Patents by Inventor Nobuhito Tada

Nobuhito Tada 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 1-(3,4-dichlorobenzyl)-5-octylbiguanide or a salt thereof
    Patent number: 7868207
    Abstract: The present invention provides a process for producing 1-(3,4-dichlorobenzyl)-5-octylbiguanide or a salt thereof, the process comprising reacting 1-cyano-3-octylguanidine or a salt thereof, with 3,4-dichlorobenzylamine or a salt thereof, in an ester-based organic solvent. According to the present invention, the reaction can be carried out at a low temperature using general-purpose equipment, and 1-(3,4-dichlorobenzyl)-5-octylbiguanide or a salt thereof can be produced in a high yield by a safe and easy process.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: January 11, 2011
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yoshihiko Okaichi, Nobuhito Tada, Daisuke Nomi, Nobuhisa Fujita, Koichi Tsuji, Taizo Yamaguchi, Yasuaki Muguruma, Hisayuki Tsujimori
  • PROCESS FOR PRODUCING 1-(3,4-DICHLOROBENZYL)-5-OCTYLBIGUANIDE OR A SALT THEREOF
    Publication number: 20090270653
    Abstract: The present invention provides a process for producing 1-(3,4-dichlorobenzyl)-5-octylbiguanide or a salt thereof, the process comprising reacting 1-cyano-3-octylguanidine or a salt thereof, with 3,4-dichlorobenzylamine or a salt thereof, in an ester-based organic solvent. According to the present invention, the reaction can be carried out at a low temperature using general-purpose equipment, and 1-(3,4-dichlorobenzyl)-5-octylbiguanide or a salt thereof can be produced in a high yield by a safe and easy process.
    Type: Application
    Filed: August 28, 2007
    Publication date: October 29, 2009
    Inventors: Yoshihiko Okaichi, Nobuhito Tada, Daisuke Nomi, Nobuhisa Fujita, Koichi Tsuji, Taizo Yamaguchi, Yasuaki Muguruma, Hisayuki Tsujimori