US3525650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a water-insoluble germanium oxide coating at the surface of a germanium crystal
Assignee: Siemens AG
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Filing: 1966-12-05
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Granted: 1970-08-25
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Expires: 1986-12-05
Abstract
No abstract record available.
Inventors
- 👤 Erich Pammer
- 👤 Dieter Maly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:04
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306; H10P14/6312; C; C23; C23C; C23C22/00; C23C22/02; C23C22/05; C23C22/68; H10P14/6322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3340163A
Cited
US3401054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |