US4112121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for the treatment of seborrheic keratosis
Assignee: Individual
•
Filing: 1977-08-03
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Granted: 1978-09-05
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Expires: 1997-08-03
Abstract
Abstract Method and composition for the chemexfoliation (chemical exfoliation) of seborrheic keratosis and related conditions, the composition consisting essentially of an alkali metal or ammonium phenate, a monohydric alcohol, a polyhydric alcohol humectant and a gelling agent.
Inventors
- 👤 Louis T. Tenta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:15
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/34; A61K8/347; A61K31/00; A61K31/045; A61K31/05; A61K47/00; A61K47/06; A61K47/08; A61K47/10; A61K47/30; A61K47/36; A61K47/38; A61K8/02; A61K8/04; A61K8/042; A61K8/345; A61K8/72; A61K8/73; A61K8/731; A61K9/00; A61K9/0012; A61K9/0014; A61Q; A61Q19/00; A61K2800/00; A61K2800/20; A61K2800/28; Y; Y10; Y10S; Y10S424/00; Y10S424/13
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
94 words
A chemexfoliation composition for the treatment of seborrheic keratosis consisting essentially of an alkali metal or ammonium phenate in an amount sufficient to provide a concentration of 4 to 20 weight % calculated as free phenol, a monohydric alcohol in an amount of from 25 to 85 weight %, a polyhydric alcohol humectant in an amount of from 5 to 35 weight %, and a pharmacologically acceptable, non-toxic gelling agent in an amount of from 5 to 15 weight %, said gelling agent providing a means for adhering the composition to the skin surface.
Claim 2
Dependent Claim
94 words
A chemexfoliation composition for the treatment of seborrheic keratosis consisting essentially of an alkali metal or ammonium phenate in an amount sufficient to provide a concentration of 4 to 20 weight % calculated as free phenol, a monohydric alcohol in an amount of from 25 to 85 weight %, a polyhydric alcohol humectant in an amount of from 5 to 35 weight %, and a pharmacologically acceptable, non-toxic gelling agent in an amount of from 5 to 15 weight %, said gelling agent providing a means for adhering the composition to the skin surface.
Claim 3
Dependent Claim
12 words
The composition of claim 1 in which said phenate is potassium phenate.
Claim 4
Dependent Claim
12 words
The composition of claim 1 in which said monohydric alcohol is ethanol.
Claim 5
Dependent Claim
12 words
The composition of claim 1 in which said humectant is ethylene glycol.
Claim 6
Dependent Claim
12 words
The composition of claim 1 in which said humectant is propylene glycol.
Claim 7
Dependent Claim
12 words
The composition of claim 1 in which said gelling agent is hydroxyethylcellulose.
Claim 8
Dependent Claim
12 words
The composition of claim 1 in which said gelling agent is carboxymethylcellulose.
Claim 9
Dependent Claim
93 words
A chemexfoliation composition for the treatment of seborrheic keratosis consisting essentially of potassium phenate in an amount sufficient to provide a free phenol concentration of from 4 to 20 weight %, ethanol in an amount of from 25 to 85 weight %, ethylene glycol in an amount of from 5 to 35 weight %, and a pharmacologically acceptable, non-toxic hydroxyethylcellulose in an amount of from 5 to 15 weight % and sufficient to cause the formation of a stable gel, said hydroxyethylcellulose providing a means for adhering the composition to the skin surface.
Claim 10
Dependent Claim
93 words
A chemexfoliation composition for the treatment of seborrheic keratosis consisting essentially of potassium phenate in an amount sufficient to provide a free phenol concentration of from 4 to 20 weight %, ethanol in an amount of from 25 to 85 weight %, ethylene glycol in an amount of from 5 to 35 weight %, and a pharmacologically acceptable, non-toxic hydroxyethylcellulose in an amount of from 5 to 15 weight % and sufficient to cause the formation of a stable gel, said hydroxyethylcellulose providing a means for adhering the composition to the skin surface.
Claim 11
Dependent Claim
28 words
A method for treating an affected skin area to minimize the objectionable appearance of seborrheic keratosis which comprises applying to the affected area the composition of claim 1.
Claim 12
Dependent Claim
29 words
A method for treating an affected skin area to minimize the objectionable appearance of seborrheic keratosis which comprises applying to the affected skin area the composition of claim 8.
References Cited (Backward Citations)
US3821370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |