Patent US4338293A successfully refreshed from Google Patents.
US4338293A
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Sunscreening agent
Assignee: General Hospital Corp
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Filing: 1981-02-25
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Granted: 1982-07-06
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Expires: 2001-02-25
Abstract
Abstract A sunscreening composition which comprises a sunscreening amount of a Δ 5 ,7 steroidal diene and a topical carrier, with the proviso that the Δ 5 ,7 steroidal diene is not a precursor to a biologically active vitamin D compound.
Inventors
- 👤 Michael F. Holick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:48
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/63
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
89 words
A sunscreen composition which comprises a sunscreening amount of a substituted or unsubstituted Δ 5 ,7 steroidal diene capable of blocking UVB radiation and having the formula ##STR7## wherein X is H or R 1 O; where R 1 is C 1 -C 12 alkyl, aryl or R 1 is R 2 CO, where R 2 is C 1 -C 12 alkyl or aryl; and a topical carrier; with a proviso that said Δ 5 ,7 steroidal diene is not a precursor to a biologically active vitamin D compound.
Claim 2
Dependent Claim
89 words
A sunscreen composition which comprises a sunscreening amount of a substituted or unsubstituted Δ 5 ,7 steroidal diene capable of blocking UVB radiation and having the formula ##STR7## wherein X is H or R 1 O; where R 1 is C 1 -C 12 alkyl, aryl or R 1 is R 2 CO, where R 2 is C 1 -C 12 alkyl or aryl; and a topical carrier; with a proviso that said Δ 5 ,7 steroidal diene is not a precursor to a biologically active vitamin D compound.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein said Δ 5 ,7 steroidal diene contains a double bond at position 3-thereof.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said diene is a 3-deoxy diene.
Claim 5
Dependent Claim
13 words
The composition of claim 2 wherein said diene is a 3-enol acylated steroid.
Claim 6
Dependent Claim
13 words
The composition of claim 2 wherein said diene is a 3-enol ether steroid.
Claim 7
Dependent Claim
20 words
The composition of claim 1 wherein said biologically active vitamin D compound is 1 α, 25 -dihydroxyvitamin D 3 .
Claim 8
Independent Claim
88 words
A method for protecting the human skin from ultraviolet radiation which comprises applying to said skin a substituted or unsubstituted Δ 5 ,7 steroidal diene capable of blocking UVB radiation and having the formula ##STR8## wherein X is H or R 1 O, where R 1 is C 1 -C 12 alkyl, aryl or R 1 is R 2 CO, where R 2 is C 1 -C 12 alkyl or aryl; with the proviso that said diene is not a precursor to a biologically active vitamin D compound.
Claim 9
Independent Claim
88 words
A method for protecting the human skin from ultraviolet radiation which comprises applying to said skin a substituted or unsubstituted Δ 5 ,7 steroidal diene capable of blocking UVB radiation and having the formula ##STR8## wherein X is H or R 1 O, where R 1 is C 1 -C 12 alkyl, aryl or R 1 is R 2 CO, where R 2 is C 1 -C 12 alkyl or aryl; with the proviso that said diene is not a precursor to a biologically active vitamin D compound.
Claim 10
Dependent Claim
19 words
The method of claim 7 wherein said Δ 5 ,7 steroidal diene contains a double bond at position 3-thereof.
Claim 11
Dependent Claim
12 words
The method of claim 8, wherein said diene is a 3-deoxy diene.
Claim 12
Dependent Claim
17 words
The method of claim 8 wherein said Δ 5 ,7 steroidal diene is a 3-enol acylated steroid.
Claim 13
Dependent Claim
17 words
The method of claim 8 wherein said Δ 5 ,7 steroidal diene is a 3-enol ether steroid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |