US3629192A
Expired / Lapsed
US
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Polymers stabilized with substituted hydroxyphenyl benzotriazoles
Assignee: Novartis AG
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Filing: 1969-12-11
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Granted: 1971-12-21
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Expires: 1989-12-11
Abstract
Abstract LIGHT-STABILIZERS FOR POLYMERIC LIGHT-SENSITIVE PRODUCTS AND MATERIALS ARE PROVIDED WHICH PERTAIN TO THE CLASS OF 2-(2''-HYDROXYPHENYL)-BENZOTRIAZOLES. COMPOSITIONS OF THE COMPOUNDS AND THE LIGHT-SENSITIVE MATERIALS ARE ALSO PROVIDED.
Inventors
- 👤 Hansjorg Heller
- 👤 Jean Rody
- 👤 Ernst Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:01
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/10; C07D249/00; C07D249/16; C07D249/18; C07D249/20; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475; C09; C09K; C09K15/00; C09K15/04; C09K15/30; D; D06; D06M; D06M13/00; D06M13/322; D06M13/35; D06M13/352; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |