Patents Assigned to Tokyo Organic Chemical Industries, Ltd.
  • Carbonaceous adsorbent for removal of pyrogen from water
    Patent number: 5166123
    Abstract: A carbonaceous adsorbent to be used for the removal of a pyrogen dissolved in water is disclosed. The adsorbent is obtained by carbonizing porous beads of a cross-linked polymer. This adsorbent is favorably used for the removal of endotoxin in the production of pure water from deionized water resulting from the treatment with ion-exchange resins.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: November 24, 1992
    Assignee: Tokyo Organic Chemical Industries, Ltd.
    Inventors: Wataru Agui, Shuji Tamura, Hiroshi Kuyama, Yoshiya Kurachi, Masahiko Abe, Yukihiro Kaneko, Keizo Ogino
  • Carbonaceous adsorbent for removal of pyrogen and method of producing pure water using same
    Patent number: 5021391
    Abstract: A carbonaceous adsorbent to be used for the removal of a pyrogen dissolved in water is disclosed. The adsorbent is obtained by carbonizing porous beads of a cross-linked polymer. This adsorbent is favorably used for the removal of endotoxin in the production of pure water from deionized water resulting from the treatment with ion-exchange resins.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: June 4, 1991
    Assignee: Tokyo Organic Chemical Industries, Ltd.
    Inventors: Wataru Agui, Shuji Tamura, Hiroshi Kuyama, Yoshiya Kurachi, Masahiko Abe, Yukihiro Kaneko, Keizo Ogino
  • Carbonaceous adsorbent for removal of pyrogen and method of producing pure water using same
    Patent number: 4883596
    Abstract: A carbonaceous absorbent to be used for the removal of a pyrogen dissolved in water is disclosed. The absorbent is obtained by carbonizing porous beads of a cross-linked polymer. This absorbent is favorably used for the removal of endotoxin in the production of pure water from deionized water resulting from the treatment with iron-exchange resins.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: November 28, 1989
    Assignee: Tokyo Organic Chemical Industries, Ltd.
    Inventors: Wataru Agui, Shuji Tamura, Hiroshi Kuyama, Yoshiya Kurachi, Masahiko Abe, Yukihiro Kaneko, Keizo Ogino
  • Metal salt of N-substituted alkylenebisdithiocarbamic acid
    Patent number: 4315846
    Abstract: This application relates to novel metal salts of N-substituted alkylenebisdithiocarbamic acids and their use as agricultural fungicides.
    Type: Grant
    Filed: March 26, 1980
    Date of Patent: February 16, 1982
    Assignee: Tokyo Organic Chemical Industries, Ltd.
    Inventors: Masuo Kuchikata, Hiroshi Tsuyuki, Toshio Furukawa, Yoshihiro Nitta, Hiroshi Kuyama