US3714289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polyhydroxy ethers modified with polyamides
Assignee: Union Carbide Corp
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Filing: 1971-10-26
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Granted: 1973-01-30
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Expires: 1991-10-26
Abstract
Abstract BLENDS OF THERMOPLASTIC POLYHYDROXYETHERS, DERIVED FROM BISPHENOL A AND EPICHLOROHYDRIN, WITH POLYAMIDES WERE PREPARED HAVING SUPERIOR ENVIRONMENTAL STRESS CRACK RESISTANCE OVER THAT OF THE POLYHYDROXYETHERS ALONE. THE RESULTANT BLENDS ARE MECHANICALY COMPATIBLE AND CAN BE MOLDED AND BLOWN INTO FILM FORM.
Inventors
- 👤 D Schober
- 👤 Grath J Mc
- 👤 M Matzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:16
CPC Classifications
C; C08; C08L; C08L71/00; C08L77/00; C08L77/02; C08L77/06; Y; Y10; Y10S; Y10S525/00; Y10S525/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |