Patent US2831810A successfully refreshed from Google Patents.
US2831810A
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Detergent lubricating composition
Assignee: Union Oil Company of California
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Filing: 1951-06-23
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Granted: 1958-04-22
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Expires: 1971-06-23
Abstract
No abstract record available.
Inventors
- 👤 Chester E Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:57
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M135/00; C10M135/08; C10M135/10; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/025; C10M2207/026; C10M2207/28; C10M2207/284; C10M2207/285; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/14; C10N2010/16; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
38 words
A MINERAL LUBRICATING OIL HAVING DETERGENT CHARACTERISTIC CONSISTING ESSENTIALLY OF A MINERAL LUBRICATING OIL CONTAINING SMAALL AMOUNTS, BETWEEN ABOUT 0.5% AND 15% BY WEIGHT, SUFFICIENT TO IMPART DETERGENCY CHARACTERISTICS TO SAID OIL OF PHENYL BIGUANIDE OIL-SOLUBLE PETROLEUM SULFONATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |