Patent US1989774A successfully refreshed from Google Patents.
US2382818A
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Corrosion prevention
Assignee: Standard Oil Co
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Filing: 1942-12-21
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Granted: 1945-08-14
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Expires: 1962-12-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert D Rhodes
- 👤 Rogert W Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:13
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/147; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/025; C10M2207/10; C10M2207/16; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/24; C10M2215/26; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/135; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-08-13 | 1949-02-12 | 1949-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-13 | 1953-02-12 | 1953-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-13 | 1957-02-12 | 1957-08-14 | $7700.00 | Window Closed / Lapsed |