Patents by Inventor Lori A. Ray

Lori A. 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).

  • Ultrapurification of organic solvents
    Patent number: 6059857
    Abstract: A system for the ultrapurification of organic solvents comprising (1) a membrane-based vapor permeation step for selective removal of water vapor from the solvent, wherein a countercurrent sweep stream is used that has a particular partial pressure of water vapor, (2) a filtration step for selective removal of particulates, and (3) an ion exchange step for selective removal of ionic species.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: May 9, 2000
    Assignee: Bend Research, Inc.
    Inventors: Roderick J. Ray, David D. Newbold, Dwayne T. Friesen, Scott B. McCray, Lori A. Ray