Patent US2387501A successfully refreshed from Google Patents.
US2387501A
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Hydrocarbon oil
Assignee: EIDP Inc
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Filing: 1944-04-04
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Granted: 1945-10-23
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Expires: 1964-04-04
Abstract
No abstract record available.
Inventors
- 👤 Melvin A Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
C; C10; C10M; C10M151/00; C10M151/02; C10M149/00; C10M149/02; C10M149/06; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2207/40; C10M2207/402; C10M2207/404; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/08; C10M2219/082; C10M2219/10; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10N; C10N2010/00; C10N2010/02; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
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) | 1948-10-22 | 1949-04-23 | 1949-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-22 | 1953-04-23 | 1953-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-22 | 1957-04-23 | 1957-10-23 | $7700.00 | Window Closed / Lapsed |