Patent US3523832A successfully refreshed from Google Patents.
US3523832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermogenerator with germanium-silicon semiconductors
Assignee: Siemens AG
•
Filing: 1969-06-09
•
Granted: 1970-08-11
•
Expires: 1989-06-09
Abstract
No abstract record available.
Inventors
- 👤 Joachim Rupprecht
- 👤 Eugen Szabo De Bucs
- 👤 Gerhard Oesterhelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:24
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/30; H10N; H10N10/00; H10N10/10; H10N10/13; H10N10/80; H10N10/81; H10N10/817; H10P; H10P95/00; H10W40/00; H10W40/40; H10W40/47; H10W72/20; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2902392A
Cited
US3086886A
Cited
US2955145A
Cited
US3256699A
Cited
US3192065A
Cited
US3342567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |