Patents by Inventor Charles E. Nakamura

Charles E. Nakamura 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).

  • Esters of unsymmetrically 2-substituted glycolic acid dimers
    Patent number: 5254718
    Abstract: This invention concerns esters of unsymmetrically 2-substituted glycolic acid dimers, a process for their preparation and their use in the preparation of unsymmetrically 3,6-substituted 1,4-dioxane-2,5-diones.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: October 19, 1993
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: David L. Anton, Charles E. Nakamura