Patents by Inventor H. David Chen

H. David Chen 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).

  • Process for preparing hydroxy-functionalized polyesters
    Patent number: 5852163
    Abstract: A process for preparing a thermoplastic hydroxy-functionalized polyesters comprises contacting a dicarboxylic acid or a mixture of dicarboxylic acids with a diepoxide in the presence of a monofunctional carboxylic acid and a catalyst, and in the absence of a solvent under conditions sufficient to form the hydroxy-functionalized polyesters.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: December 22, 1998
    Assignee: The Dow Chemical Company
    Inventors: H. David Chen, Michael N. Mang, Jerry E. White