Patent US3145180A successfully refreshed from Google Patents.
US3145180A
Expired / Lapsed
US
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Process of cleaning metal surfaces
Assignee: Rohm and Haas Co
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Filing: 1960-04-19
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Granted: 1964-08-18
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Expires: 1980-04-19
Abstract
No abstract record available.
Inventors
- 👤 Dupre Jean
- 👤 Fred E Boettner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:01
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/14; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C09; C09B; C09B1/00; C09B1/002; C09B1/16; C09B1/20; C09B1/26; C09B1/50; C09B1/51; C11; C11D; C11D1/00; C11D1/38; C11D1/42; C11D1/44; C11D1/88; C11D1/94; C11D1/02; C11D1/12; C11D1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |