Patent US5387776A successfully refreshed from Google Patents.
US5387776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separation of pieces from super hard material by partial laser cut and pressure cleavage
Assignee: Diamond Innovations Inc
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Filing: 1993-05-11
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Granted: 1995-02-07
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Expires: 2013-05-11
Abstract
Abstract This invention relates to a method of separating at least one piece from a super hard material plate having top and bottom surfaces, comprising providing a laser capable of cutting said super hard material plate; making a cut with said laser through the top surface of said plate, said cut defining the shape of the piece to be separated and being to a depth which is less than the overall thickness of said plate; and separating said piece from said plate by applying an effective amount of pressure to said plate along the line of said cut to separate the uncut portion of said plate adjacent said cut.
Inventors
- 👤 Tatyana L. Preiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:22
CPC Classifications
B; B28; B28D; B28D5/00; B28D5/0005; B28D5/0011; B23; B23K; B23K26/00; B23K26/36; B23K26/40; B23K2103/00; B23K2103/30; B23K2103/50; B23K2103/52
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
108 words
A method of separating at least one piece from a super hard material plate having top and bottom surfaces, comprising: providing a laser capable of cutting said super hard material plate; making a cut with said laser through the top surface of said plate, said cut defining the shape of the piece to be separated and being to a depth which is less than the overall thickness of said plate; and separating said piece from said plate by applying an effective amount of pressure to the bottom side of said plate along the line of said cut to separate the uncut portion of said plate adjacent said cut.
Claim 2
Independent Claim
108 words
A method of separating at least one piece from a super hard material plate having top and bottom surfaces, comprising: providing a laser capable of cutting said super hard material plate; making a cut with said laser through the top surface of said plate, said cut defining the shape of the piece to be separated and being to a depth which is less than the overall thickness of said plate; and separating said piece from said plate by applying an effective amount of pressure to the bottom side of said plate along the line of said cut to separate the uncut portion of said plate adjacent said cut.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said super hard material is a CVD diamond plate.
Claim 4
Dependent Claim
13 words
The method of claim 2 wherein said piece is a CVD diamond device.
Claim 5
Dependent Claim
14 words
The method of claim 3 wherein said CVD diamond device is a heat sink.
Claim 6
Dependent Claim
14 words
The method of claim 3 wherein said CVD diamond device is a tool blank.
Claim 7
Independent Claim
118 words
A method of separating at least one piece from a super hard material plate having top and bottom surfaces, comprising: providing a laser capable of cutting said super hard material plate; making a cut with said laser through the top surface of said plate, said cut defining the shape of the piece to be separated and being to a depth which is less than the overall thickness of said plate said cut made to a depth of about two-thirds of the overall plate thickness; and separating said piece from said plate by applying an effective amount of pressure to said plate along the line of said cut to separate the uncut portion of said plate adjacent said cut.
Claim 8
Independent Claim
118 words
A method of separating at least one piece from a super hard material plate having top and bottom surfaces, comprising: providing a laser capable of cutting said super hard material plate; making a cut with said laser through the top surface of said plate, said cut defining the shape of the piece to be separated and being to a depth which is less than the overall thickness of said plate said cut made to a depth of about two-thirds of the overall plate thickness; and separating said piece from said plate by applying an effective amount of pressure to said plate along the line of said cut to separate the uncut portion of said plate adjacent said cut.
Claim 9
Independent Claim
117 words
A method of making a CVD diamond device comprising: providing a CVD diamond plate having top and bottom surfaces; forming the pattern of said diamond device on said plate; providing a laser capable of cutting said plate; making a cut with said laser through the top surface of said plate, said cut defining the shape of said device and being to a depth which is less than the overall thickness of said plate; cleaning said plate for final separation; and separating said device from said plate by applying an effective amount of pressure to the bottom surface of said plate along the line of said cut to separate the uncut portion of said plate adjacent said cut.
Claim 10
Independent Claim
117 words
A method of making a CVD diamond device comprising: providing a CVD diamond plate having top and bottom surfaces; forming the pattern of said diamond device on said plate; providing a laser capable of cutting said plate; making a cut with said laser through the top surface of said plate, said cut defining the shape of said device and being to a depth which is less than the overall thickness of said plate; cleaning said plate for final separation; and separating said device from said plate by applying an effective amount of pressure to the bottom surface of said plate along the line of said cut to separate the uncut portion of said plate adjacent said cut.
Claim 11
Dependent Claim
20 words
The method of claim 7 wherein the cut is made to a depth of about two-thirds of the plate thickness.
Claim 12
Dependent Claim
14 words
The method of claim 7 wherein said device is a CVD diamond heat sink.
Claim 13
Dependent Claim
14 words
The method of claim 7 wherein said device is a CVD diamond tool blank.
References Cited (Backward Citations)
US3629545A
Cited
US3612814A
Cited
US4169976A
Cited
US4224101A
Cited
US4191938A
Cited
US4248369A
Cited
US4401876A
Cited
US4336439A
Cited
US4467168A
Cited
US4467172A
Cited
US4970368A
Cited
US4625093A
Cited
US4682003A
Cited
US5012067A
Cited
US5168143A
Cited
US5138130A
Cited
US5138131A
Cited
US5132505A
Cited
US5149938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-06 | 1998-08-08 | 1999-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-06 | 2002-08-08 | 2003-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-06 | 2006-08-08 | 2007-02-07 | $7700.00 | Window Closed / Lapsed |