US3054174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making semiconductor devices
Assignee: RCA Corp
•
Filing: 1958-05-13
•
Granted: 1962-09-18
•
Expires: 1978-05-13
Abstract
No abstract record available.
Inventors
- 👤 Arnold S Rose
- 👤 Howard W Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:10
CPC Classifications
H; H10; H10W; H10W99/00; Y; Y10; Y10S; Y10S228/00; Y10S228/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2842841A
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US2820135A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |