Patents by Inventor Tai-Ming Liang

Tai-Ming Liang 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).

  • Novel system for the production of polyurethanes
    Patent number: 4477602
    Abstract: The present invention is directed to a polyol blend comprising a polyether polyol having at least two and no more than three hydroxyl groups and from about 5 to about 40 percent by weight based on the total weight of the two components of a dispersion of a polyurea and/or polyhydrazodicarbonamide in an organic compound containing at least one hydroxyl group, the solids content of said blend being from about 1 to about 8 percent by weight. The polyol blend is useful in the production of polyurethane products.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: October 16, 1984
    Assignee: Mobay Chemical Corporation
    Inventors: Tai-Ming Liang, Keith G. Spitler
  • Novel system for the production of polyurethanes
    Patent number: 4448903
    Abstract: The present invention is directed to a blend of a polyether polyol and a polymer polyol, the blend having a solids content of from about 2 to about 15 percent by weight and the use of such blends in manufacturing polyurethane products.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: May 15, 1984
    Assignee: Mobay Chemical Corporation
    Inventors: Tai-Ming Liang, Keith G. Spitler