US2906738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of curing polymers of tetrahydrofuran
Assignee: EIDP Inc
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Filing: 1956-11-19
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Granted: 1959-09-29
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Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Earl J Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:34
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A COMPOSITION COMPRISING A HIGH MOLECULAR WEIGHT POLYMER HAVING A MOLECULA WEIGHT OF AT LEAST ABOUT 5000 AND BEING SELECTED FROM THE GROUP CONSISTING OF POLYTETRAHYDROFURAN, COPOLYMERS OF TETRAHYDROFURAN AND A CYCLIC ETHER SELECTED FROM THE GROUP CONSISING 3 AND 4 MEMBERED CYCLIC ETHERS, AND POLY (POLYTETRAMETHYLENECTHER) URETHANES, FROM 0.5 TO 10.0% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORGANIC PEROXIDES AND AZOBISALIPHATIC NITRILES, AND FROM 1.0 TO 6.0% WEIGHT OF A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
80 words
A COMPOSITION COMPRISING A HIGH MOLECULAR WEIGHT POLYMER HAVING A MOLECULA WEIGHT OF AT LEAST ABOUT 5000 AND BEING SELECTED FROM THE GROUP CONSISTING OF POLYTETRAHYDROFURAN, COPOLYMERS OF TETRAHYDROFURAN AND A CYCLIC ETHER SELECTED FROM THE GROUP CONSISING 3 AND 4 MEMBERED CYCLIC ETHERS, AND POLY (POLYTETRAMETHYLENECTHER) URETHANES, FROM 0.5 TO 10.0% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORGANIC PEROXIDES AND AZOBISALIPHATIC NITRILES, AND FROM 1.0 TO 6.0% WEIGHT OF A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2444536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |