Patents by Inventor Gene H. Yeh

Gene H. 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).

  • Polyolefin films having improved barrier properties
    Patent number: 5155160
    Abstract: The barrier properties of crystalline polyolefin film can be improved substantially by incorporating a precise amount of a partially incompatible wax into the polyolefin. When the polyolefin is polypropylene or polybutylene, the wax is preferably a paraffin wax. The precise amount of wax, which produces optimum improvement in barrier properties, lies in the range of about 3 to 10 percent based on the weight of the polyolefin. The range in which excellent results are obtained can be broadened by contacting the film with a cooling medium immediately after it is extruded. The film may be annealed to further improve the barrier properties.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: October 13, 1992
    Assignee: James River II, Inc.
    Inventors: Gene H. Yeh, Attila Matray, Allyn J. Ziegenhagen
  • Styrene-butadiene compositions having improved barrier properties
    Patent number: 5106677
    Abstract: The barrier properties, particularly water vapor transmission rate, of compositions comprising a stryene-butadiene polymer can be improved substantially by adding from about 0.5 to 10 percent of a polyethylene type wax to the composition.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: April 21, 1992
    Assignee: James River II Inc.
    Inventors: Gene H. Yeh, Stephen O. Cook