US3867522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acne composition
Assignee: Westwood Pharmaceuticals Inc
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Filing: 1973-10-11
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Granted: 1975-02-18
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Expires: 1993-10-11
Abstract
Abstract A composition and method for the treatment of acne has been found which comprises the incorporation of sodium chloride crystals in concentrations of 30-60 percent in a carrier base, said composition being used to debride acne affected skin by abrasion.
Inventors
- 👤 Albert M Kligman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:14
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61Q; A61Q19/00; A61K2800/00; A61K2800/20; A61K2800/28; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
A METHOD FOR THE TREATMENT OF ACNE-AFFECTED SKIN WHICH COMPRISES APPLYING TO THE SKIN A COMPOSITION CONSISTING ESSENTIALLY OF SODIUM CHLORIDE CRYSTALS IN A BASE FOR TOPICAL APPLICATION, FOLLOWED BY FRICTIONAL RUBBING OF SAID COMPOSITION ON THE AFFECTED SKIN TO CAUSE ABRASION AND DEBRIDEMENT OF THE SKIN, SAID CRYSTALS BEING OF A PARTICLE SIZE AND BEING PRESENT IN AN AMOUNT SUFFICIENT TO ABRADE THE SKIN
Claim 2
Independent Claim
65 words
A METHOD FOR THE TREATMENT OF ACNE-AFFECTED SKIN WHICH COMPRISES APPLYING TO THE SKIN A COMPOSITION CONSISTING ESSENTIALLY OF SODIUM CHLORIDE CRYSTALS IN A BASE FOR TOPICAL APPLICATION, FOLLOWED BY FRICTIONAL RUBBING OF SAID COMPOSITION ON THE AFFECTED SKIN TO CAUSE ABRASION AND DEBRIDEMENT OF THE SKIN, SAID CRYSTALS BEING OF A PARTICLE SIZE AND BEING PRESENT IN AN AMOUNT SUFFICIENT TO ABRADE THE SKIN
Claim 3
Dependent Claim
23 words
The method of claim 1, wherein the composition comprises from about 30 to about 60 weight precent of discrete crystals of sodium chloride.
Claim 4
Dependent Claim
22 words
The method of claim 1, wherein the crystals of sodium chloride have a particle size of from about 200 to 500 microns.
References Cited (Backward Citations)
US3574854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |