US2945286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion transistor and method of making it
Assignee: Siemens and Halske AG
•
Filing: 1957-07-10
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Granted: 1960-07-19
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Expires: 1977-07-10
Abstract
No abstract record available.
Inventors
- 👤 Dorendorf Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:19
CPC Classifications
H; H10; H10D; H10D10/00; C; C23; C23F; C23F1/00; C23F1/02; C30; C30B; C30B31/00; C30B31/06; H10D62/00; H10D62/10; H10D99/00; H10P; H10P10/00; H10P14/00; H10P14/60; H10P14/69; H10P14/694; H10P14/6943; H10P14/69433; H10P50/00; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2666814A
Cited
US2848665A
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US2821493A
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US2817798A
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US2813233A
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US2829075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |