Patent US3208980A successfully refreshed from Google Patents.
US3208980A
Expired / Lapsed
US
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Polymer compositions using liquid carboxy-terminated diene polymer and epoxidized compound
Assignee: Phillips Petroleum Co
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Filing: 1960-12-30
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Granted: 1965-09-28
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Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jerry T Gruver
- 👤 Kraus Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:31
CPC Classifications
C; C08; C08L; C08L13/00; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08L63/00; C08L63/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
A COMPOSITION OBTAINED BY HEATING A MIXTURE OF A LIQUID CARBOXY-TERMINATED CHAIN POLYMER OF A CONJUGATED DIENE WHICH CAN BE REPRESENTED BY THE GENERAL FORMULA HOOC-(CH2-CH=CH-CH2)N-COOH WHEREIN N IS IN THE APPROXIMATE RANGE 10-300 AND A LIQUID CHAIN POLYEPOXIDE COMPOUND CONTAINING AT LEAST 3 EPOXY GROUPS.
References Cited (Backward Citations)
US2352461A
Cited
US2836586A
Cited
US2877212A
Cited
US2829135A
Cited
US2829130A
Cited
US2858323A
Cited
US2970983A
Cited
US3135716A
Cited
US3097193A
Cited
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 |