Patent USRE27879E successfully refreshed from Google Patents.
USRE27879E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ohmic contact for group iii-v p-type semiconductors
Assignee: —
•
Filing: 1973-02-21
•
Granted: 1974-01-08
•
Expires: 1993-02-21
Abstract
Abstract A COMBINATION OF GOLD-GERMANIUM OR GOLD-SILICON ALLOY AND ZINC OR OTHER METALLIC GROUP II ELEMENT PROVIDES AN ELECTRICAL CONTACT AND LOW-TEMPERATURE BONDING MATERIAL FOR P-TYPE SEMICONDUCTORS OF GROUP III-V SUCH AS GALLIUM ARSENIDE.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:03
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/83; H10D; H10D64/00; H10D64/01; H10D64/011; H10D64/0116
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |