Patents Assigned to Zenyaku Kogyo Kabushiki Kaisha
  • Patent number: 4410724
    Abstract: There is provided a process for production of o-(2,6-dichloroanilino)phenylacetic acid or a salt thereof by reacting o-chlorophenylacetic acid or an alkali metal salt thereof with 2,6-dichloroaniline in the presence of a base and at least 0.5 mol of a copper catalyst per mol of o-chlorophenylacetic acid in a polar solvent.
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: October 18, 1983
    Assignee: Zenyaku Kogyo Kabushiki Kaisha
    Inventors: Muneaki Takase, Tadahiro Nakamura, Kazuo Kamiya, Toshiyuki Takezawa, Hiroaki Yamazaki, Takashi Iwaki
  • Patent number: 4320120
    Abstract: New extracts of Marsdenia cundurango Reichenbach fil., processes for preparing them, antitumor agents comprising them, compositions containing them and methods of treating tumor with them are described herein in which the extracts consist essentially of the portion of Marsdenia cundurango Reichenbach fil. which is soluble in lower alcohols and in chlorinated hydrocarbons other than carbon tetrachloride and insoluble in carbon tetrachloride or aromatic hydrocarbons.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: March 16, 1982
    Assignee: Zenyaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Mitsuhashi, Den-ichi Mizuno, Koji Hayashi, Shigeru Abe, Muneaki Takase, Toshiharu Narita
  • Patent number: 4044713
    Abstract: A coating apparatus for manufacturing of solid particles with digestive tracts-soluble film by rolling water-containing solid particles at high speed, adding a coating liquid and drying them simultaneously. Particles are disposed in a generally annular volume and supported on a generally rotary disk which is closely confined within a fixed cylinder and closely spaced from an inner fixed cylinder; said cylinder forming said annular volume. Partition means adjustably spaced from said plate, divide said volume into separate coating, water feed and drying chambers. The partitions form a sealing relationship with the particles.
    Type: Grant
    Filed: August 29, 1975
    Date of Patent: August 30, 1977
    Assignee: Zenyaku Kogyo Kabushiki Kaisha
    Inventor: Muneaki Takase
  • Patent number: 3968277
    Abstract: A coating process and apparatus for manufacturing of solid particles with digestive tracts-soluble film by rolling water-containing solid particles at high speed, adding a coating liquid and drying them simultaneously.
    Type: Grant
    Filed: February 20, 1974
    Date of Patent: July 6, 1976
    Assignee: Zenyaku Kogyo Kabushiki Kaisha
    Inventor: Muneaki Takase