US2230543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant with high temperature stability
Assignee: Standard Oil Development Co
•
Filing: 1938-12-30
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Granted: 1941-02-04
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Expires: 1958-12-30
Abstract
No abstract record available.
Inventors
- 👤 Louis A Mikeska
- 👤 Joseph F Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:19
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2030/00; C10N2030/12; 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) | 1944-02-04 | 1944-08-05 | 1945-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-04 | 1948-08-05 | 1949-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-04 | 1952-08-05 | 1953-02-04 | $7700.00 | Window Closed / Lapsed |