Patents by Inventor Luke Richard Schmieder

Luke Richard Schmieder 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).

  • Apparatus for measuring ultrafiltration rate
    Patent number: 3990973
    Abstract: A system is disclosed for measuring the ultrafiltration rate in an artificial kidney. The system comprises a flow rate meter connected with the outlet of the dialyzer, means for placing the flow control system in bypass so that the dialysate flow is diverted around the dialyzer, and means for maintaining the static pressure of dialysate in the dialyzer during bypass at a value equal to the average of the dynamic pressure prior to bypass. The flow rate indicated by the meter during the bypass interval is equal to the rate of ultrafiltrate flow through the dialyzing medium. Preferably, the pressure in the dialyzer during bypass is maintained by a negative pressure regulating means which responds to the average value of dialysate pressure in the dialyzer during both the run and bypass operations.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: November 9, 1976
    Assignee: Cobe Laboratories, Inc.
    Inventors: James T. Boag, Luke Richard Schmieder