US3475660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow cylindrical semiconductor device
Assignee: Infineon Technologies Americas Corp
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Filing: 1967-12-01
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Granted: 1969-10-28
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Expires: 1987-12-01
Abstract
No abstract record available.
Inventors
- 👤 Abraham G Coblenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:29
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/10; H10D62/117; H10W; H10W40/00; H10W40/40; H10W40/47; H10W72/00; H10W72/20; H10W72/071; H10W72/073; H10W72/07331; H10W72/30; H10W72/351; H10W72/352; H10W72/353
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH365804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |