US2958660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent and wear inhibiting mineral lubricating oil compositions
Assignee: Shell USA Inc
•
Filing: 1955-09-26
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Granted: 1960-11-01
•
Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 John A Edgar
- 👤 Bergstrom Roland Frederick
- 👤 Robert C Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:47
CPC Classifications
C; C10; C10M; C10M165/00; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/024; C10M2217/026; C10M2217/028; C10M2217/04; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/047; C10M2223/06; C10M2223/061; C10M2223/063; C10M2223/065; C10M2223/08; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/02; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/06; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND A MINOR BUT DETERGENT AMOUNT OF AN OIL-SOLUBLE COPOLYMER OF AN ACRYLATE ESTER OF AN ACRYLIC ACID AND A LONG CHAIN ALIPHATIC ALCOHOL AND A VINYL PYRIDINE IN THE MOL RATIO OF 1:1 TO 10:1 RESPECTIVELY AND HAVING A MOLECULAR WEIGHT OF FROM 50,000 TO 700,000 AND A MINOR, BUT WEAR INHIBITING AMOUNT OF AN OIL-SOLUBLE BASIC ALKALINE EARTH METAL PETROLEUM SULFONATE CONTAINING FROM 50% TO 800% EXCESS BASE.
Claim 2
Dependent Claim
82 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND A MINOR BUT DETERGENT AMOUNT OF AN OIL-SOLUBLE COPOLYMER OF AN ACRYLATE ESTER OF AN ACRYLIC ACID AND A LONG CHAIN ALIPHATIC ALCOHOL AND A VINYL PYRIDINE IN THE MOL RATIO OF 1:1 TO 10:1 RESPECTIVELY AND HAVING A MOLECULAR WEIGHT OF FROM 50,000 TO 700,000 AND A MINOR, BUT WEAR INHIBITING AMOUNT OF AN OIL-SOLUBLE BASIC ALKALINE EARTH METAL PETROLEUM SULFONATE CONTAINING FROM 50% TO 800% EXCESS BASE.
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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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |