US2249340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of decreasing metal corrosion
Assignee: Standard Oil Development Co
•
Filing: 1938-12-03
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Granted: 1941-07-15
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Expires: 1958-12-03
Abstract
No abstract record available.
Inventors
- 👤 Carroll J Wilson
- 👤 Charles E Morrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:10
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/025; C10M2207/04; C10M2207/044; C10M2207/06; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2219/00; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/10
Claims Analysis
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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) | 1944-07-14 | 1945-01-13 | 1945-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-14 | 1949-01-13 | 1949-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-14 | 1953-01-13 | 1953-07-15 | $7700.00 | Window Closed / Lapsed |