Patents Assigned to Toa Eiyo Litd.
  • Hydrophilic therapeutic material
    Patent number: 4608249
    Abstract: A 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.
    Type: Grant
    Filed: November 2, 1982
    Date of Patent: August 26, 1986
    Assignees: Nitto Electric Industrial Co., Ltd., Toa Eiyo Litd.
    Inventors: Saburo Otsuka, Toshiyuki Yoshikawa, Shoichi Tokuda, Yuusuke Ito