Patents by Inventor Yasutaka Fujioka

Yasutaka Fujioka 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).

  • Compound having PARP inhibitory activity
    Patent number: 9062061
    Abstract: A compound represented by the following general formula (1) or a salt thereof. R1 represents a halogen atom and so on; R2 and R3 each represent a hydrogen atom and so on; R4 and R5 each represent a hydrogen atom and so on, or R4 and R5 may form an oxo group; Ra and Rb each represent a lower alkyl group optionally having a substituent and so on, or they may bind to each other to form a nitrogen-containing heterocyclic ring which may be substituted by one or plural Rc; Rc represents an aryl group optionally having a substituent and so on; ring A represents a benzene ring and so on; and m represents 0, 1 or 2.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: June 23, 2015
    Assignee: SANTEN PHARMACEUTICAL CO., LTD.
    Inventors: Takahiro Honda, Hiroshi Enomoto, Kenji Kawashima, Shinji Takaoka, Yasutaka Fujioka, Mamoru Matsuda, Koji Ohashi, Yukie Fujita, Shin-ichiro Hirai, Hiroaki Kurashima
  • NOVEL COMPOUND HAVING PARP INHIBITORY ACTIVITY
    Publication number: 20140243320
    Abstract: A compound represented by the following general formula (1) or a salt thereof. R1 represents a halogen atom and so on; R2 and R3 each represent a hydrogen atom and so on; R4 and R5 each represent a hydrogen atom and so on, or R4 and R5 may form an oxo group; Ra and Rb each represent a lower alkyl group optionally having a substituent and so on, or they may bind to each other to form a nitrogen-containing heterocyclic ring which may be substituted by one or plural Rc; Rc represents an aryl group optionally having a substituent and so on; ring A represents a benzene ring and so on; and m represents 0, 1 or 2.
    Type: Application
    Filed: July 12, 2012
    Publication date: August 28, 2014
    Applicant: SANTEN PHARMACEUTICAL CO., LTD.
    Inventors: Takahiro Honda, Hiroshi Enomoto, Kenji Kawashima, Shinji Takaoka, Yasutaka Fujioka, Mamoru Matsuda, Koji Ohashi, Yukie Fujita, Shin-ichiro Hirai, Hiroaki Kurashima
  • Method for producing aromatic difluoroacetic acid ester
    Patent number: 8802886
    Abstract: Disclosed is a method for producing a compound having a difluoromethylene group at an even lower cost and with excellent yield. The production method of the present invention is a method for producing an aromatic difluoroacetic acid ester, which comprises reacting an iodobenzene containing an electro attracting group and an ?-silyl difluoroacetic acid ester in the presence of a metal halide.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: August 12, 2014
    Assignee: Central Glass Company, Limited
    Inventors: Hideki Amii, Kenichi Fujikawa, Yasutaka Fujioka, Makoto Matsuura
  • METHOD FOR PRODUCING AROMATIC DIFLUOROACETIC ACID ESTER
    Publication number: 20120220795
    Abstract: Disclosed is a method for producing a compound having a difluoromethylene group at an even lower cost and with excellent yield. The production method of the present invention is a method for producing an aromatic difluoroacetic acid ester, which comprises reacting an iodobenzene containing an electro attracting group and an ?-silyl difluoroacetic acid ester in the presence of a metal halide.
    Type: Application
    Filed: October 26, 2010
    Publication date: August 30, 2012
    Inventors: Hideki Amii, Kenichi Fujikawa, Yasutaka Fujioka, Makoto Matsuura