Patents by Inventor Takayuki Kumazawa

Takayuki Kumazawa 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).

  • Chair
    Patent number: D553376
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: October 23, 2007
    Assignee: Itoki Corporation
    Inventors: Yasuhiro Nakamura, Takayuki Kumazawa
  • Chair
    Patent number: D557917
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: December 25, 2007
    Assignee: Itoki Corporation
    Inventors: Yasuhiro Nakamura, Takayuki Kumazawa
  • Backrest shell for chair
    Patent number: D645682
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: September 27, 2011
    Assignee: Itoki Corporation
    Inventors: Yasuhiro Nakamura, Takayuki Kumazawa
  • Chair
    Patent number: D656329
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: March 27, 2012
    Assignee: ITOKI Corporation
    Inventors: Yasuhiro Nakamura, Takayuki Kumazawa