US3743489A
Expired / Lapsed
US
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Abrasive bodies of finely-divided cubic boron nitride crystals
Assignee: General Electric Co
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Filing: 1971-07-01
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Granted: 1973-07-03
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Expires: 1991-07-01
Abstract
Abstract ALUMINUM ALLOYS OF NICKEL, COBALT, MANGANESE, IRON, VANADIUM AND CHROMIUM HAVE BEEN FOUND TO PROVIDE SUCCESSFUL BONDING MECHANISMS FOR THE PREPARATION OF CUBIC BORON NITRIDE (CBN) COMPACTS. THESE BONDING MEDIA ARE PARTICULARLY EFFECTIVE FOR PREPARING COMPACTS OF CBN CRYSTALS SMALLER THAN ABOUT 30 MICROMETERS IN LARGEST DIMENSION. THE PREPARATION OF TOOL INSERTS MADE OF CUBICBORON NITRIDE CRYSTALS BONDED TO AND SUPPORTED ON A SINTERED CARBIDE MASS IS DESCRIBED WHEREIN SUCH AN ALUMINUM ALLOY IS USED AS THE BONDING MEDIUM.
Inventors
- 👤 R Wentorf
- 👤 W Rocco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:29
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/148; B23P; B23P15/00; B23P15/28; B23P15/30; C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/583; C04B35/5831; B22; B22F; B22F2998/00
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |