US3629191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uv-absorbing 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
2026-10-29 19:04
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/496; C; C07; C07D; 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; G; G05; G05F; G05F3/00; G05F3/02; G05F3/04; G05F3/06
Claims Analysis
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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) | 1974-12-20 | 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 |