US4107330A
Expired / Lapsed
US
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Topical application of thioglycolic acid in the treatment of acne
Assignee: Individual
•
Filing: 1969-04-04
•
Granted: 1978-08-15
•
Expires: 1989-04-04
Abstract
Abstract A preparation containing as an active ingredient 0.1 to 10% by weight of thioglycolic acid and the salts, esters, and acid amides thereof, is employed in the treatment of acne.
Inventors
- 👤 Aaron Leonard Sheffner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:33
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61Q; A61Q19/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
A process for treating acne comprising: (1) applying to the acne affected skin of a person suffering therefrom, an acne alleviating amount of a topical composition containing 0.1% to 10% by weight of thioglycolic acid or a pharmaceutically acceptable salt thereof, and (2) keeping said composition in contact with the affected skin for several hours.
Claim 2
Dependent Claim
55 words
A process for treating acne comprising: (1) applying to the acne affected skin of a person suffering therefrom, an acne alleviating amount of a topical composition containing 0.1% to 10% by weight of thioglycolic acid or a pharmaceutically acceptable salt thereof, and (2) keeping said composition in contact with the affected skin for several hours.
Claim 3
Dependent Claim
45 words
The process of claim 1 wherein said thioglycolic acid is applied topically in the form of a pharmaceutically acceptable acid solution of the following composition: Thioglycolic acid: 5.0 g. Hexachlorophene: 1.0 g. Disodium EDTA: 0.05 g. Sodium hydroxide qs: pH 7.0 Distilled water: 100 ml.
Claim 4
Dependent Claim
32 words
The process of claim 1 wherein said thioglycolic acid is applied topically in the form of a pharmaceutically acceptable lotion of the following composition: Thioglycolic acid: 2.0 g. Triethanolamine: to pH 7.0
Claim 5
Dependent Claim
15 words
Disodium EDTA: 0.05 g. Calamine: 8.0 g. Hexachlorophene: 1.0 g. Distilled water qs: 100 ml.
Claim 6
Dependent Claim
15 words
Disodium EDTA: 0.05 g. Calamine: 8.0 g. Hexachlorophene: 1.0 g. Distilled water qs: 100 ml.
Claim 7
Dependent Claim
69 words
The process of claim 1 wherein said thioglycolic acid is applied topically in the form of a pharmaceutically acceptable ointment of the following composition: Sodium thioglycolate: 1.2 g. Disodium EDTA: 0.5 g. Methylparaben: 0.25 g. Propylparaben: 0.15 g. Sodium lauryl sulfate: 10.0 g. Tetracycline hydrochloride: 0.5 g. Propylene glycol: 120.0 g. Stearyl alcohol: 250.0 g. Sodium hydroxide qs: ph 5.0 White petrolatum: 250.0 g. Distilled water qs: 1000 ml.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein said concentration is 0.1% to 5% by weight.
Claim 9
Dependent Claim
14 words
The process of claim 5 wherein said concentration is 0.1 to 2% by weight.
Claim 10
Dependent Claim
24 words
The process of claim 1 wherein 0.1 to 5% by weight of the sodium salt of thioglycolic acid is applied topically to the skin.
Claim 11
Dependent Claim
24 words
The process of claim 7 wherein 0.1 to 2.0% by weight of the sodium salt of thioglycolic acid is applied topically to the skin.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-14 | 1982-02-13 | 1982-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-14 | 1986-02-13 | 1986-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-14 | 1990-02-13 | 1990-08-15 | $7700.00 | Window Closed / Lapsed |