Patents by Inventor Gary W. Ragsdale

Gary W. Ragsdale 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 polycarbonates with a metal chelating agent
    Patent number: 3943101
    Abstract: An improved process for preparing a color stable polycarbonate by carrying out the reaction in the presence of an additive. The additive employed herein is gluconic acid or its alkali metal salts.
    Type: Grant
    Filed: May 31, 1974
    Date of Patent: March 9, 1976
    Assignee: General Electric Company
    Inventors: Jorgen H. Vestergaard, Gary W. Ragsdale