US3585165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyoxymethylene copolymers stabilized with 3,5-diamino-1,2,4-triazole
Assignee: Evonik Operations GmbH
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Filing: 1969-01-23
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Granted: 1971-06-15
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Expires: 1989-01-23
Abstract
Abstract POLYOXYMETHYLENE COPOLYMERS CONTAINING ALKYLENOEOXY GROUPS HAVING AT LEAST TWO ADJACENT CARBON ATOMS IN THE MAIN CHAIN HAVE THEIR PROPERTIES IMPROVED, PARTICULARLY AT HIGH TEMPERATURES, BY ADMIXING WITH 3,5-DIAMINO-1,2,4TRIAZOLE. FOR USE IN AIR CONVENTIONAL ANTIOXIDANTS, PREFERABLY PHENOLS ARE ALSO INCLUDED IN THE COMPOSITION.
Inventors
- 👤 Dieter Gerlach
- 👤 Erich Bader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:30
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |