US2423865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticorrosive
Assignee: Shell Development Co
•
Filing: 1944-02-28
•
Granted: 1947-07-15
•
Expires: 1964-02-28
Abstract
No abstract record available.
Inventors
- 👤 White Ellis Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:39
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/135; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1689153A
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US1769423A
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US1915148A
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FR746434A
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FR42766E
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US2064395A
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US2096905A
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US2357211A
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US2256442A
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US2364283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |