US3142664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil soluble copolymer of a nu-vinyl pyrrolidinone and an alkyl ester of an unsaturated monocarboxylic acid
Assignee: Rohm and Haas Co
•
Filing: 1955-08-19
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Granted: 1964-07-28
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Expires: 1975-08-19
Abstract
No abstract record available.
Inventors
- 👤 La Verne N Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:07
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1812; C08F220/1818; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/146; C10L1/22; C10L1/234; C10L1/236; C10L1/2368; C10L1/24; C10L1/2462; C10L1/2468; C10M2203/00; C10M2203/10; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
AN OIL-SOLUBLE COPOLYMER OF (1) FROM 5% TO 30% BY WEIGHT OF A N-VINYL PYRROLIDINONE CONTAINING NOT OVER TEN CARBON ATOMS IN ALL AND HAVING THE FORMULA
Claim 2
Dependent Claim
27 words
AN OIL-SOLUBLE COPOLYMER OF (1) FROM 5% TO 30% BY WEIGHT OF A N-VINYL PYRROLIDINONE CONTAINING NOT OVER TEN CARBON ATOMS IN ALL AND HAVING THE FORMULA
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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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |