Patent US5731298A successfully refreshed from Google Patents.
US5731298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the treatment of scars and keloids
Assignee: Individual
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Filing: 1992-12-24
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Granted: 1998-03-24
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Expires: 2012-12-24
Abstract
Abstract A method and a pharmaceutical composition for non-topical wound, scar and keloid treatment is described which contains cross-linked glycosaminoglycans and conventional pharmaceutical auxiliary and/or carrier substances. The pharmaceutical composition is preferably administered intralesionally e.g. by injection in the form of a gel containing water. The cross-linked glycosaminoglycans are also suitable for use as cosmetics and skin care products.
Inventors
- 👤 Johannes Reinmuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:16
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/715
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
57 words
A method for treating a pre-existing scar or pre-existing keloid comprising injecting a composition comprising a pharmaceutically effective amount of a cress-linked hyaluronic acid in combination with a pharmaceutically acceptable carrier into the pre-existing scar or pre-existing keloid, wherein the pharmaceutically effective amount of a cross-linked hyaluronic acid is 0.1% to 20% by weight of the composition.
Claim 2
Independent Claim
57 words
A method for treating a pre-existing scar or pre-existing keloid comprising injecting a composition comprising a pharmaceutically effective amount of a cress-linked hyaluronic acid in combination with a pharmaceutically acceptable carrier into the pre-existing scar or pre-existing keloid, wherein the pharmaceutically effective amount of a cross-linked hyaluronic acid is 0.1% to 20% by weight of the composition.
Claim 3
Dependent Claim
28 words
A method for treating a scar or keloid according to claim 1, wherein said cross-linked hyaluronic is cross-linked by chemical cross-linking, chelate formation, complex formation or salt formation.
Claim 4
Dependent Claim
22 words
A method for treating a scar or keloid according to claim 1, wherein said cross-linked hyaluronic acid is cross-linked by chemical cross-linking.
References Cited (Backward Citations)
US4350629A
Cited
GB2129300A
Cited
US4613502A
Cited
US4863907A
Cited
US4582865A
Cited
US4947840A
Cited
WO1989004172A1
Cited
US5093319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-23 | 2001-09-22 | 2002-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-23 | 2005-09-22 | 2006-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-23 | 2009-09-22 | 2010-03-24 | $7700.00 | Window Closed / Lapsed |