Patents by Inventor Chien-Tang Chang

Chien-Tang Chang 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).

  • Flow rate sensor
    Patent number: 6886413
    Abstract: A flow rate sensor includes a first body and a second body airtightly and detachably abutting each other. The first body and the second body respectively-include a passage defined therein. The two passages are tapered relative to each other. The first body and the second body respectively have a path defined therein. The two paths respectively communicate with a corresponding one of the two passages in the first and second bodies. A sensing device is airtightly sandwiched between the first and second body and corresponds to the two paths for calculating the different of the fluid that flows through the two passages in the first and second bodies.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: May 3, 2005
    Inventors: Chien-Tang Chang, Tai-Sheng Lin