Patents by Inventor Lan Jo Yeh

Lan Jo Yeh 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).

  • Thermal transfer ribbon for high density/high resolution bar code applications
    Patent number: 5939207
    Abstract: A thermal transfer ribbon having a pigmented layer with a unique combination of melt viscosity, hardness and mechanical properties and an ultra-thin release layer between the pigmented layer and a substrate is provided. The thermal transfer ribbon includes a release layer having a thickness of 0.1 to 1.0 micron provided on one side of the substrate, the release layer being composed of an ethylene vinylacetate copolymer, .alpha.-olefin maleic anhydride copolymer and wax. A pigmented layer is provided on the release layer and is composed of a low structure carbon black, a polystyrene resin and a polyacrylate resin. A heat-resistant backcoat is preferably provided on the back side of the substrate.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: August 17, 1999
    Assignee: International Imaging Materials, Inc.
    Inventors: Alexander T. Fensore, Jeng-Li Liang, Thomas Rogers, Michael J. Wachowiak, Lan Jo Yeh