US3526814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sink arrangement for a semiconductor device
Assignee: TDK Micronas GmbH
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Filing: 1968-04-03
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Granted: 1970-09-01
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Expires: 1988-04-03
Abstract
No abstract record available.
Inventors
- 👤 Amaury Piedra
- 👤 Henry J Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:17
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/30; H10W40/00; H10W40/20; H10W40/25; H10W40/257; H10W40/70; H10W40/77; H10W40/778; H10W99/00; H10W72/071; H10W72/073; H10W72/07331; H10W72/07337
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) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |