US3763277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of inter-polymers of poly(ethylene oxide)
Assignee: Union Carbide Corp
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Filing: 1971-07-01
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Granted: 1973-10-02
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Expires: 1991-07-01
Abstract
Abstract INTERPOLYMERS OF POLY(EHTYLENE OXIDE) AND A VINYL MONOMER OF MIXTURES OF VINYL MONOMERS PREPARED BY COMBINING POLY(ETHYLENE OXIDE), THE VINYL MONOMER OR MIXTURES OF VINYL MONOMERS IN AN AQUEOUS MEDIUM AND POLYMERIZING THE VINYL MONOMER OR MONOMERS IN THE PRESENCE OF A REDOX CATALYST SYSTEM COMPOSED OF A FERROUS SALT AND AN OXIDIZING AGENT. THE PRODUCTS FORMED ARE CASTABLE INTO FILMS HAVING UNIQUE PHYSICAL PROPERTIES.
Inventors
- 👤 Shieh Chu Nan
- 👤 L Wartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:17
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/06
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |