Patents by Inventor Gi-Horng Chuang

Gi-Horng Chuang 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).

  • Patent number: 5437931
    Abstract: An optically variable pigment being formed from optically variable flakes. The optically variable multilayer is vacuum deposited onto a flexible polyester substrate having being provided with a release layer. An optically variable stack is formed from an opaque metallic reflective layer and two sub-unit film stacks D'MD symmetrically stacked on the opposite surfaces of the metallic reflective layer. D is adjacent to the reflective layer and is a color-presenting layer and D' is an outer layer of the stack which is used to protect the multilayer film to obtain better color-presenting. M is a semitransparent metallic layer, e.g. chromium.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: August 1, 1995
    Assignee: Industrial Technology Research Institute
    Inventors: Rung-Ywan Tsai, Chaur-Tsang Wei, Chii-Hua Lee, Fang-Chuan Ho, Gi-Horng Chuang