Patents by Inventor Hirokazu Seki

Hirokazu Seki 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).

  • Synthesis of an imidazolyl isothiourea
    Patent number: 4560764
    Abstract: N-Cyano-N',S-ethylene-N'-([4-methyl-5-imidazolyl)methyl]isothiourea which is of value as an intermediate in the production of cimetidine and a process for its production are provided.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: December 24, 1985
    Assignee: Fujimoto Pharmaceutical Corporation
    Inventors: Michitaro Fujimoto, Giichi Funazo, Hirokazu Seki, Shuhei Takamatsu, Takeshi Sakai
  • Synthesis of cimetidine and analogs thereof
    Patent number: 4520201
    Abstract: There is provided a process for producing cyanoguanidine derivatives, especially N-cyano-N'-Methyl-N"-(4-methyl-5-imidazolylmethyl)thioethyl-guanidine.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: May 28, 1985
    Assignee: Fujimoto Pharmaceutical Corp.
    Inventors: Michitaro Fujimoto, Hironori Ohde, Hirokazu Seki, Shuhei Takamatsu, Takeshi Sakai
  • Imidazole guanidine compounds and method of making same
    Patent number: 4468518
    Abstract: N-Cyano-N'-methyl-N"-(2-mercaptoethyl)-N"-[(4-methyl-5-imidazolyl)methyl]gu anidine and a method of producing the same are provided.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: August 28, 1984
    Assignee: Fujimoto Pharmaceutical Corporation
    Inventors: Michitaro Fujimoto, Giichi Funazo, Hirokazu Seki, Shuhei Takamatsu, Takeshi Sakai