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US3932665A
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Process for the treatment of acne vulgaris utilizing retinal
Assignee: Individual
•
Filing: 1974-04-05
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Granted: 1976-01-13
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Expires: 1994-04-05
Abstract
Abstract This invention involves the use of retinal in topical therapy of acne vulgaris.
Inventors
- 👤 Eugene J. Van Scott
- 👤 Ruey J. Yu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:59
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/11; A61K8/00; A61K8/18; A61K8/30; A61K8/67; A61K8/671; A61Q; A61Q19/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
A method of treating acne vulgaris in a human having skin affected thereby, which method consists of: administering topically to the affected skin a therapeutically effective amount of retinal on a daily basis to promote improvement of the skin without causing worsening of the acne, irritation to the skin, and peeling of the skin.
Claim 2
Independent Claim
54 words
A method of treating acne vulgaris in a human having skin affected thereby, which method consists of: administering topically to the affected skin a therapeutically effective amount of retinal on a daily basis to promote improvement of the skin without causing worsening of the acne, irritation to the skin, and peeling of the skin.
Claim 3
Dependent Claim
29 words
A method as in claim 1, wherein the retinal is administered in an amount of from about 0.05 to about 1% by weight in a pharmacologically acceptable topical vehicle.
Claim 4
Dependent Claim
21 words
A method as in claim 2, wherein the retinal is in an amount of from about 0.1 to 0.2% by weight.
References Cited (Backward Citations)
GB901659A
Cited
US3729568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |