US3446715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal treating
Assignee: Oakite Products Inc
•
Filing: 1965-04-09
•
Granted: 1969-05-27
•
Expires: 1985-04-09
Abstract
No abstract record available.
Inventors
- 👤 Samuel S Frey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:23
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/34; C23; C23G; C23G1/00; C23G1/02; C23G1/10; C25D5/00; C25D5/34; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12792
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2132439A
Cited
US2332487A
Cited
US2474526A
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US2748035A
Cited
US3096261A
Cited
US3197341A
Cited
US3202589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |