Patents by Inventor Seiji Takasaki

Seiji Takasaki 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: 6175041
    Abstract: The invention relates to a process for producing a trifluoromethylbenzylamine represented by the following general formula (1). This process includes hydrogenating a trifliuoromethylbenzonitrile represented by the following general formula (2) by hydrogen in an organic solvent in the presence of ammonia, using a Raney catalyst, where each R independently represents a halogen selected from the group consisting of fluorine, chlorine, bromine and iodine, an alkyl group having a carbon atom number of 1-4, an alkoxy group having a carbon atom number of 1-4, an amino group, a hydroxyl group or a trifluoromethyl group, and n represents an integer from 0 to 4, where R and n are defined as above. With this process, it is possible to obtain the trifluoromethylbenzylamine easily and inexpensively at an extremely high yield.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: January 16, 2001
    Assignee: Central Glass Company, Limited
    Inventors: Seiji Takasaki, Takahiro Koizumi, Takashi Kume, Michio Ishida, Satoru Narizuka, Eri Tsukada
  • Patent number: 5739390
    Abstract: An improved process is discloses to prepare an amino carboxylic acid salt. According to the process an aqueous solution of an amino alcohol is contacted with an alkali metal hydroxide in the presence of an effective amount of Raney copper catalyst that has from about 10 parts per million of an element selected from the group consisting of bismuth, tin, antimony, lead, germanium and mixtures thereof.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: April 14, 1998
    Assignee: Monsanto Company
    Inventors: Thaddeus Stephen Franczyk, Yukio Kadono, Norikazu Miyagawa, Seiji Takasaki, Hiroki Wakayama
  • Can
    Patent number: D816515
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: May 1, 2018
    Assignee: Sapporo Holdings Limited
    Inventors: Seiji Takasaki, Chiharu Nakano, Keigo Aota, Tomoya Shigetomi, Ryo Atsumi, Tetsuya Monna