US3733691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making semiconductor devices
Assignee: KM Kabelmetal AG
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Filing: 1968-10-07
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Granted: 1973-05-22
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Expires: 1988-10-07
Abstract
Abstract A process for making semiconductor devices of the type comprising a base portion of copper or copper alloy having a threaded stem portion extending from one side of the base portion, a semiconductor element being mounted on the other side of the base portion, together with a cover member for enclosing the semiconductor element; the cover member being secured to the base portion in a manner to avoid weakening the base portion.
Inventors
- 👤 H Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:39
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/30; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |