US4325965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agent for preventing or treating psoriasis
Assignee: Eisai Co Ltd
•
Filing: 1980-10-20
•
Granted: 1982-04-20
•
Expires: 2000-10-20
Abstract
Abstract Psoriasis is treated with δ-tocopherol or ester thereof.
Inventors
- 👤 Ryoichi Chiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:30
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/58; C07D311/70; C07D311/72; A; A61; A61K; A61K31/00; A61K31/33; A61K31/335; A61K31/35; A61K31/352; A61K31/353; A61K31/355; A61P; A61P17/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
37 words
A method for treating psoriasis which comprises topically applying to a patient affected with psoriasis a composition including as the principal active ingredient, an effective amount of δ-tocopherol, dispersed or dissolved in a pharmaceutically acceptable topical carrier.
Claim 2
Independent Claim
37 words
A method for treating psoriasis which comprises topically applying to a patient affected with psoriasis a composition including as the principal active ingredient, an effective amount of δ-tocopherol, dispersed or dissolved in a pharmaceutically acceptable topical carrier.
Claim 3
Dependent Claim
28 words
A method as claimed in claim 1 in which the amount of said active ingredient is from 0.1 to 5 wt.%, based on the weight of said composition.
Claim 4
Dependent Claim
28 words
A method as claimed in claim 1 in which the amount of said active ingredient is from 0.5 to 3 wt.%, based on the weight of said composition.
Claim 5
Dependent Claim
26 words
A method as claimed in claim 1 in which the amount of said active ingredient is about 0.5 wt.%, based on the weight of said composition.
Claim 6
Dependent Claim
15 words
A method as claimed in claim 1 in which said principal active ingredient is d-δ-tocopherol.
References Cited (Backward Citations)
US4181725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |