US3781417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light protection agent for cosmetic purposes
Assignee: Merck Patent GmbH
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Filing: 1972-12-27
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Granted: 1973-12-25
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Expires: 1992-12-27
Abstract
Abstract TOPICAL COSMETIC COMPOSITIONS CONTAINING AS AN ULTRAVIOLET ABSORBENT COMPRISING A COMPOUND OF THE FORMULA 2-(O=),3-(R-CH=),1,7,7-TRI(CH3-)NORBORNANE WHEREIN R IS P-TOLYL OR STYRYL.
Inventors
- 👤 R Welters
- 👤 H Russmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:26
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/35; C; C07; C07C; C07C49/00; C07C49/587; C07C49/657; C07C49/683
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |