US3419765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ohmic contact to semiconductor devices
Assignee: Texas Instruments Inc
•
Filing: 1967-06-01
•
Granted: 1968-12-31
•
Expires: 1987-06-01
Abstract
No abstract record available.
Inventors
- 👤 Jack H Clark
- 👤 James H Van Tassel
- 👤 Graydon B Larrabee
- 👤 James F Haefling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:32
CPC Classifications
H; H10; H10P; H10P95/00; H10W; H10W20/00; H10W20/40; H10W72/00; H10W72/90; H10W72/50; H10W72/531; H10W72/536; H10W72/551; H10W72/552; H10W72/5522; H10W72/59; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2973466A
Cited
US3199002A
Cited
US3241931A
Cited
US3331994A
Cited
US3290565A
Cited
US3320484A
Cited
US3290570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |