Patents by Inventor Katsuhide Saito

Katsuhide Saito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Morpholinone derivatives and method of use
    Patent number: 4237132
    Abstract: A series of new 4,6-disubstituted 2-morpholinone derivatives were prepared either by a reaction of corresponding epoxide derivatives with phenylglycine derivatives or by the reaction of isopropanol derivatives with carboxylic acid derivatives. The new morpholinone derivatives are useful for the prevention or the treatment of arteriosclerosis.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: December 2, 1980
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Shoichi Chokai, Mitsuhiro Maehara, Katsuhide Saito, Takayuki Ozaki
  • Abietamide derivatives, their production and use
    Patent number: 4210671
    Abstract: A process for the preparation of amide derivatives of abietic acid, dehydroabietic acid, dihydroabietic acid or tetrahydroabietic acid which comprises reacting abietic acid, dehydroabietic acid, dihydroabietic acid or tetrahydroabietic acid or a reactive derivative thereof with an amine of the following formula:HNRR'wherein R and R' are each hydrogen, a straight chain or branched alkyl group having 3 to 15 carbon atoms, a lower alkenyl group, a cycloalkyl group, a phenyl group, a phenylalkyl group and a phenylalkyl group having a lower alkyl group at the .alpha.-position, with the proviso that such amines where both R and R' are hydrogen or where one of R and R' is hydrogen and the other is phenyl are excluded.The invention further comprises the resulting abietamide derivative reaction products, compositions containing effective blood serum cholesterol-reducing amounts of said abietamide derivatives and their use as anti-arteriosclerotic agents.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: July 1, 1980
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Kenji Sempuku, Koji Kitaguchi, Yukio Fujita, Yoshiaki Yoshikuni, Kohei Kura, Katsuhide Saito, Tamiki Mori, Yasuo Yasutomi
  • Substituted N-(carboxymethyl)-3-aminopropan-2-ol derivatives
    Patent number: 4162331
    Abstract: New carboxylic acid derivatives are proposed for use as agents in the treatment or prevention of arteriosclerosis. 1-(p-chlorophenoxy)-3-(N-phenyl-N-carbomethoxymethylamino)-2-propanol is a typical compound.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: July 24, 1979
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Shoichi Chokai, Mitsuhiro Machara, Katsuhide Saito, Takayuki Ozaki
  • Substituted N-(carboxymethyl)-3-aminopropan-2-ol derivatives
    Patent number: 4094991
    Abstract: New carboxylic acid derivatives are proposed for use as agents in the treatment of prevention of arteriosclerosis. 1-(p-chlorophenoxy)-3-(N-phenyl-N-carbomethoxymethylamino)-2-propanol is a typical compound.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: June 13, 1978
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Shoichi Chokai, Mitsuhiro Machara, Katsuhide Saito, Takayuki Ozaki
  • Substituted N-(carboxymethyl)-3-aminopropan-2-ol derivatives
    Patent number: 4064252
    Abstract: New carboxylic acid derivatives are proposed for use as agents in the treatment or prevention of arteriosclerosis. 1-(p-chlorophenoxy)-3-(N-phenyl-N-carbomethoxymethylamino)-2-propanol is a typical compound.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: December 20, 1977
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Shoichi Chokai, Mitsuhiro Maehara, Katsuhide Saito, Takayuki Ozaki
  • Abietanilides, their production and use
    Patent number: 4024280
    Abstract: Process for the preparation of abietanilides which comprises reacting abietic acid, dihydroabietic acid, tetrahydroabietic acid or a reactive derivative thereof with aniline and the products thereby produced, compositions containing the same for reducing blood serum cholesterol and method of use of such compositions.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: May 17, 1977
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Hiromu Murai, Katsuya Ohata, Hiroshi Enomoto, Kenji Sempuku, Koji Kitaguchi, Yukio Fujita, Yoshiaki Yoshikuni, Kohei Kura, Katsuhide Saito, Tamiki Mori, Yasuo Yasutomi