Patent US4522807A successfully refreshed from Google Patents.
US4522807A
Expired / Lapsed
US
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Substantive topical compositions
Assignee: Bayer Consumer Care Holdings LLC
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Filing: 1983-05-19
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Granted: 1985-06-11
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Expires: 2003-05-19
Abstract
Abstract A highly substantive topical composition in the form of an oil-in-water emulsion containing an octadecene-1/maleic anhydride copolymer.
Inventors
- 👤 Carl Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:11
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8164; A61K47/00; A61K47/30; A61K47/32; A61K9/00; A61K9/0012; A61K9/0014; A61Q; A61Q17/00; A61Q17/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
47 words
A dermatologically compatible, highly substantive sunscreening oil-in-water emulsion composition comprising 0.1 to 5% octadecene-1/maleic anhydride copolymer having a molecular weight of 4,000 to 100,000, an effective sunscreening amount of a sunscreening agent, an oil, from 40 to 95% water and having a pH of 6 to 10.
Claim 2
Dependent Claim
47 words
A dermatologically compatible, highly substantive sunscreening oil-in-water emulsion composition comprising 0.1 to 5% octadecene-1/maleic anhydride copolymer having a molecular weight of 4,000 to 100,000, an effective sunscreening amount of a sunscreening agent, an oil, from 40 to 95% water and having a pH of 6 to 10.
Claim 3
Dependent Claim
17 words
A composition according to claim 1 wherein the concentration of said copolymer is 0.3 to 3.0 percent.
Claim 4
Dependent Claim
19 words
A composition according to claim 1 in which said copolymer has a molecular weight of about 40,000 to 60,000.
Claim 5
Dependent Claim
17 words
A composition according to claim 3 in which the molecular weight of said copolymer is about 50,000.
Claim 6
Dependent Claim
23 words
A composition according to claim 1 in which the monomers of said copolymer are present in substantially a 1:2 to 2:1 molar ratio.
Claim 7
Dependent Claim
18 words
A composition according to claim 5 in which said monomers are present in substantially a 1:1 molar ratio.
Claim 8
Dependent Claim
16 words
A composition according to claim 6 wherein said copolymer has a melting point range of 110°-120°.
Claim 9
Dependent Claim
14 words
A composition according to claim 1 in which the composition is an anionic emulsion.
Claim 10
Dependent Claim
14 words
A composition according to claim 1 in which the sunscreening agent comprises homomenthyl salicylate.
Claim 11
Dependent Claim
14 words
A composition according to claim 1 in which the sunscreening agent comprises octyldimethyl PABA.
Claim 12
Dependent Claim
14 words
A composition according to claim 1 in which the sunscreening agent comprises octyl methoxycinnamate.
Claim 13
Dependent Claim
17 words
A composition according to claim 1 in which the pH of said composition is 7 to 9.
Claim 14
Independent Claim
47 words
A method of increasing the substantivity of an oil-in-water sunscreening emulsion containing an oil, a sunscreening agent, and 40 to 95% water by incorporating therein 0.1 to 5% of octadecene-1/maleic anhydride copolymer having a molecular weight of 4,000 to 100,000 wherein the pH is 6 to 10.
Claim 15
Independent Claim
47 words
A method of increasing the substantivity of an oil-in-water sunscreening emulsion containing an oil, a sunscreening agent, and 40 to 95% water by incorporating therein 0.1 to 5% of octadecene-1/maleic anhydride copolymer having a molecular weight of 4,000 to 100,000 wherein the pH is 6 to 10.
Claim 16
Dependent Claim
25 words
The method of claim 13 wherein the sunscreen agent is selected from the group consisting of octyl dimethyl PABA, homomenthyl salicylate, benzophenone-3, and octyl methoxycinnimate.
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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) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |