U.S. patents available from 1976 to present.
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Cryogel bandage containing therapeutic agent

Patent 5260066 Issued on November 9, 1993. Estimated Expiration Date: Icon_subject January 16, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Material for wound healing
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Freeze-dried polyvinyl alcohol gel
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Protective skin matrix
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Inventor: Keith ,   et al.

Dressing material based on a hydrogel, and a process for its production
Patent #: 4552138
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Process for preparing a hydrogel
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Inventor: Nambu

Compositions and method of controlling transdermal penetration of topical and systemic agents
Patent #: 4692462
Issued on: 09/08/1987
Inventor: Banerjee

Transdermal therapeutic composition
Patent #: 4781926
Issued on: 11/01/1988
Inventor: Hyon ,   et al.

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Inventors

Application

No. 821627 filed on 01/16/1992

US Classes:

424/447, Bandages with incorporated medicaments424/443, Web, sheet or filament bases; compositions of bandages; or dressings with incorporated medicaments424/445, Dressings424/486Synthetic polymer

Examiners

Primary: Page, Thurman K.
Assistant: Phelan, D. Gabrielle

Attorney, Agent or Firm

Foreign Patent References

  • 1-299216 JP. 12/13/1989
  • 1-299228 JP. 12/13/1989

International Class

A61L 015/16

Abstract

A controlled-release bandage containing therapeutic agents in a poly(vinyl alcohol) cryogel is disclosed. The bandage may include particulate absorbants such as ion exchange resins and hydrophobic particles to further insure controlled and constant release of therapeutic agents. The bandage may also include plasticizing agents to provide softness in the event of drying the bandage.

Other References

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