Patents by Inventor John Wiktorowicz

John Wiktorowicz 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).

  • On line ion contaminant removal apparatus and method for capillary electrophoresis
    Patent number: 5593559
    Abstract: A Capillary Electrophoresis apparatus and method are disclosed which utilize a meltable plug in an end of the capillary tube to selectively pass small ionic contaminants electrophoretically and retain macromolecular analytes against one end of the plug until the plug is melted. When this plug is melted, the analytes and the contaminants pass through unimpeded. This permits separation of the analytes from the contaminants during electrophoretic separation and enhances instrument resolution.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: January 14, 1997
    Assignee: The Perkin-Elmer Corporation
    Inventor: John Wiktorowicz
  • On line ion contaminant removal apparatus and method for capillary electrophoresis
    Patent number: 5423966
    Abstract: A Capillary Electrophoresis apparatus and method are disclosed which utilize a meltable plug in an end of the capillary tube to selectively pass small ionic contaminants electrophoretically and retain macromolecular analytes against one end of the plug until the plug is melted. When this plug is melted, the analytes and the contaminants pass through unimpeded. This permits separation of the analytes from the contaminants during electrophoretic separation and enhances instrument resolution.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: June 13, 1995
    Assignee: Perkin-Elmer Corporation
    Inventor: John Wiktorowicz