US3875189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly unsaturated polyethers
Assignee: Shell USA Inc
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Filing: 1967-07-12
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Granted: 1975-04-01
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Expires: 1987-07-12
Abstract
Abstract New glycidyl ethers of polymeric highly unsaturated polyethers are disclosed. Also disclosed are methods for preparing the new glycidyl ethers by reacting polyepihalohydrins with certain dehydrohalogenating agents under vigorous conditions.
Inventors
- 👤 Walter L Petty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:29
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/105; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5066; C08G65/00; C08G65/02; C08G65/32; C08G65/321; C08G65/325; C08G65/329; C08G65/331; C08G65/334; C08G65/3344; C08L; C08L71/00; C08L71/02; C10; C10M; C10M3/00; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A POLYMERIC HIGHLY UNSATURATED POLYETHER HAVING THE FORMULA
Claim 2
Dependent Claim
8 words
A POLYMERIC HIGHLY UNSATURATED POLYETHER HAVING THE FORMULA
References Cited (Backward Citations)
US3102893A
Cited
US3331788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |