Composite of a disperesed gel in an adhesive matrix
Patent 5270358 Issued on December 14, 1993. Estimated Expiration Date: 
June 25, 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.
June 25, 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 ReferencesMicrophase separated hydrogels for controlled release of bioactive materials Adhesive composites for biomedical electrodes Pressure-sensitive hydrophilic laminate structures for use in wound dressing, transdermal and topical drug delivery Radiation-curable pressure-sensitive adhesive having improved adhesion to plasticized vinyl substrates Bioelectrical electrode Patent #: 5024227 InventorApplicationNo. 905490 filed on 06/25/1992US Classes:524/55, Gum or derivative424/448, Pressure sensitive adhesive means524/56, Disaccharide or trisaccharide, e.g., sucrose, etc.524/503, Polyvinyl alcohol or modified form thereof524/516, Solid polymer derived from nitrogen heterocycle monomer524/522, Solid polymer derived from carboxylic acid-containing monomer525/57With solid polymer derived from ethylenic reactants onlyExaminersPrimary: Michl, Paul R.Assistant: Niland, P. Attorney, Agent or FirmForeign Patent References
International ClassesA61F 013/02C08J 003/00 C08K 005/15 C08L 005/00 AbstractA composite of a gel of swollen hydrocolloid dispersed in a pressure sensitive adhesive matrix is provided. The gel has a natural or synthetically derived hydrocolloid swollen with a non-volatile swelling agent, such that the gel may have a shear modulus of less than 6.2×106 dynes/cm2. The gel-adhesive composite has continued skin adhesion whether applied to or existing in dry or moist skin conditions. The gel contributes a high moisture vapor transmission rate to attempt to maintain dry skin conditions while the adhesive maintains skin adhesion. The gel-adhesive composite may be used in a variety of tape, dressing, bandage, drape, or other skin contacting usage and may optionally include antimicrobial agents to treat the skin while adhesion continues.Other References
Field of SearchSolid polymer derived from nitrogen heterocycle monomerPolyvinyl alcohol or modified form thereof Disaccharide or trisaccharide, e.g., sucrose, etc. Gum or derivative Solid polymer derived from carboxylic acid-containing monomer Solid polymer derived from carboxylic acid ester monomer Solid block or solid block-type copolymer with other solid polymer, SICP or SPFI With solid polymer derived from at least one Si-H or Si-C reactant wherein at least one of the reactants forming the solid polymer is saturated; or with SPFI or SICP derived from a Si-H or Si-C reactant wherein at least one of the necessary reactants is saturated With solid polymer derived from ethylenic reactants only Pressure sensitive adhesive means | |
