US2977477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductive materials for infrared transmissive components
Assignee: RCA Corp
•
Filing: 1958-05-28
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Granted: 1961-03-28
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Expires: 1978-05-28
Abstract
No abstract record available.
Inventors
- 👤 Fred D Rosi
- 👤 Braunstein Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:12
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/50; C; C30; C30B; C30B23/00; C30B29/00; C30B29/10; C30B29/40; G; G01; G01J; G01J5/00; G01J5/02; G01J5/04; G01J5/046; G01J5/08; G01J5/0875; G02; G02B; G02B1/00; G02B1/02; G02B5/00; G02B5/20; G02B5/208; H10F77/40; H10F77/407
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE40619C
Cited
US2800023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |