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US3816611A
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Ultraviolet light-absorbing compositions comprising a1-(phenyl or pyridyl)-3-pyridyl-1,3-propanedione
Assignee: MAG IAS GmbH Eislingen
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Filing: 1972-02-04
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Granted: 1974-06-11
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Expires: 1992-02-04
Abstract
Abstract ULTRAVOILET LIGHT-ABSORBING COMPOSITIONS COMPRISING FROM 0.5 TO 20% BY WEIGHT, BASED ON THE TOTAL WEIGHT, OF A COMPOUND OF THE FORMULA (A-CO-CH=C(-OH)-)PYRIDINE WHEREIN A IS PYRIDYL, PHENYL, HALO-PHENYL, LOWER ALKYLPHENYL OR LOWER ALKOXY-PHENYL, OR A TAUTOMER THEREOF: THE COMPOSITIONS ARE USEFUL AS COSMETIC OR DERMATOLOGICAL PREPARATIONS FOR PROTECTING THE SKIN AGAINST ULTRAVIOLET LIGHT, AND ALSO AS LIGHT-PROTECTIVE IMPREGNATING AGENTS FOR CARDBOARD AND SIMILAR PACKAGING MATERIAL.
Inventors
- 👤 H Eberhardt
- 👤 A Reuter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:51
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4906; A61K8/4926; C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/44; C07D213/46; C07D213/50
Claims Analysis
Total Claims: 0
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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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |