Patents by Inventor Daijiroh Tokunaga

Daijiroh Tokunaga 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).

  • Vacuum cleaner
    Patent number: D530467
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: October 17, 2006
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Daijiroh Tokunaga
  • Air purifier
    Patent number: D481786
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: November 4, 2003
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Daijiroh Tokunaga
  • Air purifier
    Patent number: D489800
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: May 11, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Daijiroh Tokunaga
  • Air purifier
    Patent number: D497984
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: November 2, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Daijiroh Tokunaga