US3379580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heat treating and forming an aluminum sheet
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1965-09-20
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Granted: 1968-04-23
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Expires: 1985-09-20
Abstract
No abstract record available.
Inventors
- 👤 Paul P Zeigler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:13
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/06; C22C21/08; C22F; C22F1/00; C22F1/04; C22F1/047; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE26216E
Cited
US2814576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |