Patents Assigned to Kohryu Industrial Co. Ltd.
  • Patent number: 4469615
    Abstract: A water treating composition comprising a water-soluble copolymer consisting of, as the components, (A) an addition reaction product of a glycidyl ether or glycidyl ester and an .alpha.,.beta.-ethylenically unsaturated carboxylic acid and (B) another vinyl monomer. In one embodiment, the water treating composition further comprises one or more conventional corrosion preventing/inhibiting agents.
    Type: Grant
    Filed: November 9, 1982
    Date of Patent: September 4, 1984
    Assignees: Kohryu Industrial Co. Ltd., Toagosei Chemical Industrial Co.
    Inventors: Setsuo Tsuruoka, Iehito Tasaka, Yuji Kawamura, Shizuo Kimata, Tatsuki Wabiko