US5012067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond cutting method
Assignee: OSAKA KONGO SEITO Co Ltd A CORP OF JAPAN
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Filing: 1989-10-20
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Granted: 1991-04-30
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Expires: 2009-10-20
Abstract
Abstract A method of machining a diamond workpiece by a laser beam in which a metallic membrane or layer is formed on at least one surface of the workpiece before the workpiece is subjected to the machining operation. The metallic membrane or layer is preferably formed on both side surfaces of a plate-like diamond workpiece. The workpiece machined according to the present invention has a good appearance without cracks and splinters, and a smooth cut surface.
Inventors
- 👤 Junichi Sato
- 👤 Minoru Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:59
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/22; B28D1/221; B23; B23K; B23K26/00; B23K26/18; B23K26/36; B23K26/40; B23K2101/00; B23K2101/34; B23K2101/35; B23K2103/00; B23K2103/16; B23K2103/166; B23K2103/172; B23K2103/30; B23K2103/50; B23K2103/52
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
33 words
A method of processing a diamond workpiece, comprising forming a metallic membrane or layer on at least one surface of the diamond workpiece and then machining the diamond workpiece with a laser beam.
Claim 2
Independent Claim
33 words
A method of processing a diamond workpiece, comprising forming a metallic membrane or layer on at least one surface of the diamond workpiece and then machining the diamond workpiece with a laser beam.
Claim 3
Independent Claim
43 words
A method of processing a diamond workpiece, wherein the diamond workpiece is a thin plate and the method comprises forming a metallic membrane or layer on both side surfaces of the diamond workpiece and then machining the diamond workpiece with a laser beam.
Claim 4
Independent Claim
43 words
A method of processing a diamond workpiece, wherein the diamond workpiece is a thin plate and the method comprises forming a metallic membrane or layer on both side surfaces of the diamond workpiece and then machining the diamond workpiece with a laser beam.
Claim 5
Dependent Claim
28 words
A method as defined in claim 2, wherein the method comprises forming the metallic membrane or layer on the surface of the workpiece by a vacuum evaporation process.
Claim 6
Dependent Claim
29 words
A method as defined in claim 3, wherein the metallic membrane or layer comprises a metal selected from the group consisting of Au, Cu, Cr, Si, Ti, and Al.
Claim 7
Dependent Claim
30 words
A method as defined in claim 2, wherein the method comprises separately forming the metallic membrane or layer as a foil and later firmly adhering the foil to the workpiece.
Claim 8
Dependent Claim
30 words
A method as defined in claim 5, wherein the metallic membrane or layer comprises a metal selected from the group consisting of Au, Ag, Sn, Al, Cu, Fe and Cr.
Claim 9
Independent Claim
55 words
A method of processing a diamond workpiece, comprising forming a metallic membrane or layer on at least one surface of the diamond workpiece and then machining the diamond workpiece with a laser beam, wherein the method further comprises forming the metallic membrane or layer on the surface of the workpiece by a vacuum evaporation process.
Claim 10
Independent Claim
55 words
A method of processing a diamond workpiece, comprising forming a metallic membrane or layer on at least one surface of the diamond workpiece and then machining the diamond workpiece with a laser beam, wherein the method further comprises forming the metallic membrane or layer on the surface of the workpiece by a vacuum evaporation process.
Claim 11
Dependent Claim
29 words
A method as defined in claim 7, wherein the metallic membrane or layer comprises a metal selected from the group consisting of Au, Cu, Cr, Si, Ti and Al.
Claim 12
Independent Claim
57 words
A method of processing a diamond workpiece, comprising forming a metallic membrane or layer on at least one surface of the diamond workpiece and then machining the diamond workpiece with a laser beam, wherein the method further comprises separately forming the metallic membrane or layer as a foil and later firmly adhering the foil to the workpiece.
Claim 13
Independent Claim
57 words
A method of processing a diamond workpiece, comprising forming a metallic membrane or layer on at least one surface of the diamond workpiece and then machining the diamond workpiece with a laser beam, wherein the method further comprises separately forming the metallic membrane or layer as a foil and later firmly adhering the foil to the workpiece.
Claim 14
Dependent Claim
30 words
A method as defined in claim 9, wherein the metallic membrane or layer comprises a metal selected from the group consisting of Au, Ag, Sn, Al, Cu, Fe and Cr.
Claim 15
Independent Claim
24 words
A method as defined in any of claims 1-6 or 7-10, wherein the diamond workpiece is an artificial diamond obtained by a CVD method.
Claim 16
Independent Claim
25 words
A method as defined in any of claims 1-6 or 7-10, wherein the metallic membrane or layer has a thickness of more than 30 Å.
Claim 17
Dependent Claim
15 words
A method as defined in claim 12, wherein the thickness is more than 100 Å.
Claim 18
Independent Claim
33 words
A method as defined in any of claims 1-6 or 7-10, wherein the method comprises laminating a plurality of different kinds of metallic layers together to form an integral single membrane or layer.
Claim 19
Independent Claim
24 words
A method as defined in any of claims 1-6 or 7-10, wherein the laser beam is from a solid laser or a gas laser.
Claim 20
Dependent Claim
38 words
A method as defined in claim 15, wherein said solid laser is a ruby laser, a YAG laser or a a glass laser and said gas laser is a carbon dioxide gas laser or an Ar gas laser.
Claim 21
Independent Claim
35 words
A method as defined in any of claims 1-6 or 7-10, wherein the method comprises forming the diamond workpiece by laminating a plurality of diamond thin plates with solder between each set of adjacent plates.
References Cited (Backward Citations)
US4476375A
Cited
US4546231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |