Patents by Inventor R. Brent Nielsen

R. Brent Nielsen 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).

  • Patent number: 5271903
    Abstract: An apparatus for receiving chemical compounds carried in a high pressure effluent fluid stream from supercritical fluid extraction. The apparatus includes a heated conduit connected to supercritical fluid extraction device through which an effluent stream flows. The exit port of the heated conduit is located within the airspace of a decompression zone which is free of liquid. A liquid solvent chamber is provided in open communication with the downstream end of the decompression zone into which the effluent stream flows for the recovery of chemical compounds therein.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: December 21, 1993
    Assignee: Dionex Corporation
    Inventors: Kevin Durst, Nathan L. Porter, Ross A. Riches, Gary L. Gleavae, R. Brent Nielsen, Bruce E. Richter