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US3424725A
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Copolymers of trioxane,cyclic ethers,and bifunctional epoxides and a process for their manufacture
Assignee: Hoechst AG
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Filing: 1965-10-01
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Granted: 1969-01-28
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Expires: 1985-10-01
Abstract
No abstract record available.
Inventors
- 👤 Edgar Fischer
- 👤 Claus Schott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:30
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G2/18; C08G2/22; C08G2/24; C08G4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3135706A
Cited
US3065213A
Cited
US3208975A
Cited
US3297647A
Cited
US3293219A
Cited
US3275604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |