Patent US3429662A successfully refreshed from Google Patents.
US3429662A
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Zinc oxide
Assignee: American Zinc Co
•
Filing: 1965-03-15
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Granted: 1969-02-25
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Otto C Klein
- 👤 Gilbert E Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:37
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; C; C01; C01G; C01G9/00; C01G9/02; C09; C09C; C09C1/00; C09C1/04; C09C1/043; C01P; C01P2004/00; C01P2004/50; C01P2004/51; C01P2004/60; C01P2004/62; C01P2006/00; C01P2006/10; C01P2006/60; C01P2006/90; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |