US2993856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant containing a sulfurized terpene and sulfurized sperm oil
Assignee: Texaco Inc
•
Filing: 1957-11-18
•
Granted: 1961-07-25
•
Expires: 1977-11-18
Abstract
No abstract record available.
Inventors
- 👤 Theodore C Heisig
- 👤 Corrigan Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M135/00; C10M135/02; C10M163/00; C10M2203/00; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/101; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/047; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/04; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A LUBRICANT COMPOSITION SUITABLE FOR THE LUBRICATION OF INTERNAL COMBUSTION ENGINES HAVING LUBRICATED COPPERLEAD AND SILVER SURFACES WHICH CONSISTS ESSENTIALLY OF A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL CONTAINING A SMALL AMOUNT, SUFFICIENT TO IMPART IMPROVED ANTI-CORROSIVENESS TO COPPER-LEAD TO THE COMPOSITION OF A SULFURIZED TERPENE CONSISTING OF HYDROGEN, CARBON AND SULFUR, AND A SMALL AMOUNT, SUFFICIENT TO IMPART IMPROVED LUBRICATION OF SILVER TO THE COMPOSITION, OF SULFURIZED SPERM OIL.
Claim 2
Dependent Claim
30 words
A LUBRICANT COMPOSITION ACCORDING TO CLAIM 2 WHEREIN THE SAID COMPOSITION CONTAINS ABOUT 0.1-10 PERCENT BY WEIGHT OF A DETERGENT SELECTED FROM THE CLASS OF METAL SALTS OF ORGANIC COMPOUNDS.
References Cited (Backward Citations)
US2179060A
Cited
US2179067A
Cited
US2279086A
Cited
US2417305A
Cited
GB656253A
Cited
US2443823A
Cited
US2445983A
Cited
US2537297A
Cited
US2654711A
Cited
US2654712A
Cited
GB680363A
Cited
US2691648A
Cited
US2684334A
Cited
US2815326A
Cited
GB750094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |