US4335115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-acne composition
Assignee: Procter and Gamble Co
•
Filing: 1977-10-17
•
Granted: 1982-06-15
•
Expires: 1997-10-17
Abstract
Abstract Compositions for topical application of erythromycin and derivatives or erythromycin comprising ethanol, isopropyl myristate, glycerol monooleate and the erythromycin compounds are especially useful as a treatment for acne.
Inventors
- 👤 Edward D. Thompson
- 👤 Stephen B. Carter
- 👤 Gary L. Manring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:08
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K47/00; A61K47/06; A61K47/08; A61K47/10; A61K47/14; A61K8/00; A61K8/18; A61K8/30; A61K8/60; A61K8/602; A61K9/00; A61K9/0012; A61K9/0014; A61Q; A61Q17/00; A61Q17/005; A61Q19/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
45 words
A water-free antimicrobial composition for topical application which consists essentially of: (1) from about 2% to about 5% erythromycin; (2) from about 1% to about 5% glycerol monooleate; (3) from about 30% to about 45% ethanol; and (4) about 45% to about 60% isopropyl myristate.
Claim 2
Dependent Claim
45 words
A water-free antimicrobial composition for topical application which consists essentially of: (1) from about 2% to about 5% erythromycin; (2) from about 1% to about 5% glycerol monooleate; (3) from about 30% to about 45% ethanol; and (4) about 45% to about 60% isopropyl myristate.
Claim 3
Independent Claim
56 words
A method of treating acne topically by applying to the afflicted situs a safe and effective amount of a composition comprising: (1) from about 2% to about 5% erythromycin; (2) from about 1% to about 5% glycerol monooleate; (3) from about 30% to about 45% ethanol; and (4) from about 45% to about 60% isopropyl myristate.
Claim 4
Independent Claim
56 words
A method of treating acne topically by applying to the afflicted situs a safe and effective amount of a composition comprising: (1) from about 2% to about 5% erythromycin; (2) from about 1% to about 5% glycerol monooleate; (3) from about 30% to about 45% ethanol; and (4) from about 45% to about 60% isopropyl myristate.
References Cited (Backward Citations)
US3535422A
Cited
US4056611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |