US4426374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sunscreen formulation
Assignee: Individual
•
Filing: 1981-01-12
•
Granted: 1984-01-17
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Expires: 2001-01-12
Abstract
Abstract Novel sunscreening formulations containing halocarbon oil of the formula-(CF2CFCl)n-. Such formulations show superior shelf life and ability to withstand immersion in water while maintaining their sunscreening properties.
Inventors
- 👤 William B. Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:12
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/445; A61K8/72; A61K8/81; A61K8/8123
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
50 words
A sunscreen composition having improved adhesion in the presence of water comprising an ultraviolet light absorbing compound and a halocarbon oil, said oil being of the formula --(CF 2 CFCl) n -- and having a pour point of between -110° F. to +65° F. as measured by ASTM D97-67 Procedure.
Claim 2
Dependent Claim
50 words
A sunscreen composition having improved adhesion in the presence of water comprising an ultraviolet light absorbing compound and a halocarbon oil, said oil being of the formula --(CF 2 CFCl) n -- and having a pour point of between -110° F. to +65° F. as measured by ASTM D97-67 Procedure.
Claim 3
Dependent Claim
33 words
A sunscreen composition as set forth in claim 1, wherein said ultraviolet light absorbing compound to said halocarbon oil is in a ratio varying from 1 to 10, sunscreening agent to halocarbon oil.
Claim 4
Dependent Claim
19 words
A sunscreen composition as set forth in claim 1, wherein said ultraviolet light absorbing compound is p-amino benzoic acid.
Claim 5
Dependent Claim
26 words
A sunscreening composition as set forth in claim 1, wherein said halocarbon oil has a pour point of +35° F. as measured by ASTM D97-67 Procedure.
Claim 6
Dependent Claim
61 words
A sunscreen composition having an improved adhesion in the presence of water comprising: p-amino benzoic acid and a halocarbon oil of the general formula --(CF 2 CFCl) n --, said halocarbon oil having a pour point as measured by ASTM D97-67 Procedure of +35° F., said p-amino benzoic acid being in a ratio of 3.5/10, p-amino benzoic acid to halocarbon oil.
Claim 7
Dependent Claim
61 words
A sunscreen composition having an improved adhesion in the presence of water comprising: p-amino benzoic acid and a halocarbon oil of the general formula --(CF 2 CFCl) n --, said halocarbon oil having a pour point as measured by ASTM D97-67 Procedure of +35° F., said p-amino benzoic acid being in a ratio of 3.5/10, p-amino benzoic acid to halocarbon oil.
References Cited (Backward Citations)
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Cited
US2338416A
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Cited
GB1026981A
Cited
US3642635A
Cited
US3932614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |