Patents by Inventor Hideki Utsugi

Hideki Utsugi 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).

  • Process for producing nucleosides
    Patent number: 5506122
    Abstract: The present invention concerns a process for producing nucleosides by carrying out the reaction of a base donor, a saccharide residue donor and a phosphoric acid donor by the use of an enzyme preparation containing nucleoside phosphorylase, thereby forming an N-glycosidic bond between the base moiety of the base donor and the saccharide moiety of the saccharide residue donor, which comprises using, as the enzyme preparation containing nucleoside phosphorylase, a preparation derived from the cells of one or more kinds of microorganisms belonging to thermophiles of the genus Bacillus and having high nucleoside phosphorylase activity per unit cell weight.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: April 9, 1996
    Assignee: Yamasa Shoyu Kabushiki Kaisha
    Inventors: Hiroshi Yamauchi, Hideki Utsugi, Yuichiro Midorikawa
  • Process for producing nucleosides
    Patent number: 5384251
    Abstract: The present invention concerns a process for producing nucleosides by carrying out the reaction of a base donor, a saccharide residue donor and a phosphoric acid donor by the use of an enzyme preparation containing nucleoside phosphorylase, thereby forming an N-glycosidic bond between the base moiety of the base donor and the saccharide moiety of the saccharide residue donor, which comprises using, as the enzyme preparation containing nucleoside phosphorylase, a preparation derived from the cells of one or more kinds of microorganisms belonging to thermophiles of the genus Bacillus and having high nucleoside phosphorylase activity per unit cell weight.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: January 24, 1995
    Assignee: Yamasa Shoyu Kabushiki Kaisha
    Inventors: Hiroshi Yamauchi, Hideki Utsugi, Yuichiro Midorikawa
  • Process for producing nucleosides
    Patent number: 5258301
    Abstract: The present invention concerns a process for producing nucleosides by carrying out the reaction of a base donor, a saccharide residue donor and a phosphoric acid donor by the use of an enzyme preparation containing nucleoside phosphorylase, thereby forming an N-glycosidic bond between the base moiety of the base donor and the saccharide moiety of the saccharide residue donor, which comprises using, as the enzyme preparation containing nucleoside phosphorylase, a preparation derived from the cells of one or more kinds of microorganisms belonging to thermophiles of the genus Bacillus and having high nucleoside phosphorylase activity per unit cell weight.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: November 2, 1993
    Assignee: Yamasa Shoyu Kabushiki Kaisha
    Inventors: Hiroshi Yamauchi, Hideki Utsugi, Yuichiro Midorikawa