US3867528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steroidal topical cream base
Assignee: Wyeth Holdings LLC
•
Filing: 1973-10-11
•
Granted: 1975-02-18
•
Expires: 1993-10-11
Abstract
Abstract A topical cream base is described which is particularly useful with steroids. This cream base when used with steroid acetonides produces greater penetration of the skin and therefore enhances the therapeutic activity.
Inventors
- 👤 Lawrence Ritter
- 👤 Robert Arnold Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:50
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0014
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
19 words
A NEW COMPOSITION OF MATTER COMPRISING A TOPICAL CREAM BASE PROVIDING ENHANCED PENETRATION OF STEROIDS OF THE FOLLOWING FORMULATION:
Claim 2
Dependent Claim
19 words
A NEW COMPOSITION OF MATTER COMPRISING A TOPICAL CREAM BASE PROVIDING ENHANCED PENETRATION OF STEROIDS OF THE FOLLOWING FORMULATION:
Claim 3
Dependent Claim
14 words
A composition in accordance with claim 1, in which the steroid is triamcinolone acetonide.
Claim 4
Dependent Claim
22 words
A composition in accordance with claim 1, in which the steroid is 16 Alpha , 17 Alpha -cyclopentylidenedioxy-9 Alpha -fluoro-11 Beta ,21-dihydroxy-1,4-pregnadiene-3,20-dione.
Claim 5
Dependent Claim
14 words
A composition in accordance with claim 1, in which the steroid is triamcinolone acetonide-21-valerate.
Claim 6
Dependent Claim
21 words
A composition in accordance with claim 1, in which the steroid is 16 Alpha ,17 Alpha -cyclopentylidenedioxy-9 Alpha -fluoro-11 Beta ,21-dihydroxy-1,4-pregnadiene-3,20-dione-21-acetate.
Claim 7
Dependent Claim
15 words
A new composition of matter in accordance with claim 1, having substantially the following formulation:
Claim 8
Independent Claim
16 words
A method for obtaining increased topical absorption of steroids which comprises topically administering the following formulation:
Claim 9
Independent Claim
16 words
A method for obtaining increased topical absorption of steroids which comprises topically administering the following formulation:
References Cited (Backward Citations)
US3592930A
Cited
US3829570A
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 |