Patents by Inventor Richard R. Hallen

Richard R. Hallen 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).

  • Method for sizing and desizing yarns with liquid and supercritical carbon dioxide solvent
    Patent number: 5863298
    Abstract: Disclosed is a method of sizing and desizing yarn, or more specifically to a method of coating yarn with size and removing size from yarn with liquid carbon dioxide solvent.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: January 26, 1999
    Assignee: Battelle Memorial Institute
    Inventors: John L. Fulton, Clement R. Yonker, Richard R. Hallen, Eddie G. Baker, Lawrence E. Bowman, Laura J. Silva