US2749310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating compositions
Assignee: Shell Development Co
•
Filing: 1954-09-03
•
Granted: 1956-06-05
•
Expires: 1974-09-03
Abstract
No abstract record available.
Inventors
- 👤 Paul H Williams
- 👤 Lawrence B Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:06
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M2201/00; C10M2201/087; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/10; C10M2209/103; C10M2209/107; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/04; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/10; C10M2215/102; C10M2215/16; C10M2215/18; C10M2215/20; C10M2215/202; C10M2215/204; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/086; C10M2219/087; C10M2219/089; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10M2223/10; C10M2223/12; C10M2229/00; C10M2229/04; C10M2229/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A CLEAR LUBRICATING OIL COMPOSITION STABLE AGAINST PHASE SEPARATION COMPRISING A MAJOR AMOUNT OF A MINERAL LUBRICATING OIL AND FROM ABOUT 0.1% TO ABOUT 2% BY WEIGHT EACH OF BORIC ACID, LECITHIN AND AN OIL-SOLUBLE 2-ALKYL OXAZOLINE COMPOUND CONTAINING IN THE 4-POSITION A POLAR RADICAL SELECTED FROM THE GROUP CONSISTING OF A HYDROXYL RADICAL AND A HYDROXYALKYL RADICAL.
Claim 2
Dependent Claim
58 words
A CLEAR LUBRICATING OIL COMPOSITION STABLE AGAINST PHASE SEPARATION COMPRISING A MAJOR AMOUNT OF A MINERAL LUBRICATING OIL AND FROM ABOUT 0.1% TO ABOUT 2% BY WEIGHT EACH OF BORIC ACID, LECITHIN AND AN OIL-SOLUBLE 2-ALKYL OXAZOLINE COMPOUND CONTAINING IN THE 4-POSITION A POLAR RADICAL SELECTED FROM THE GROUP CONSISTING OF A HYDROXYL RADICAL AND A HYDROXYALKYL RADICAL.
References Cited (Backward Citations)
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US2530937A
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US2587955A
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US2564423A
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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) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |