US3553538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure contact semiconductor device
Assignee: CKD Praha DIZ AS
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Filing: 1968-11-12
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Granted: 1971-01-05
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Expires: 1988-11-12
Abstract
Abstract IN THE SEMICONDUCTOR ASSEMBLIES, A PLATE SHAPED SEMICONDUCTOR ELEMENT INTERPOSED BETWEEN THE CONTACT FACES OF TWO ELECTRODES, A FIRST AND SECOND FRAME MEMBER FIXED TO THE OUTER SURFACE OF EACH OF THE ELECTRODES RESPECTIVELY, THE FRAME MEMBERS EACH BEING PROVIDED WITH CIRCUMFERENTIAL CYLINDRICAL MEMBERS ADAPTED TO TELESCOPINGLY FIT, ONE WITHIN THE OTHER, TO RETAIN THE ASSEMBLY THEREIN.
Inventors
- 👤 Vlastimil Bezouska
- 👤 Jan Pivrnec
- 👤 Jiri Hrdlicka
- 👤 Evzen Krasa
- 👤 Zdenek Smekal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:52
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |