Patents by Inventor Yuji Hirooka

Yuji Hirooka 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).

  • Telephone set
    Patent number: D558181
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: December 25, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshio Takada, Yuji Hirooka
  • Telephone set
    Patent number: D558182
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: December 25, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshio Takada, Yuji Hirooka
  • Telephone set
    Patent number: D562304
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: February 19, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshio Takada, Yuji Hirooka
  • Portion of an electronic computer
    Patent number: D649964
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: December 6, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keiji Chikuma, Yuji Hirooka
  • Electronic computer
    Patent number: D737813
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: September 1, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yuji Hirooka
  • Electronic computer
    Patent number: D746809
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: January 5, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshio Takada, Yasushi Fukuoka, Yuji Hirooka