US4341783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Topical use of dyphylline and dyphylline containing compositions
Assignee: Lemmon Co
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Filing: 1980-07-31
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Granted: 1982-07-27
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Expires: 2000-07-31
Abstract
Abstract Dyphylline is used preferably as the active ingredient in a cream base for topical application to the skin in the treatment of psoriasis and atopic dermatitis. The invention involves the method of use of dyphylline, as well as dyphylline containing compositions.
Inventors
- 👤 Stanley Scheindlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:10
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; A61K31/519; A61K31/52
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
17 words
A method of treating psoriasis comprising applying directly to the psoriasis lesions an effective amount of dyphylline.
Claim 2
Independent Claim
17 words
A method of treating psoriasis comprising applying directly to the psoriasis lesions an effective amount of dyphylline.
Claim 3
Independent Claim
21 words
A method of treating atopic dermatitis comprising applying directly to the affected portions of the skin an effective amount of dyphylline.
Claim 4
Independent Claim
21 words
A method of treating atopic dermatitis comprising applying directly to the affected portions of the skin an effective amount of dyphylline.
Claim 5
Dependent Claim
22 words
A dyphylline containing composition for topical treatment of psoriasis or atopic dermatitis, comprising a cream base including an effective amount of dyphylline.
Claim 6
Dependent Claim
22 words
A dyphylline containing composition for topical treatment of psoriasis or atopic dermatitis, comprising a cream base including an effective amount of dyphylline.
Claim 7
Dependent Claim
38 words
The composition of claim 3, which comprises the following: Dyphylline: 10.0% Stearic Acid: 15.0% Cetyl Alcohol: 5.0% Petrolatum, White: 3.0% Polyoxyl 40 Stearate: 9.0% Sorbitol Solution: 7.5% Propylene Glycol: 7.5% Methylparaben: 0.025% Propylparaben: 0.015% Purified Water q.s.: 100.0%
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) | 1985-07-26 | 1986-01-25 | 1986-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-26 | 1990-01-25 | 1990-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-26 | 1994-01-25 | 1994-07-27 | $7700.00 | Window Closed / Lapsed |