Patents by Inventor Chih-Yi Tsai

Chih-Yi Tsai 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 with multiple retaining frames
    Patent number: 7261381
    Abstract: A seat includes a seat portion and a backrest. A plurality of U-shaped retaining frames of different sizes are pivotably connected to the backrest and sized such that a larger retaining frame encloses a smaller retaining frame. The individual retaining frame can be pivoted away from the backrest according to the users of different sizes.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: August 28, 2007
    Inventor: Chih-Yi Tsai
  • Seat with multiple retaining frames
    Publication number: 20060055228
    Abstract: A seat includes a seat portion and a backrest. A plurality of U-shaped retaining frames of different sizes are pivotably connected to the backrest and sized such that a larger retaining frame encloses a smaller retaining frame. The individual retaining frame can be pivoted away from the backrest according to the users of different sizes.
    Type: Application
    Filed: September 15, 2004
    Publication date: March 16, 2006
    Inventor: Chih-Yi Tsai