US4292326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treatment of hyperpigmentary dermatoses
Assignee: Bayer Pharma AG
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Filing: 1978-12-01
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Granted: 1981-09-29
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Expires: 1998-12-01
Abstract
Abstract There is disclosed a composition for the treatment of acne, hyperpigmentary dermatoses or skin hyperpigmentation which contains dicarboxylic acids containing 7 to 13 carbon atoms or certain derivatives thereof that contain reducing functional group or a salt thereof. There are also disclosed methods for preparing mercapto derivatives of these dicarboxylic acids.
Inventors
- 👤 Marcella Nazzaro-Porro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:44
CPC Classifications
A; A61; A61Q; A61Q19/00; A61Q19/02; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/20; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/362; C; C07; C07C; C07C51/00; C07C51/347; C07C51/363
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
73 words
A method for the treatment of individuals exhibiting noncancerous or non-precancerous hyperpigmentary dermatoses which comprises administering to said individual a therapeutically effective amount of an active ingredient in a pharmaceutically acceptable carrier until said condition is reduced or its further development is arrested wherein said active ingredient is at least one dicarboxylic acid containing from 7 to 13 carbon atoms or a mono or dimercapto derivative of said acid or a salt thereof.
Claim 2
Independent Claim
73 words
A method for the treatment of individuals exhibiting noncancerous or non-precancerous hyperpigmentary dermatoses which comprises administering to said individual a therapeutically effective amount of an active ingredient in a pharmaceutically acceptable carrier until said condition is reduced or its further development is arrested wherein said active ingredient is at least one dicarboxylic acid containing from 7 to 13 carbon atoms or a mono or dimercapto derivative of said acid or a salt thereof.
Claim 3
Dependent Claim
33 words
A method as defined in claim 1 wherein said dicarboxylic acid is selected from the group consisting of pimelic acid, suberic acid, sebacic acid, azelaic acid, 1,9-nonanedicarboxylic acid, 1,10-decanedicarboxylic acid, and 1,11-undecanedicarboxylic acid.
Claim 4
Dependent Claim
14 words
A method as defined in claim 1 wherein said individual exhibits a chloasma condition.
Claim 5
Dependent Claim
16 words
A method as defined in claim 1 wherein said individual exhibits a poikiloderma of Civatte condition.
Claim 6
Dependent Claim
13 words
A method as defined in claim 1 wherein said acid is administered orally.
Claim 7
Dependent Claim
14 words
A method as defined in claim 1 wherein said acid is administered by injection.
Claim 8
Dependent Claim
13 words
A method as defined in claim 1 wherein said acid is administered topically.
Claim 9
Dependent Claim
14 words
A method as defined in claim 1 wherein said dicarboxylic acid is azelaic acid.
Claim 10
Dependent Claim
14 words
A method as defined in claim 1 wherein said dicarboxylic acid is 1,10-decanedicarboxylic acid.
References Cited (Backward Citations)
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US2657231A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |