Patents by Inventor Ryonosuke Yoshida

Ryonosuke Yoshida 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 preparing 1,2,4-thiadiazole derivatives
    Patent number: 5705650
    Abstract: An improved process for the production of 5-amino-1,2,4-thiadiazol-3-yl-(2-(lower)-alkoxyimino)acetic acids starting from 5-substituted- or unsubstituted-3-aminoisoxazole compounds is disclosed herein. The title compounds are useful as acylating agents for the production of 7-acylaminocephalosporins.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: January 6, 1998
    Assignee: Katayama Seiyakusyo Co., Ltd.
    Inventors: Kuniaki Tatsuta, Yasuyuki Kurita, Takashi Inagaki, Ryonosuke Yoshida
  • Process for preparing 1,2,4-thiadiazole derivatives
    Patent number: 5585494
    Abstract: An improved process for the production of 5-amino-1,2,4-thiadiazol-3-yl-(2-(lower)-alkoxyimino)acetic acids starting from 5-substituted- or unsubstituted-3-amino-isoxazole compounds is disclosed herein. The title compounds are useful as acylating agents for the production of 7-acylaminocephalosporins.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: December 17, 1996
    Assignee: Katayama Seiyakusyo Co. Ltd.
    Inventors: Takashi Inagaki, Ryonosuke Yoshida
  • Fluorinated benzoyl compounds
    Patent number: 5093515
    Abstract: A 2-chloro-4,5-difluorobenzoyl compound of the formula: ##STR1## wherein R.sup.2 is a lower alkyl group, and R.sup.7 is a 2,4-difluorophenyl group or a 4-fluorophenyl group.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: March 3, 1992
    Assignees: Asahi Glass Company Ltd., Katayama Seiyakusho Co., Ltd.
    Inventors: Seisaku Kumai, Osamu Yokokoji, Akihiro Tamaoki, Ryonosuke Yoshida, Yoshiyuki Murakami
  • Method of producing improved starch by smoking
    Patent number: 4303452
    Abstract: A method of producing improved starch, which comprises subjecting starch having a water content of not more than 50% to a smoking treatment.
    Type: Grant
    Filed: April 10, 1980
    Date of Patent: December 1, 1981
    Assignee: Ajinomoto Company Incorporated
    Inventors: Toshiaki Ohira, Reiko Miyano, Ryonosuke Yoshida
  • Process for preparing N-higher aliphatic acyl derivatives of amino acids, peptides or proteins
    Patent number: 3985722
    Abstract: A mixed acid anhydride consisting of higher fatty acid having 6 to 22 carbon atoms and sulfuric anhydride is reacted with amino acids, peptides or proteins in the presence of a base to form N-higher aliphatic acyl derivatives of amino acids, peptides or proteins respectively in good yield. The reaction mixture comprises N-acylated-amino acids, peptides or -proteins and sulfate salts and may be directly used as detergent.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: October 12, 1976
    Assignee: Ajinomoto Co., Inc.
    Inventors: Ryonosuke Yoshida, Takashi Shishido
  • Stabilized halogen-containing resin compositions
    Patent number: 3983085
    Abstract: Thermally stabilized compositions of halogen-containing resins may be obtained by addition to the resin of a stabilizing agent of N.sup..omega.-higher alkyl or higher aliphatic acyl basic amino acid chelates of divalent metals or a mixture of or precursory ingredients thereof which is capable of forming N.sup..omega.-higher alkyl or higher aliphatic acyl-basic amino acid chelates when heated at the usual processing temperature of the halogen-containing resin.
    Type: Grant
    Filed: July 15, 1975
    Date of Patent: September 28, 1976
    Assignee: Ajinomoto Co., Inc.
    Inventors: Ryonosuke Yoshida, Kazutami Sakamoto