US4427670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin preparation
Assignee: Mitsubishi Chemical Corp
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Filing: 1982-02-10
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Granted: 1984-01-24
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Expires: 2002-02-10
Abstract
Abstract Skin preparations containing a phosphatide, a topical corticosteroid, and butylhydroxyanisole and/or butylhydroxytoluene, which may be in the form of an aqueous or oily mixture, non-aqueous, water-soluble base or suspension base. These preparations can be applied to various skin diseases including eczema, lichen, ichthyosis and psoriasis, possess improved therapeutic activities and are stable for a prolonged period of time.
Inventors
- 👤 Kunihiko Ofuchi
- 👤 Koichiro Oda
- 👤 Kenichiro Nakao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:45
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/66; A61K31/683; A61K31/685; A61K47/00; A61K47/06; A61K47/08; A61K47/10; A61K47/24; A61K9/00; A61K9/0012; A61K9/0014; A61P; A61P17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A skin preparation containing at least one topical corticosteroid selected from the group consisting of diflucortolone valerate, diflucortolone pivalate, flucortin butyl, fluocortolone, clocortolone pivalate, halcinonide, amcinonide, diflorasone diacetate, desoxymethasone, difluprednate, desonide, budesonide, prednisone, paramethasone, fludroxycortide and flunisolide, and an effective amount of a phosphatide and at least one of butylhydroxyanisole and butylhydroxytoluene to impart stability to the preparation for a prolonged period.
Claim 2
Dependent Claim
62 words
A skin preparation containing at least one topical corticosteroid selected from the group consisting of diflucortolone valerate, diflucortolone pivalate, flucortin butyl, fluocortolone, clocortolone pivalate, halcinonide, amcinonide, diflorasone diacetate, desoxymethasone, difluprednate, desonide, budesonide, prednisone, paramethasone, fludroxycortide and flunisolide, and an effective amount of a phosphatide and at least one of butylhydroxyanisole and butylhydroxytoluene to impart stability to the preparation for a prolonged period.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |