Patents by Inventor Ronald E. Toth

Ronald E. Toth 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).

  • Pulsed thermal flow sensor system
    Patent number: 5533412
    Abstract: A precise fluid flow meter fabricated by micromachining techniques measures a wide range of fluid flow rates. Two serial portions of an enclosed channel have different cross-sectional areas, and therefore different flow velocities. The fluid carries the thermal pulse through the flow channel to two sensor elements spaced apart along the channel downstream from the heating element. The transit time of the thermal pulse between the two sensor elements measures the fluid flow velocity.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 9, 1996
    Assignees: IC Sensors, Inc., Baxter International Inc.
    Inventors: John H. Jerman, Ronald E. Toth, David A. Winchell, David W. Pennington
  • Blood processing system having spill sensor with fail-safe circuit
    Patent number: 5529567
    Abstract: A blood processing assembly includes a centrifuge contained within a heated housing or chamber. A fail safe spill or splash detector is located within the inner wall of the housing. The detector includes a pair of parallel electrodes separated from each other from a small gap. The circuit detects a splash or droplet of liquid which conducts current between the electrodes.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: June 25, 1996
    Assignee: Baxter International Inc.
    Inventors: Ronald E. Toth, William H. Cork