US3216942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-type semiconducting cubic boron nitride
Assignee: General Electric Co
•
Filing: 1961-07-10
•
Granted: 1965-11-09
•
Expires: 1981-07-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert H Wentorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:56
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/583; C04B35/5831; E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/08; E04C3/09; G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/39; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/932
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |