US2850688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor circuit elements
Assignee: International Business Machines Corp
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Filing: 1956-02-08
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Granted: 1958-09-02
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Expires: 1976-02-08
Abstract
No abstract record available.
Inventors
- 👤 Gene A Silvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:29
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/80; C; C01; C01B; C01B33/00; C01B33/02; C01G; C01G9/00; H10D99/00; H10F; H10F71/00; H10P; H10P10/00; H10P14/00; H10P14/20; H10P14/34; H10P14/3402; H10P95/00; H10P95/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A SEMCONDUCTOR DEVICE COMPRISING A BODY AND A PLURALITY OF CONTACTS TO SAID BODY, WHEREIN SAID BODY COMPRISES ZINC ARSENIDE (ZN3AS2) AS A MAJOR CONSTITUENT IN A CONCENTRATION OF GREATER THAN 99 PERCENT, SAID BODY HAVING A MINOR CONSTITUENT OF AT LEAST ONE CONDUCTIVITY DIRECTING IMPURITY IN A CONCENTRATION LESS THAN ONE PERCENT.
Claim 2
Dependent Claim
53 words
A SEMCONDUCTOR DEVICE COMPRISING A BODY AND A PLURALITY OF CONTACTS TO SAID BODY, WHEREIN SAID BODY COMPRISES ZINC ARSENIDE (ZN3AS2) AS A MAJOR CONSTITUENT IN A CONCENTRATION OF GREATER THAN 99 PERCENT, SAID BODY HAVING A MINOR CONSTITUENT OF AT LEAST ONE CONDUCTIVITY DIRECTING IMPURITY IN A CONCENTRATION LESS THAN ONE PERCENT.
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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |