Patents by Inventor Hirokazu Yamakita

Hirokazu Yamakita 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).

  • 5-Phenylbenzylamine compounds, process for their production and intermediates for their synthesis
    Patent number: 7067535
    Abstract: The present invention relates to a 5-phenylbenzylamine compound represented by the formula [1]: wherein Ring A represents a phenyl group having a substituent(s), Ra, Rb1 and Rb2 each represent hydrogen atom, a halogen atom, a lower alkyl group, a halogeno-lower alkyl group or a lower alkoxy group, Rc1 represents hydrogen atom, a lower alkyl group optionally substituted by a heterocyclic group, or an acyl group, Rc2 and Re each represent hydrogen atom or a lower alkyl group, Rd represents hydrogen atom, a lower alkyl group or an acyl group, and Rf represents a lower alkyl group or a cyclic lower alkyl group, or a pharmaceutically acceptable salt thereof, a process for preparing the same and synthetic intermediate thereof.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: June 27, 2006
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Masami Takahashi, Tsutomu Miyake, Hirokazu Yamakita, Akira Saito, Hidetoshi Asai
  • 5-Phenylbenzylamine compounds, process for their production and intermediates for their synthesis
    Publication number: 20040097548
    Abstract: The present invention relates to a 5-phenylbenzylamine compound represented by the formula [1]: 1
    Type: Application
    Filed: March 19, 2003
    Publication date: May 20, 2004
    Inventors: Masami Takahashi, Tsutomu Miyake, Hirokazu Yamakita, Akira Saito, Hidetoshi Asai