US3208945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust resistant lubricant composition
Assignee: California Research LLC
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Filing: 1963-05-31
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Granted: 1965-09-28
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Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Frank A Stuart
- 👤 Lowe Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:00
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/16; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/102; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/108; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/024; C10M2217/028; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/045; C10M2223/047; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
210 words
A LUBRICATING OIL COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A MEINERAL LUBRICATING OIL FROM ABOUT 0.1 TO ABOUT 10% BY WEIGHT OF POLYMERIC ASHLESS DETERGENT AND FROM ABOUT 0.05 TO ABOUT 5% BY WEIGHT OF THE COMBINATION OF MONOALKENYL SUCCINIC ACID ANHYDRIDE SELECTED FROM THE GROUP CONSISTING OF TETRAPROPENYL SUCCINIC ACID ANHYDRIDE AND TRIISOBUTENYL SUCCINIC ACID ANHYDRIDE IN COMBINATION WITH A MEMBER OF THE CLASS CONSISTING OF POLYMERIZED LINOLEIC ACID CONSISTING ESSENTIALLY OF A MIXTURE OF APPROXIMATELY 75% TO 85% BY WEIGHT OF DIMER ACID AND APPROXIMATELY 15% TO 25% BY WEIGHT OF TRIMER ACID AND HYDROGENATED POLYMERIZED LINOLEIC ACID, SAID COMBINATION CONTAINING FROM ABOUT 50 TO ABOUT 90% BY WEIGHT OF THE MONOALKENYL SUCCINIC ACID ANHYDRIDE AND FROM ABOUT 10 TO ABOUT 50% BY WEIGHT OF THE POLYMERIZED LINOLEIC ACID, AND SAID POLYMERIC ASHLESS DETERGENT BEING SELECTED FROM THE GROUP CONSISTING OF (1) THE COPOLYMER OF BUTYL METHACRYLATE, DODECYL METHACRYLATE, OCTADECYL METHACRYLATE, AND N-VINYL PYRROLIDONE HAVING A RATIO OF ALKYL METHACRYLATE TO PYRROLIDONE OF ABOUT 10:1 AND A MOLECULAR WEIGHT OF APPROXIMATELY 250,000, AND (2) THE COPOLYMER OF DODECYL METHACRYLATE, TRIDECYL METHACRYLATE, OCTADECYL METHACRYLATE, AND POLYETHYLENE GLYCOL MONOMETHACRYLATE HAVING A RATIO OF ALKYL METHACRYLATE TO POLYGLYCOL METHACRYLATE OF ABOUT 100:1 AND A MOLECULAR WEIGHT OF ABOUT 350,000.
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |