US2886524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clay grease compositions and process of preparation therefor
Assignee: Shell Development Co
•
Filing: 1956-01-27
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Granted: 1959-05-12
•
Expires: 1976-01-27
Abstract
No abstract record available.
Inventors
- 👤 Jack W Armstrong
- 👤 Donald M Preiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:30
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1305; C10; C10M; C10M5/00; C10M7/00; C10M2201/00; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2201/085; C10M2201/14; C10M2205/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2211/00; C10M2211/02; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/066; C10M2215/068; C10M2215/086; C10M2215/14; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/04; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10N; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/02; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2033856A
Cited
US2623853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |