Patent US2761844A successfully refreshed from Google Patents.
US2761844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature lubricating compositions
Assignee: Gulf Research and Development Co
•
Filing: 1951-11-07
•
Granted: 1956-09-04
•
Expires: 1971-11-07
Abstract
No abstract record available.
Inventors
- 👤 Carl D Ackerman
- 👤 Paul R Mccarthy
- 👤 Thomas R Orem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:37
CPC Classifications
C; C10; C10M; C10M7/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/14; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/044; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
A LUBRICATING COMPOSITION CONSISTING OF A UNIFORM MIXTURE OF ABOUT 20 TO ABOUT 40 PER CENT BY WEIGHT OF POWDERED GRAPHITE, ABOUT 5 TO ABOUT 20 PER CENT BY WEIGHT OF DIMETHYLDICETYL AMMONIUM BENTONITE, AND ABOUT 50 TO ABOUT 70 PER CENT BY WEIGHT OF DI-2-ETHYLHEXYL SEBACATE.
References Cited (Backward Citations)
US1982199A
Cited
US2412929A
Cited
US2436347A
Cited
US2531440A
Cited
US2554222A
Cited
US2623852A
Cited
US2626241A
Cited
US2626899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |