Patent US4787973A successfully refreshed from Google Patents.
Patent US3112271A successfully refreshed from Google Patents.
US3112271A
Expired / Lapsed
US
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Liquid hydrocarbon composition
Assignee: Shell USA Inc
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Filing: 1959-04-13
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Granted: 1963-11-26
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Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 George M Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:07
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; A; A01; A01N; A01N57/00; A01N57/18; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C07F9/40; C07F9/4003; C07F9/4006; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2608; C10M137/00; C10M137/12; C10M137/14; C10L1/2616; C10L1/2625; C10M2201/00; C10M2201/10; C10M2201/102; C10M2203/00; C10M2203/06; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/14; C10M2205/16; C10M2205/17; C10M2205/18; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2209/108; C10M2209/109; C10M2211/00; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/084; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10M2223/06; C10M2223/063; C10M2223/065; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2227/00; C10M2227/08; C10M2227/082; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/14; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/08; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08; C10N2040/12; C10N2040/13; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20; C10N2040/22; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2040/46; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF LUBRICATING OIL AND A MINOR AMOUNT, SUFFICIENT TO IMPART EXTREME PRESSURE PROPERTIES TO THE LUBRICATING OIL, OF AN OIL-SOLUBLE ALKYLMERCAPTOMETHYLPHOSPHONO COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
34 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF LUBRICATING OIL AND A MINOR AMOUNT, SUFFICIENT TO IMPART EXTREME PRESSURE PROPERTIES TO THE LUBRICATING OIL, OF AN OIL-SOLUBLE ALKYLMERCAPTOMETHYLPHOSPHONO COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2391099A
Cited
US2346155A
Cited
US2724718A
Cited
US2971019A
Cited
US2535174A
Cited
US2689220A
Cited
US2737492A
Cited
GB751755A
Cited
GB804141A
Cited
US2881201A
Cited
US2857305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |