US3282841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Shell USA Inc
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Filing: 1963-10-04
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Granted: 1966-11-01
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Expires: 1983-10-04
Abstract
No abstract record available.
Inventors
- 👤 Mey Pieter H Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:11
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F26/00; C08F26/06; C08F297/00; C08F297/02; C08L; C08L53/00; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2040/00; C10N2040/25; C10N2040/252; C10N2040/253; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF LUBRICATING OIL AND MINOR AMOUNT OF BLOCK COPOLYMER CONTAINING BLOCKS OF NITROGEN-FREE UNITS CONTAINING OLEOPHILIC ALKYL RADICALS OF FROM 6 TO 20 CARBON ATOOS SELECTED FROM THE GROUP CONSISTING OF ALKYL METHACRYLATE, ALKYL-SUBSTITUTED ALPHA-METHYL STYRENE, AND ALPHAOLEFIN AND BLOCKS OF HETEROCYCLIC NITROGEN-CONTAINING UNITS SELECTED FROM THE GROUP CONSISTING OF VINYL PYRIDINE AND VINYL PYRIMIDINE, THE BLOCK COPOLYMERS BEING FORMED IN THE PRESENCE OF AN ANIONIC INITIATOR.
Claim 2
Dependent Claim
75 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF LUBRICATING OIL AND MINOR AMOUNT OF BLOCK COPOLYMER CONTAINING BLOCKS OF NITROGEN-FREE UNITS CONTAINING OLEOPHILIC ALKYL RADICALS OF FROM 6 TO 20 CARBON ATOOS SELECTED FROM THE GROUP CONSISTING OF ALKYL METHACRYLATE, ALKYL-SUBSTITUTED ALPHA-METHYL STYRENE, AND ALPHAOLEFIN AND BLOCKS OF HETEROCYCLIC NITROGEN-CONTAINING UNITS SELECTED FROM THE GROUP CONSISTING OF VINYL PYRIDINE AND VINYL PYRIMIDINE, THE BLOCK COPOLYMERS BEING FORMED IN THE PRESENCE OF AN ANIONIC INITIATOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |