US2653133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers and lubricants containing the same
Assignee: EIDP Inc
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Filing: 1950-12-07
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Granted: 1953-09-22
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Expires: 1970-12-07
Abstract
No abstract record available.
Inventors
- 👤 Willard E Caltin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:49
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2217/00; C10M2217/02; C10M2217/026; C10N; C10N2040/00; C10N2040/08; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A LUBRICATING OIL CONTAINING FROM 0.1% TO 10% BY WEIGHT THEREOF OF AN OIL-SOLUBLE COPOLYMER OF A NITRILE FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHACRYLONITRILE, AND AN ALKYL ESTER IN WHICH THE ALKYL GROUP CONTAINS FROM 10 TO 18 CARBON ATOMS, INCLUSIVE, OF AN UNSATURATED ACID FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS, SAID NITRILE AMOUNTING TO 2% TO 20% BY WEIGHT OF SAID COPOLYMER.
Claim 2
Dependent Claim
68 words
A LUBRICATING OIL CONTAINING FROM 0.1% TO 10% BY WEIGHT THEREOF OF AN OIL-SOLUBLE COPOLYMER OF A NITRILE FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHACRYLONITRILE, AND AN ALKYL ESTER IN WHICH THE ALKYL GROUP CONTAINS FROM 10 TO 18 CARBON ATOMS, INCLUSIVE, OF AN UNSATURATED ACID FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS, SAID NITRILE AMOUNTING TO 2% TO 20% BY WEIGHT OF SAID COPOLYMER.
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) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |