Patent US3744982A successfully refreshed from Google Patents.
US3744982A
Expired / Lapsed
US
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Method of making boron-alloyed diamond compacts and beryllium-alloyed cubic boron nitride compacts
Assignee: General Electric Co
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Filing: 1971-05-20
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Granted: 1973-07-10
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Expires: 1991-05-20
Abstract
Abstract DIAMOND COMPACT AND CUBIC BORON NITRIDE COMPACT, AND MIXTURES THEREOF, HAVING ELECTRICAL RESISTIVITY OF LESS THAN 10 OHM-CM. ARE FORMED MY MIXING FINELY DIVIDED BORON-ALLOYED SYNTHETIC DIAMOND OR CUBIC BORON NITRIDE, OR MIXTURES THEREOF, WITH ONE-HALF TO TWENTY OVERALL WEIGHT PERCENT OF TITANIUM DIBORIDE POWDER OR ZIRCONIUM DIBORIDE POWDER, OR MIXTURES THEREOF, AND SUBJECTING THE MIXTURE TO A TEMPERATURE OF AT LEAST 1300*C. IN THE CUBIC-STANLE REGION OF APPROPRIATE HEXAGONAL-CUBIC PHASE DIAGRAM.
Inventors
- 👤 H Bovenkerk
- 👤 G Malloy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:02
CPC Classifications
H; H01; H01B; H01B1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |