Patents by Inventor Chien-Shen Ma

Chien-Shen Ma 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).

  • Arm chair
    Patent number: D453079
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: January 29, 2002
    Assignee: The e chair Company
    Inventor: Chien-Shen Ma
  • Arm chair
    Patent number: D465345
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: November 12, 2002
    Assignee: The e Chair Company
    Inventor: Chien-Shen Ma
  • Arm chair
    Patent number: D479656
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: September 16, 2003
    Inventor: Chien-Shen Ma
  • Arm chair
    Patent number: D489191
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: May 4, 2004
    Inventor: Chien-Shen Ma
  • Arm chair
    Patent number: D493627
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: August 3, 2004
    Inventor: Chien-Shen Ma
  • Chair
    Patent number: D707459
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 24, 2014
    Inventor: Chien-Shen Ma