Patents by Inventor Hsiun P. Hsieh

Hsiun P. Hsieh 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: 4193908
    Abstract: An improved process for dispersing alumina trihydrate in a polyester resin is disclosed wherein the improvement comprises lowering the viscosity of the polyester-trihydrate dispersion by dehydrating the alumina trihydrate to a reduction in the initial loss on ignition in a range of from 0.2 to 5.0 percent prior to adding the trihydrate to the polyester resin.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: March 18, 1980
    Assignee: Aluminum Company of America
    Inventors: Hsiun P. Hsieh, James J. Koenig
  • Patent number: 4159977
    Abstract: An improved process for dispersing alumina trihydrate in a polyester resin is disclosed wherein the improvement comprises reducing the times required to accomplish the gelling and curing of a polyester resin by blending two to ten percent activated alumina, based on the total weight of alumina, with the alumina trihydrate.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: July 3, 1979
    Assignee: Aluminum Company of America
    Inventor: Hsiun P. Hsieh