Patents by Inventor James W. Winkelman

James W. Winkelman 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: 6132353
    Abstract: Red cells are separated from plasma or serum of whole blood by arranging an evacuated tube sealed by a self-sealing stopper above and preferably coaxial with a tube containing a blood sample and sealed by a self-sealing stopper. A hollow double ended needle is held by a fixture and is disposed between and coaxial with the tubes and the tubes are placed in the fixture in a vertical position in a centrifuge and rotated about and spaced from an axis parallel to the axis of the tubes and needle. After the red cells are separated from the serum and/or plasma the tubes are pushed toward one another so that the needle penetrates both stoppers and the serum and/or plasma is drawn into the upper tube. The tubes and needle are separated while still being rotated so that the whole blood components are separated as required.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: October 17, 2000
    Inventors: James W. Winkelman, Oren Zinder, Manfred Grumberg, Jacob Schreibman
  • Patent number: 4998533
    Abstract: Apparatus and methods for in vivo determination of red and white blood cell characteristics from a flow of red and white blood cells in mucous membranes are provided wherein image capturing means are employed to optically isolate images from a flow of blood cells and transmit those images to an image receiving means for encoding into electronic signals. The images are also filtered through light filters and subsequently transmitted to a computer for evaluation and analysis. The results of this analysis are then made available for display either on a CRT or hard copy printer.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: March 12, 1991
    Inventor: James W. Winkelman