A2 (en) 1993-08-05
AU3359893A (en) 1993-09-01

Similar Documents

Publication Publication Date Title
WO1993015131A3 (en) Curable resin systems and applications thereof
JP2589441B2 (en) Pipe line lining method
US5634743A (en) Lining of pipelines and passageways
AUPP065297A0 (en) System for formed-in-situ localised repair of pipes and conduits
FI76201B (en) FOERFARANDE OCH ANORDNING FOER INFODRING AV ROERLEDNINGAR MED HJAELP AV EN BOEJLIG SLANG INNEHAOLLANDE EN HAERDBAR PLAST.
CN102649317A (en) Thermocuring process for CIPP (Cured In Place Pipe) pull-in method lining repair
US5937910A (en) Linings for pipelines and passageways
US7810523B2 (en) Duct seepage reduction
CA2294605A1 (en) System for inspecting in-service gas distribution mains
EP0551790A1 (en) A method of curing a heat curable substance contained in a pipe liner and apparatus and pipe liner for carrying out this method
US5438181A (en) Apparatus for heating substrate having electrically-conductive and non-electrically-conductive portions
WO1992020504A1 (en) Ultrasonically cured replacement pipe and method of installation
EP0707531B1 (en) Applying linings to pipelines and passageways
EP0621883A1 (en) Curable resin systems and applications thereof
WO1998051960A1 (en) Improvements relating to curing of synthetic resin systems, for example, in the lining of pipelines and passageways
ATE169263T1 (en) IMPROVEMENTS TO THE LINING OF PIPES AND PASSAGES
US6106236A (en) Fluid conduit
AU2022242706A1 (en) Lining hose, curing device, system, and method for renovating conduits without using trenches
CN109412288B (en) A motor with non-metal rotor structure and its application in pipeline
US20080178466A1 (en) Flame treatment process for bonded foam piping systems
WO2023041156A1 (en) Method for cured-in-pipe rehabilitation of a sewer line or pipe line
DE69104360D1 (en) METHOD AND DEVICE FOR ATTACHING AN INNER PIPE IN AN EXISTING PIPELINE.
WO2023126712A1 (en) Duct and related production method
JPH03208524A (en) Multifold pipe separating method
Wells Service lateral reconstruction in the Isle of Man

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AT AU BB BG BR CA CH DE DK ES FI GB HU JP KP KR LK LU MG MN MW NL NO NZ PL RO RU SD SE US

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AT AU BB BG BR CA CH DE DK ES FI GB HU JP KP KR LK LU MG MN MW NL NO NZ PL RO RU SD SE US

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 1993902407

Country of ref document: EP

ENP Entry into the national phase

Ref country code: US

Ref document number: 1994 256635

Date of ref document: 19941011

Kind code of ref document: A

Format of ref document f/p: F

WWP Wipo information: published in national office

Ref document number: 1993902407

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA

WWW Wipo information: withdrawn in national office

Ref document number: 1993902407

Country of ref document: EP