US3344071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High resistivity chromium doped gallium arsenide and process of making same
Assignee: Texas Instruments Inc
•
Filing: 1963-09-25
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Granted: 1967-09-26
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Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 George R Cronin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:47
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/02; C22; C22C; C22C1/00; C22C1/007; C30B29/00; C30B29/10; C30B29/40; C30B29/42; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A GALLIUM ARSENIDE CRYSTALLINE MATERIAL HAVING A DOMINANT ELECTRICALLY ACTIVE IMPURITY CONSISTING OF CHROMIUM BEING PRESENT IN AT LEAST ABOUT .2 PART PER MILLION.
Claim 2
Dependent Claim
24 words
A GALLIUM ARSENIDE CRYSTALLINE MATERIAL HAVING A DOMINANT ELECTRICALLY ACTIVE IMPURITY CONSISTING OF CHROMIUM BEING PRESENT IN AT LEAST ABOUT .2 PART PER MILLION.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |