Patents by Inventor Charles David Ray

Charles David Ray 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).

  • Integration of at least two processes to re-use acid
    Patent number: 7364880
    Abstract: The invention relates to integrating at least two processes that use at least one acid, wherein one process utilizes an ion-exchange purification step.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: April 29, 2008
    Assignee: Cargill, Incorporated
    Inventors: Charles David Ray, John A. Bohlmann, Don Grunig, James R. Trinkle, Michael Brandon Bassett