Patents by Inventor Robert Francis Koschalk

Robert Francis Koschalk 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).

  • Combined washer and aspirator
    Patent number: 3949771
    Abstract: A combined washer and aspirator device which is readily adapted to both aspirate and wash material from a solid body in a confined space. The washer-aspirator device is especially constructed to be utilized in conjunction with a hepatitis test wherein the device can remove and/or wash serum from a detection carrier such as a spherical ball. In a preferred embodiment, the device has a probe with an orifice for holding the ball in a suspended state as it is washed and aspirated.
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: April 13, 1976
    Assignee: Abbott Laboratories
    Inventors: John Dennis Dodge, Robert Francis Koschalk
  • Apparatus for determining immunoassays of antigens and their antibodies
    Patent number: 3932141
    Abstract: A test apparatus for the determination of immunoassays of antigens and their antibodies which comprises a receptacle tray having a plurality of wells for receiving and samples, a holder for receiving and holding balls, coated with an immunologic composition and for depositing the balls into the wells of said receptacle tray, a ball-release piece fitting over one end of the holder, the ball-release piece being arranged to release the balls from the holder when pressed, and a cap to fit on the open end of the ball-release piece.
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: January 13, 1976
    Assignee: Abbott Laboratories
    Inventors: Glenn Lee Beall, John Dennis Dodge, Robert Francis Koschalk, Emil Henry Soika