US3594346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamides stabilised against degradation by light
Assignee: Bayer AG
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Filing: 1968-05-24
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Granted: 1971-07-20
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Expires: 1988-05-24
Abstract
Abstract POLYAMIDES, STABILIZED AGAINST DEGRADATION BY LIGHT, CONTAINING A COMBINATION OF MANGANESE COMPOUNDS AND PHOSPHOROUS COMPOUNDS OF THE GENERAL FORMULA R1-P(-R2)-R3 OR O=P(-R1)(-R2)-R3 WHEREIN R1, R2, AND R3, WHICH MAY BE DIFFERENT OR NOT, REPRESENT ALKYL, CYCLOALKYL, ARALKYL, ARYL, ALKOXY, CYCLOALKOXY, ARALKOXY OR ARYLOXY RADICALS.
Inventors
- 👤 Karl Heinz Hermann
- 👤 August Bockmann
- 👤 Hans Rudolph
- 👤 Walter Bockmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/50; C08K5/0091; C08K5/51; C08K5/53; C08K5/5397
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |