US3856954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Topical steroid compositions
Assignee: ER Squibb and Sons LLC
•
Filing: 1972-11-08
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Granted: 1974-12-24
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Expires: 1992-11-08
Abstract
Abstract A stable composition for topical steroids comprises a gel formed from propylene glycol, isopropyl alcohol or ethyl alcohol and a carboxymethylene hydrocolloid polymer, and optionally containing alkali metal metabisulfite and/or citric acid.
Inventors
- 👤 I Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:05
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/58; A61K47/00; A61K47/30; A61K47/32; A61K9/00; A61K9/0012; A61K9/0014
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
21 words
A GEL COMPOSITION COMPRISING, BY WEIGHT, ABOUT 0.01 TO 1% OF A TOPICAL STEROID SELECTED FROM THE GROUP HAVING THE FORMULA
Claim 2
Dependent Claim
21 words
A GEL COMPOSITION COMPRISING, BY WEIGHT, ABOUT 0.01 TO 1% OF A TOPICAL STEROID SELECTED FROM THE GROUP HAVING THE FORMULA
Claim 3
Dependent Claim
16 words
A composition as in claim 1 comprising in addition about 0.01 to 0.15% of citric acid.
Claim 4
Dependent Claim
12 words
A composition as in claim 1 wherein the steroid is triamcinolone acetonide.
Claim 5
Dependent Claim
38 words
A composition as in claim 3 wherein the steroid comprises 0.01 to 0.1%, the polymer comprises about 1.2%, propylene glycol and isopropyl alcohol each comprises about 20% and the alkali metal metabisulfite is sodium metabisulfite comprising about 0.1%.
Claim 6
Dependent Claim
12 words
A composition as in claim 3 comprising in addition 0.1% citric acid.
Claim 7
Dependent Claim
21 words
A composition as in claim 1 wherein the steroid is selected from the group consisting of triamcinolone acetonide, amcinafide, or amcinafal.
Claim 8
Dependent Claim
11 words
A composition as in claim 1 wherein the steroid is amcinafide.
References Cited (Backward Citations)
US3312591A
Cited
US3352753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |