Patents by Inventor Huang Yin-Han

Huang Yin-Han 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).

  • Cutter knife
    Patent number: 5303469
    Abstract: A cutter knife including an upper cover, a lower cover engaged with the upper cover to form a handle, a knife holder force-fitted with a front end of the lower cover and having a slit and a threaded recess, a knife partly inserted into the knife holder through the slit of the knife holder, a knob threadedly engaged with the recess of the knife holder, and a tail seat engaged with a rear end of the handle and having a slit.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: April 19, 1994
    Inventor: Huang Yin-Han