US2441496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oils
Assignee: ConocoPhillips Co
•
Filing: 1942-11-09
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Granted: 1948-05-11
•
Expires: 1962-11-09
Abstract
No abstract record available.
Inventors
- 👤 Bert H Lincoln
- 👤 Gordon D Byrkit
- 👤 Waldo L Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:39
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/40; C10M2207/404; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10M2223/049; C10M2223/06; C10M2223/061; C10M2223/10; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-11 | 1951-11-10 | 1952-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-11 | 1955-11-10 | 1956-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-11 | 1959-11-10 | 1960-05-11 | $7700.00 | Window Closed / Lapsed |