Patents by Inventor Kai-Rhen Shiao

Kai-Rhen Shiao 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).

  • Polyurethanes prepared from amide linkages-containing diamine chain extender
    Patent number: 5834580
    Abstract: Polyurethane elastic products prepared by a two-stage process are disclosed. In the first stage, polyols are reacted with diisocyanates to form prepolymers. The prepolymers are then reacted with diamine chain extenders which contain amide linkages, to form polyurethane elastic products.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: November 10, 1998
    Assignee: Industrial Technology Research Institute
    Inventors: Wei-Liang Chen, Kai-Rhen Shiao