Patents by Inventor Yasuhiko Hamazaki

Yasuhiko Hamazaki 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).

  • Patent number: 5102794
    Abstract: Substance F-0368 of the formula: ##STR1## or salts thereof is prepared by culturing Kitasatosporia sp. F-0368 in a culture medium thereby producing substance F-0368, and then isolating and collecting substance F-0368 from the culture medium.
    Type: Grant
    Filed: January 14, 1991
    Date of Patent: April 7, 1992
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Ryusuke Taguchi, Hideo Sugawara, Yukio Miyazaki, Taku Mizuno, Masahide Nomura, Machiko Sugiyama, Hideo Saito, Goro Yabuta, Akiya Furuichi, Yasuhiko Hamazaki, Katsuhiro Nakamura
  • Patent number: 5032611
    Abstract: Disclosed in the present invention are: a substance F-0368 or salts thereof having the following structural formula ##STR1## a method for production of the substance F-0368 or salts thereof, wherein an F-0368-substance-producing-microorganism belonging to a genus Kitasatosporia is cultured, and the substance F-0368 is isolated and collected from the cultured substance; a method for production of the substance F-0368 or salts thereof, wherein 3-methyl-4-lower alkoxy carbonyl-2(5H)-furanone represented by the following general formula is subjected to hydrolytic reaction ##STR2## (where: R represents a straight or branched lower alkyl group having 1 to 6 carbon atoms); a composition which consists essentially of the substance F-0368 or salt thereof, a diluent permissible in the agricultural chemicals, and a carrier or an excipient; a preventive agent for plant diseases such as rice blast disease and bacterial leaf blight disease, which consists essentially of an effective amount of the substance F-0368 or salts
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: July 16, 1991
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Ryusuke Taguchi, Hideo Sugawara, Yukio Miyazaki, Taku Mizuno, Masahide Nomura, Machiko Sugiyama, Hideo Saito, Goro Yabuta, Akiya Furuichi, Yasuhiko Hamazaki, Katsuhiro Nakamura
  • Patent number: 4318923
    Abstract: Benzaminoethylphenoxycyclohexylacetic acid derivatives having the formula ##STR1## wherein R.sup.1 represents hydrogen atom, a halogen atom, hydroxyl group, a lower alkyl group or a lower alkoxy group; n is 1 or 2; and R.sup.2 represents hydrogen atom, a lower alkyl group which can have a substituent of phenyl group, a lower alkoxycarbonyl group, 3,3,5-trimethylcyclohexyloxycarbonyl group or a heterocyclic group; hexadecyl group; phenyl group which can have a substituent of a lower alkyl group, a lower alkoxy group, a lower alkoxycarbonyl group or a halogen atom; a cyclohexyl group or .alpha.-[4-(4-chlorobenzaminoethyl) phenoxy]-.alpha.-cyclohexylacetoxycyclohexyl group a antihyperlipidemic compositions thereof.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: March 9, 1982
    Assignee: Kaken Chemical Co., Ltd.
    Inventors: Yasuhiko Hamazaki, Nobuo Ishiyama, Toshiyuki Yamamoto, Kenji Seri, Reiko Sato
  • Patent number: 4278678
    Abstract: Novel substituted oxy-cyclohexylacetic acid derivatives as antihyperlipidemic agents are given. The compounds have the formula ##STR1## wherein n is 1 or 2; m is 0, 1 or 2; R.sub.1 represents a halogen atom, trifluoromethyl, a lower alkyl, a lower alkoxy, a lower alkylcarbonyl, dimethylphenylmethyl, cyclohexyl, phenyl, halogenophenyl, phenoxy or halogenophenoxy group, and two of R.sub.1 groups can be bonded to form an orthocondensed saturated alkylene ring; Hal represents a halogen atom; and R.sub.2 represents a hydrogen atom or a lower alkyl group.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: July 14, 1981
    Assignee: Kaken Chemical Co., Ltd.
    Inventors: Yasuhiko Hamazaki, Kenji Seri, Nobuo Ishiyama, Toshiyuki Yamamoto, Masao Sakasai, Reiko Sato
  • Patent number: 4153724
    Abstract: Benzoyl phenoxy acetic acid derivatives having the formula ##STR1## wherein R.sub.1 represents hydrogen or halogen atom or a lower alkyl group or a lower alkoxyl group; and R.sub.2 represents hydrogen atom or a lower alkyl group which impart excellent antihyperlipidemic activity are provided.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: May 8, 1979
    Assignee: Kaken Chemical Co., Ltd.
    Inventors: Yasuhiko Hamazaki, Toshiyuki Yamamoto, Shozo Kawabata, Kenji Seri, Masao Sakasai, Reiko Sato, Nobuo Ishiyama
  • Patent number: 4145444
    Abstract: Anti-inflammatory agent comprises an active ingredient of benzoyl derivative having the formula ##STR1## WHEREIN R.sub.1 represents hydrogen, hydroxy, C.sub.1-8 alkyl or C.sub.1-8 alkoxy,R.sub.2 represents hydrogen, halogen, hydroxy, vinyl, C.sub.1-8 alkyl or C.sub.1-8 alkoxy,A represents carbonyl, methylene or a single bond, andN is an integer of 1 to 4.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: March 20, 1979
    Assignee: Kaken Chemical Co., Ltd.
    Inventors: Yasuhiko Hamazaki, Shozo Kawabata, Toshiyuki Yamamoto, Yasuo Shiraishi, Akira Ueno
  • Patent number: 4124726
    Abstract: Anti-inflammatory agent comprises an active ingredient of benzoyl derivative having the formula ##STR1## WHEREIN R.sub.1 represents hydrogen, halogen, hydroxy, C.sub.1-8 alkyl or C.sub.1-8 alkoxy,R.sub.2 represents hydrogen, halogen, hydroxy, vinyl, C.sub.1-8 alkyl or C.sub.1-8 alkoxy,A represents carbonyl, methylene or a single bond, andn is an integer of 1 to 4.
    Type: Grant
    Filed: December 28, 1976
    Date of Patent: November 7, 1978
    Assignee: Kaken Chemical Co., Ltd.
    Inventors: Yasuhiko Hamazaki, Shozo Kawabata, Toshiyuki Yamamoto, Yasuo Shiraishi, Akira Ueno, Koji Amemiya, Katsumas Saga