US4826677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceutical material for the treatment of psoriasis
Assignee: Roehm Pharma GmbH
•
Filing: 1987-04-02
•
Granted: 1989-05-02
•
Expires: 2007-04-02
Abstract
Abstract The invention relates to pharmaceutical materials for local and non-irritating therapy for psoriasis, containing antipsoriatic ingredients. The pharmaceutical material is a liquid preparation of film-forming polymers and antipsoriatic ingredients, with which the psoriasis affected skin area can be covered and treated in situ with a medicated film or foil formed at the treatment site. Dithranol and/or glucocorticoid in combination with keratolytically acting urea are preferred for use as antipsoriatic ingredients.
Inventors
- 👤 Josef Mueller
- 👤 Hans-Ulrich Petereit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:28
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/70; A61K9/7015
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
69 words
A pharmaceutical material for topical treating of psoriasis, consisting essentially of: a liquid preparation of 5-70 wt.% of at least one film-forming polymer selected from the group consisting of polyethylene, polyurethane, polyvinyl chloride, polyvinyl alcohol, polyvinyl acetate, poly(meth)acrylate and copolymers thereof and at least one anti-psoriatic compound, wherein a thin, well adhering film is formed by said preparation, said film being removable by pulling it from the treated area.
Claim 2
Dependent Claim
69 words
A pharmaceutical material for topical treating of psoriasis, consisting essentially of: a liquid preparation of 5-70 wt.% of at least one film-forming polymer selected from the group consisting of polyethylene, polyurethane, polyvinyl chloride, polyvinyl alcohol, polyvinyl acetate, poly(meth)acrylate and copolymers thereof and at least one anti-psoriatic compound, wherein a thin, well adhering film is formed by said preparation, said film being removable by pulling it from the treated area.
Claim 3
Dependent Claim
18 words
The pharmaceutical materials of claim 1, werehin said film-forming polymer is polyvinyl alcohol or poly(meth)acrylate or copolymer thereof.
Claim 4
Dependent Claim
23 words
The pharmaceutical material of claim 1, wherein said liquid preparation is a solution comprising a solvent, said film-forming polymer and said antipsoriatic compound.
Claim 5
Dependent Claim
29 words
The pharmaceutical material of claim 1 wherein said liquid preparation is a dispersion of said film-forming polymer and wherein said antipsoriatic compound is dissolved or suspended in said dispersion.
Claim 6
Dependent Claim
17 words
The pharmaceutical material of claim 1, said film-forming polymer comprises about 1-70 wt.% of said liquid preparation.
Claim 7
Dependent Claim
19 words
The pharmaceutical material of claim 5, wherein said film-forming polymer comprises between about 10-50 wt.% of said liquid preparation.
Claim 8
Dependent Claim
21 words
The pharmaceutical material of claim 1, wherein sa.id film-forming polymer is capable of forming of a water or vapor permeable film.
Claim 9
Dependent Claim
27 words
The pharmaceutical material of claim 1, wherein said liquid preparation comprises from about 0.01-20 wt.% of said antipsoriatic compound, calculated according to the dry film forming polymer.
Claim 10
Dependent Claim
9 words
The pharmaceutical material of claim 1, further comprising urea.
Claim 11
Dependent Claim
15 words
The pharmaceutical material of claim 9, wherein said urea is present in a uniform distribution.
Claim 12
Dependent Claim
23 words
The pharmaceutical material of claim 10, wherein said urea is present in amounts of about 50-250 times the weight of said antipsoriatic compound.
Claim 13
Dependent Claim
18 words
The pharmaceutical material of claim 1, wherein said antipsoriatic compound comprises a glucocorticoid, dithranol or a mixture thereof.
References Cited (Backward Citations)
US4007271A
Cited
GB1504007A
Cited
US4496588A
Cited
WO1983000084A1
Cited
FR2515045A1
Cited
GB2116423A
Cited
GB2145627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |