Patents by Inventor Keisuke Tejima

Keisuke Tejima 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).

  • Disc recorder
    Patent number: D503693
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: April 5, 2005
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Disc recorder
    Patent number: D513242
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: December 27, 2005
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Disc player
    Patent number: D519092
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: April 18, 2006
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Combined disc recorder and hard disc drive
    Patent number: D563942
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: March 11, 2008
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Disc player
    Patent number: D564477
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: March 18, 2008
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Combined disc recorder and hard disc drive
    Patent number: D564493
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: March 18, 2008
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Amplifier
    Patent number: D569840
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: May 27, 2008
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Amplifier
    Patent number: D570330
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: June 3, 2008
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Amplifier
    Patent number: D578505
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: October 14, 2008
    Assignee: Sony Corporation
    Inventors: Keisuke Tejima, Yusuke Otani, Jun Uchiyama, Katsuhisa Hakoda
  • Disc player
    Patent number: D580385
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: November 11, 2008
    Assignee: Sony Corporation
    Inventors: Keisuke Tejima, Yusuke Otani, Jun Uchiyama, Katsuhisa Hakoda
  • Combined disc recorder and hard disc drive
    Patent number: D582868
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: December 16, 2008
    Assignee: Sony Corporation
    Inventors: Keisuke Tejima, Yusuke Otani, Jun Uchiyama, Katsuhisa Hakoda
  • Combined disc recorder and hard disc drive
    Patent number: D585858
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: February 3, 2009
    Assignee: Sony Corporation
    Inventors: Keisuke Tejima, Yusuke Otani, Jun Uchiyama, Katsuhisa Hakoda
  • Combined disc recorder and hard disk drive
    Patent number: D585859
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: February 3, 2009
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Disc player
    Patent number: D497895
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: November 2, 2004
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Speaker box
    Patent number: D498230
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: November 9, 2004
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Disc player
    Patent number: D500018
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: December 21, 2004
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Disc player
    Patent number: D597103
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: July 28, 2009
    Assignee: Sony Corporation
    Inventors: Kai Xiao, Jia Han, Zhongsheng Hong, Takuro Hibino, Keisuke Tejima
  • Disc player
    Patent number: D619148
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: July 6, 2010
    Assignee: Sony Corporation
    Inventor: Keisuke Tejima
  • Disc player
    Patent number: D681577
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: May 7, 2013
    Assignee: Sony Corporation
    Inventors: Keisuke Tejima, Jun Uchiyama
  • Disc player
    Patent number: D711925
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: August 26, 2014
    Assignee: Sony Corporation
    Inventors: Keisuke Tejima, Qi Zheng, Zhongsheng Hong, Jun Uchiyama