Hydrophilic therapeutic material
Patent 4608249 Issued on August 26, 1986. Estimated Expiration Date: 
August 26, 2003. 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.
August 26, 2003. 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 ReferencesInventorsAssigneeApplicationNo. 06/438422 filed on 11/02/1982US Classes:424/448, Pressure sensitive adhesive means526/329.5Additional monomer is an ester derived from saturated carboxylic acidExaminersPrimary: Marantz, SidneyAssistant: Foley, Shawn P. Attorney, Agent or FirmInternational ClassA61K 9/70 (20060101)AbstractA hydrophilic therapeutic material comprising a carrier and a drug-containing patching layer formed thereon directly or indirectly, wherein said patching layer comprises a copolymer of 5 to 75% by weight of an acrylic or methacrylic ester having an ether group in the molecule, 85 to 15% by weight of an alkyl acrylate or alkyl methacrylate and 10 to 50% by weight of a polar monomer copolymerizable therewith. | |
