Patents by Inventor Chien-Cheng Her

Chien-Cheng Her 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).

  • Hex wrench
    Publication number: 20040031360
    Abstract: A hex wrench includes a head with notches defined in an outer periphery thereof and the notches are located to face the inside of the object. The inside of the object is deformed during being rotated by the head and engaged with the notches so as to increase the feature of anti-slippery between the head of the wrench and the object.
    Type: Application
    Filed: August 14, 2002
    Publication date: February 19, 2004
    Inventor: Chien-Cheng Her