Patents by Inventor Youichi Uosaki

Youichi Uosaki 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).

  • Interleukin-1 production inhibiting compound
    Patent number: 5804599
    Abstract: Provided is an Interleukin-1 production inhibiting compound represented by formula (I) ##STR1## wherein R denotes 4-methyl-1-pentenyl, 5-methyl-1,3-heptadienyl or 1-methylpentanyl.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: September 8, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Takeo Tanaka, Eiji Tsukuda, Keiko Ochiai, Katsuhiko Ando, Hidemasa Kondo, Youichi Uosaki, Yutaka Saitoh, Yuzuru Matsuda, Fumito Koizumi, Tsutomu Agatsuma
  • Process for producing disaccharides and novel disaccharides
    Patent number: 5776739
    Abstract: A process for producing a disaccharide which comprises: conducting the condensation reaction of .beta.-glucose-1-phosphate with a monosaccharide in an aqueous medium in the presence of an enzyme source which is derived from a microorganism belonging to the genus Catellatospora, Kineosporia, Propionibacterium, or Enterococcus and which has sugar phosphorylase activity; and recovering the disaccharide formed in the aqueous medium, as well as a novel disaccharide obtained by the process. The disaccharide obtained by the present invention is useful as a stabilizer for medicine, food, cosmetic and enzyme.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: July 7, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kazuo Aisaka, Yutaka Saitoh, Youichi Uosaki
  • Compound GEX1
    Patent number: 5719179
    Abstract: Disclosed is Compound GEX1 of formula (I), having excellent antitumor activity: ##STR1## wherein R.sup.1 represents hydroxy or ##STR2## R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen or hydroxy; R.sup.5 represents hydroxyl or lower alkoxy; provided that when R.sup.1 is hydroxy and R.sup.5 is methoxy, then at least one of R.sup.2, R.sup.3 and R.sup.4 is the group except for hydrogen, and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: February 17, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tamio Mizukami, Yasushi Sakai, Tetsuo Yoshida, Youichi Uosaki, Keiko Ochiai, Shiro Akinaga
  • UCH15 compounds
    Patent number: 5717110
    Abstract: This invention relates to UCH15 compounds of the formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a hydroxyl group.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: February 10, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tamio Mizukami, Akira Asai, Yoshinori Yamashita, Hirofumi Nakano, Shingo Kakita, Youichi Uosaki, Keiko Ochiai, Tadashi Ashizawa, Akira Mihara
  • Substance DC114-A1
    Patent number: 5536850
    Abstract: The present invention relates to a novel substance DC114-A1 represented by the following formula (I): ##STR1##
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: July 16, 1996
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hirofumi Nakano, Noboru Fujii, Tamio Mizukami, Youichi Uosaki, Katsunori Kita, Eiji Kobayashi
  • Compound UCE6
    Patent number: 5366966
    Abstract: A compound represented by formula (I): ##STR1## or a pharmaceutically acceptable salt thereof is provided, which has an excellent antitumor activity.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: November 22, 1994
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hirofumi Nakano, Noboru Fujii, Yoshinori Yamashita, Youichi Uosaki, Shigeru Chiba, Shigeo Katsumata, Yukari Tsuji
  • Pyrroloindole derivatives
    Patent number: 5187186
    Abstract: DC-88A derivatives represented by the general formula: ##STR1## wherein X represents hydrogen or CO.sub.2 R.sup.1 (in which R.sup.1 represents hydrogen, a straight-chain or branched alkyl having 1 to 4 carbon atoms, allyl, or benzyl); and ##STR2## have an excellent anti-tumor activity and are useful as anti-tumor agents.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: February 16, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yutaka Kanda, Youichi Uosaki, Hiromitsu Saito, Hiroshi Sano, Eiji Kobayashi, Makoto Morimoto, Satoru Nagamura
  • Pyrroloindole derivatives related to DC-88A compound
    Patent number: 5070092
    Abstract: DC-88A derivatives represented by the general formula: ##STR1## wherein X represents hydrogen or CO.sub.2 R.sup.1 (in which R.sup.1 represents hydrogen, a straight-chain or branched alkyl having 1 to 4 carbon atoms, allyl, or benzyl); and ##STR2## have an excellent anti-tumor activity and are useful as anti-tumor agents.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: December 3, 1991
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yutaka Kanda, Youichi Uosaki, Hiromitsu Saito, Hiroshi Sano, Eiji Kobayashi, Makoto Morimoto, Satoru Nagamura