EP0352093A3 - Découpage abrasif de pierres ultradures - Google Patents

Découpage abrasif de pierres ultradures Download PDF

Info

Publication number: EP0352093A3
Authority: EP; European Patent Office
Prior art keywords: abrading; ultra; stone; hard stones; diamond compact
Prior art date: 1988-07-20
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

Application number

EP19890307317

Other languages

German (de)

English (en)

Other versions

EP0352093B1 (fr

EP0352093A2 (fr

Inventor

Robert Charles Burns

Charlie Maurice Levitt

Gabriel Shraga Tolkowsky

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.)

De Beers Industrial Diamond Division Pty Ltd

Original Assignee

De Beers Industrial Diamond Division Pty Ltd

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.)

1988-07-20

Filing date

1989-07-19

Publication date

1991-04-24

1989-07-19 Application filed by De Beers Industrial Diamond Division Pty Ltd filed Critical De Beers Industrial Diamond Division Pty Ltd

1990-01-24 Publication of EP0352093A2 publication Critical patent/EP0352093A2/fr

1991-04-24 Publication of EP0352093A3 publication Critical patent/EP0352093A3/fr

1995-01-25 Application granted granted Critical

1995-01-25 Publication of EP0352093B1 publication Critical patent/EP0352093B1/fr

2009-07-19 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

239000004575 stone Substances 0.000 title abstract 3
239000010432 diamond Substances 0.000 abstract 4
229910003460 diamond Inorganic materials 0.000 abstract 4
239000010437 gem Substances 0.000 abstract 1
229910001751 gemstone Inorganic materials 0.000 abstract 1

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/02—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by rotary tools, e.g. drills
- B28D5/022—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by rotary tools, e.g. drills by cutting with discs or wheels
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Processing Of Stones Or Stones Resemblance Materials (AREA)
Crystals, And After-Treatments Of Crystals (AREA)

EP89307317A 1988-07-20 1989-07-19 Découpage abrasif de pierres ultradures Expired - Lifetime EP0352093B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
ZA885245		1988-07-20
ZA885245		1988-07-20

Publications (3)

Publication Number	Publication Date
EP0352093A2 EP0352093A2 (fr)	1990-01-24
EP0352093A3 true EP0352093A3 (fr)	1991-04-24
EP0352093B1 EP0352093B1 (fr)	1995-01-25

Family

ID=25579341

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP89307317A Expired - Lifetime EP0352093B1 (fr)	1988-07-20	1989-07-19	Découpage abrasif de pierres ultradures

Country Status (2)

Country	Link
EP (1)	EP0352093B1 (fr)
IL (1)	IL90976A0 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SU526640A1 (ru) *	1974-07-30	1976-08-30	5-й Государственный подшипниковый завод	Композици дл пропитки абразивных кругов из эльбора
GB2078572A (en) *	1980-06-25	1982-01-13	Gersan Ets	Kerving
EP0114497A2 (fr) *	1982-12-21	1984-08-01	De Beers Industrial Diamond Division (Proprietary) Limited	Eléments abrasifs comprimés et procédé pour leur fabrication
EP0208414A2 (fr) *	1985-06-07	1987-01-14	De Beers Industrial Diamond Division (Proprietary) Limited	Corps compact et abrasif en diamant thermiquement stable
US4643741A (en) *	1984-12-14	1987-02-17	Hongchang Yu	Thermostable polycrystalline diamond body, method and mold for producing same
WO1988007409A1 (fr) *	1987-03-23	1988-10-06	The Australian National University	Agglomeres de diamant

1989
- 1989-07-14 IL IL90976A patent/IL90976A0/xx unknown
- 1989-07-19 EP EP89307317A patent/EP0352093B1/fr not_active Expired - Lifetime

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SU526640A1 (ru) *	1974-07-30	1976-08-30	5-й Государственный подшипниковый завод	Композици дл пропитки абразивных кругов из эльбора
GB2078572A (en) *	1980-06-25	1982-01-13	Gersan Ets	Kerving
EP0114497A2 (fr) *	1982-12-21	1984-08-01	De Beers Industrial Diamond Division (Proprietary) Limited	Eléments abrasifs comprimés et procédé pour leur fabrication
US4643741A (en) *	1984-12-14	1987-02-17	Hongchang Yu	Thermostable polycrystalline diamond body, method and mold for producing same
EP0208414A2 (fr) *	1985-06-07	1987-01-14	De Beers Industrial Diamond Division (Proprietary) Limited	Corps compact et abrasif en diamant thermiquement stable
WO1988007409A1 (fr) *	1987-03-23	1988-10-06	The Australian National University	Agglomeres de diamant

Also Published As

Publication number	Publication date
IL90976A0 (en)	1990-02-09
EP0352093B1 (fr)	1995-01-25
EP0352093A2 (fr)	1990-01-24

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Legal Events

Date	Code	Title	Description
1989-12-09	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
1990-01-24	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): BE GB NL
1991-03-08	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1991-04-24	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): BE GB NL
1991-11-27	17P	Request for examination filed	Effective date: 19911001
1992-06-17	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY)
1992-07-29	17Q	First examination report despatched	Effective date: 19920617
1994-12-09	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-01-25	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE GB NL
1995-07-19	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19950719
1995-07-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19950731
1995-11-25	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-11-25	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1996-01-17	26N	No opposition filed
1996-01-31	BERE	Be: lapsed	Owner name: DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY Effective date: 19950731
1996-02-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19960201
1996-03-20	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19950719
1996-04-01	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee	Effective date: 19960201