US4346109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating keratotic skin disease
Assignee: Eisai Co Ltd
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Filing: 1981-03-30
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Granted: 1982-08-24
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Expires: 2001-03-30
Abstract
Abstract A compound, 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid, and a salt thereof are disclosed as a therapeutic agent for treatment of skin diseases with keratinization.
Inventors
- 👤 Isao Yamatsu
- 👤 Yuichi Inai
- 👤 Shinya Abe
- 👤 Takeshi Suzuki
- 👤 Yoshikazu Suzuki
- 👤 Osamu Tagaya
- 👤 Nozomu Koyanagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:57
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/20; A61K31/202; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/361; A61K9/00; A61K9/14; A61K9/16; A61K9/1605; A61K9/1629; A61K9/1652; A61P; A61P17/00; C; C07; C07C; C07C317/00; C07C317/44; C07C57/00; C07C57/02; C07C57/03; C07C69/00; C07C69/52; C07C69/587
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
36 words
A method for the treatment of skin disease with keratinization, which comprises administering to a subject requiring such treatment a therapeutically effective amount of 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid of the formula: ##STR2## or a pharmaceutically acceptable salt thereof.
Claim 2
Independent Claim
36 words
A method for the treatment of skin disease with keratinization, which comprises administering to a subject requiring such treatment a therapeutically effective amount of 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid of the formula: ##STR2## or a pharmaceutically acceptable salt thereof.
Claim 3
Dependent Claim
33 words
A method according to claim 1, wherein a dosage of from 40 mg to 4 g per day of said 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid or pharmaceutically acceptable salt thereof is administered to an adult patient.
Claim 4
Dependent Claim
16 words
A method according to claim 1, wherein said 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid or salt thereof is administered orally.
Claim 5
Dependent Claim
17 words
A method according to claim 1, wherein said 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid or salt thereof is administered by injection.
Claim 6
Dependent Claim
16 words
A method according to claim 1, wherein said 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid or salt thereof is administered topically.
Claim 7
Dependent Claim
18 words
A method according to claim 1, wherein said 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid or salt thereof is administered by a suppository.
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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |