US3141798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anodization of aluminum in a solution of calcium hydroxide
Assignee: General Electric Co
•
Filing: 1961-11-28
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Granted: 1964-07-21
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Expires: 1981-11-28
Abstract
No abstract record available.
Inventors
- 👤 Iii John R Rairden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:11
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/60; C23C22/66; C25; C25D; C25D9/00; C25D9/04; C25D9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB393565A
Cited
US2472304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |