US3761404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant compositions
Assignee: Individual
•
Filing: 1971-09-09
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Granted: 1973-09-25
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Expires: 1991-09-09
Abstract
Abstract A LUBRICANT COMPOSITION ESPECIALLY USEFUL IN DIESEL ENGINES CONTAINING A MAJOR AMOUNT OF A LUBRICATING OIL, AN AMOUNT OF A SALT OF A DIVALENT METAL AND AN ALKYLSALICYLIC ACID, AS DISPERSANT, EFFECTIVE TO DISPERSE DEPOSIT FORMING MATERIALS IN THE OIL MEDIUM, AND A VISCOSITY IMPROVING AMOUNT OF A HYDROGENATED RANDOM COPOLYMER OF BUTADIENE AND STYRENE CONTAINING SUBSTANTIALLY ONLY AROMATIC UNSATURATION.
Inventors
- 👤 J Calow
- 👤 N Small
- 👤 B Bull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:43
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/06; C10M2207/00; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/26; C10M2207/262; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; Y; Y10; Y10S; Y10S148/00; Y10S148/065
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |