Patent US3949072A successfully refreshed from Google Patents.
US3949072A
Expired / Lapsed
US
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Topical composition for treatment of seborrheic keratosis
Assignee: Individual
•
Filing: 1974-05-01
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Granted: 1976-04-06
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Expires: 1994-05-01
Abstract
Abstract An improved topical composition for application to skin effected by seborrheic keratosis so as to provide a superficial slough of the epidermis, the composition containing an inhibited phenol, preferably potassium phenolate, a salicylate, a zinc compound and resorcinol, the active ingredients being dissolved in a non-aqueous solvent which includes a hydrophilic non-toxic lower aliphatic alcohol, the amount of phenolate present being generally lower than the amount of phenolate in comparable compositions.
Inventors
- 👤 Louis T. Tenta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:07
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/27; A61K8/30; A61K8/33; A61K8/34; A61K8/347; A61K8/36; A61K8/368; A61K2800/00; A61K2800/20; A61K2800/28; A61Q19/08; Y; Y10; Y10S; Y10S424/00; Y10S424/13
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
157 words
A topical composition for application to skin affected by seborrheic keratosis to provide a superficial slough of the epidermis, said composition comprising from 5 to 25 parts by weight of an inhibited phenol calculated as potassium phenate and selected from the group consisting of potassium, sodium and ammonium salts of phenol; one-half to two parts of a salicylate calculated as sodium salicylate and selected from the group consisting of sodium and zinc salicylate; 1 to 5 parts of resorcinol; and 1 to 4 parts of a zinc compound calculated as zinc sulfate selected from the group consisting of zinc salicylate, zinc oxide, and zinc sulfate, the aforementioned inhibited phenol, salicylate, and zinc compound being dissolved in a non-aqueous solvent containing a hydrophilic non-toxic lower aliphatic alochol in an amount sufficient to bring the total to 100 parts by weight said non-aqueous solvent being sufficient to increase the viscosity and to reduce the volatility of the resultant composition.
Claim 2
Dependent Claim
157 words
A topical composition for application to skin affected by seborrheic keratosis to provide a superficial slough of the epidermis, said composition comprising from 5 to 25 parts by weight of an inhibited phenol calculated as potassium phenate and selected from the group consisting of potassium, sodium and ammonium salts of phenol; one-half to two parts of a salicylate calculated as sodium salicylate and selected from the group consisting of sodium and zinc salicylate; 1 to 5 parts of resorcinol; and 1 to 4 parts of a zinc compound calculated as zinc sulfate selected from the group consisting of zinc salicylate, zinc oxide, and zinc sulfate, the aforementioned inhibited phenol, salicylate, and zinc compound being dissolved in a non-aqueous solvent containing a hydrophilic non-toxic lower aliphatic alochol in an amount sufficient to bring the total to 100 parts by weight said non-aqueous solvent being sufficient to increase the viscosity and to reduce the volatility of the resultant composition.
Claim 3
Dependent Claim
14 words
The topical composition of claim 1 in which said lower aliphatic alcohol is ethanol.
Claim 4
Dependent Claim
19 words
The topical composition of claim 1 in which said solvent consists of a mixture of benzyl alcohol and ethanol.
Claim 5
Dependent Claim
19 words
The topical composition of claim 1 in which said solvent consists of a mixture of propylene glycol and ethanol.
Claim 6
Dependent Claim
30 words
The topical composition of claim 1 which also contains sufficient amount of a gel forming agent selected from the group consisting of hydroxyethylcellulose and carboxymethylcellulose, to form a stable gel.
Claim 7
Dependent Claim
13 words
The composition of claim 5 in which the gel forming agent is hydroxyethylcellulose.
Claim 8
Dependent Claim
24 words
The composition of claim 1 in which the concentration of the inhibited phenol is in the range from 10 to 20 parts by weight.
Claim 9
Dependent Claim
25 words
The composition of claim 1 in which said salt is potassium phenate and said phenate constitutes from 5 to 25% by weight of the composition.
Claim 10
Dependent Claim
19 words
The composition of claim 8 in which said phenate constitutes from 10 to 20% by weight of the composition.
Claim 11
Dependent Claim
54 words
A method for treating an effected skin area to minimize the objectionable appearance of seborrheic keratosis thereon which comprises applying to the affected skin area the composition of claim 1, said composition being applied to the skin in an amount equivalent to one gram of potassium phenate per 200 square centimeters of skin area.
References Cited (Backward Citations)
US3317382A
Cited
US3821370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |