US3591570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of propylene oxide and allyl glycidyl ethers
Assignee: Dow Chemical Co
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Filing: 1968-09-20
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Granted: 1971-07-06
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Expires: 1988-09-20
Abstract
Abstract VULCANIZABLE AND VULCANIZED COPOLYMERS OF PROPYLENE OXIDE ARE MADE BY THE COPOLYMERIZATION OF PROPYLENE OXIDE WITH A GLYCIDYL ETHER CONTAINING AN ALLYLIC TERMINAL GROUP SUCH THAT AT LEAST ONE OXYALKYLENE OR THIOALKYLENE GROUP INTERVENES BETRWEEN THE GLYCIDYL GROUP AND THE ALLYLIC GROUP OF THE MONOMER.
Inventors
- 👤 Arthur E Gurgiolo
- 👤 Robert W Mcada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:09
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |