Patent US4489057A successfully refreshed from Google Patents.
US4489057A
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U.V. Absorbing cosmetic compositions
Assignee: Merck Patent GmbH
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Filing: 1980-05-12
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Granted: 1984-12-18
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Expires: 2000-05-12
Abstract
Abstract Cosmetic compositions containing dibenzoylmethane compounds of the formula <IMAGE> wherein R and R1 are straight-chain or branched alkyl of 1-8 carbon atoms, n an integer from 0-3 and n' an integer from 1-3, dissolved in the fatty components of said composition have superior sun-protection efficiency.
Inventors
- 👤 Reiner Welters
- 👤 Juergen Gehlhaus
- 👤 Gernot Moeschl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:21
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/35; C; C07; C07C; C07C45/00; C07C45/45; C07C45/455; C07C45/51; C07C45/511; C07C45/513; C07C45/61; C07C45/63; C07C49/00; C07C49/76; C07C49/782; C07C49/784; C07C49/80; C07C49/813; C07C49/82; C07C49/835
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
33 words
A cosmetic composition containing a U.V. absorbing effective concentration of 4-isopropyldibenzoylmethane dissolved in the fatty components of a cosmetically acceptable oil, emulsion, cream, ointment or aerosol carrier adapted for application to human skin.
Claim 2
Dependent Claim
33 words
A cosmetic composition containing a U.V. absorbing effective concentration of 4-isopropyldibenzoylmethane dissolved in the fatty components of a cosmetically acceptable oil, emulsion, cream, ointment or aerosol carrier adapted for application to human skin.
Claim 3
Dependent Claim
11 words
The composition of claim 1, containing 0.5-8.0% by weight of 4-isopropyldibenzoylmethane.
Claim 4
Dependent Claim
23 words
The composition of claim 1, wherein the cosmetically acceptable carrier is based on a hydrocarbon or vegetable or animal oil, fat or wax.
Claim 5
Dependent Claim
37 words
A method for the protection of human skin against an overdose of U.V. radiation in the region between 285 and 380 nm which comprises coating the skin exposed to sunlight with a composition according to claim 1.
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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |