Patents Assigned to Dai-Ich Kogyo Seiyaku Co., Ltd.
  • Stabilized fuel slurry
    Patent number: 4195975
    Abstract: A fuel slurry comprising a mixture of a fuel oil and pulverized coal may be effectively stabilized with a small amount of a condensation product of a sulfonated benzene or naphthalene derivative-formaldehyde, ligninsulfonic acid, carboxymethylcellulose, carboxymethyl-starch or a salt thereof.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: April 1, 1980
    Assignee: Dai-Ich Kogyo Seiyaku Co., Ltd.
    Inventors: Yasumasa Hamuro, Akihiro Naka, Shuichi Honjo