Patents by Inventor Donald Le Grand

Donald Le Grand 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).

  • Organo-titanate catalysts for preparing pure macrocyclic oligoesters
    Publication number: 20050054862
    Abstract: Organo-titanate catalysts are prepared that are useful to catalyze depolymerization of a polyester to produce macrocyclic oligoesters substantially free from macrocyclic co-oligoesters.
    Type: Application
    Filed: May 20, 2004
    Publication date: March 10, 2005
    Applicant: Cyclics Corporation
    Inventors: Peter Phelps, Timothy Thompson, Yi-Feng Wang, Donald Le Grand