Patents by Inventor Ma Chien-Shen

Ma Chien-Shen 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).

  • Seat pad adjusting structure of a chair
    Patent number: 6422650
    Abstract: A seat pad adjusting structure of a chair includes a base having a first side formed with an oblique catch extending downward in an inclined manner, and a second side provided with a backrest connecting bracket, a bottom plate mounted on the base and including a base plate secured on the base, an elongated hollow flexible member having a first side formed on one side of the base plate, a swingable flap formed on a second side of the flexible member and located above the oblique catch of the base, and an elongated elastic pad mounted in the flexible member, and a seat pad, mounted on the base plate.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: July 23, 2002
    Assignee: The e chair company
    Inventor: Ma Chien-Shen