US5183663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating skin lesions
Assignee: Hercules LLC
•
Filing: 1989-06-07
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Granted: 1993-02-02
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Expires: 2009-06-07
Abstract
Abstract Disclosed is a method of treating a skin lesion comprising applying to the lesion a dry bandage comprising a gas- and moisture-permeable, flexible, thermoplastic film impregnated with a pharmaceutical.
Inventors
- 👤 Richard W. Greiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:05
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/44; A61L2300/00; A61L2300/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A dry bandage comprising a gas- and moisture-permeable, flexible thermoplastic film impregnated with a pharmaceutical that is releasable from the film into a lesion upon application thereto wherein the thermoplastic film is impregnated with the pharmaceutical by contacting the film with the pharmaceutical dissolved in a liquefied gas maintained at supercritical conditions.
Claim 2
Dependent Claim
52 words
A dry bandage comprising a gas- and moisture-permeable, flexible thermoplastic film impregnated with a pharmaceutical that is releasable from the film into a lesion upon application thereto wherein the thermoplastic film is impregnated with the pharmaceutical by contacting the film with the pharmaceutical dissolved in a liquefied gas maintained at supercritical conditions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-02 | 1996-08-03 | 1997-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-02 | 2000-08-03 | 2001-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-02 | 2004-08-03 | 2005-02-02 | $7700.00 | Window Closed / Lapsed |