Patents by Inventor Joaquim C. Ritter

Joaquim C. Ritter 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 the synthesis of 2,5-Dihydroxyterephthalic acid
    Patent number: 7576237
    Abstract: 2,5-dihydroxyterephthalic acid is produced in high yields and high purity from 2,5-dihaloterephthalic acid by contact with a copper source and a ligand that coordinates to copper under basic conditions.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: August 18, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Joaquim C. Ritter