Patent US3423255A successfully refreshed from Google Patents.
US3423255A
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Semiconductor integrated circuits and method of making the same
Assignee: Westinghouse Electric Corp
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Filing: 1965-03-31
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Granted: 1969-01-21
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Expires: 1985-03-31
Abstract
No abstract record available.
Inventors
- 👤 Benjamin D Joyce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:43
CPC Classifications
H; H10; H10P; H10P95/00; H10P14/00; H10P14/60; H10P14/63; H10P14/6326; H10P14/6328; H10P14/6334; H10P14/66; H10P14/668; H10P14/6681; H10P14/6682; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215; H10W; H10W10/00; H10W10/01; H10W10/011; H10W10/019; H10W10/10; H10W74/00; H10W74/40; H10W74/43; Y; Y10; Y10S; Y10S148/00; Y10S148/085; Y10S438/00; Y10S438/928; Y10S438/977
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3158788A
Cited
US3200311A
Cited
US3296040A
Cited
US3300832A
Cited
US3290753A
Cited
US3332137A
Cited
US3332143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |