Patent US3105784A successfully refreshed from Google Patents.
US3105784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making semiconductors
Assignee: Merck and Co Inc
•
Filing: 1960-12-23
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Granted: 1963-10-01
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Topas Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:45
CPC Classifications
C; C23; C23F; C23F1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2686212A
Cited
US2916362A
Cited
DE1029941B
Cited
US2996800A
Cited
US2979024A
Cited
US2930722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |