Patents by Inventor Michael William Recknor

Michael William Recknor 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).

  • Pressure injection apparatus and method for injecting a sample into an electrophoresis capillary
    Patent number: 5667657
    Abstract: A present invention and method provides a pressure injection apparatus (20) that injects a quantitatively defined volume of liquid sample (21) from a container (22) into a capillary device (23). A servo pressure primary regulator (26) is included which precisely regulates the fluid from a supply pressure (P.sub.S) to a substantially constant regulated pressure (P.sub.R) in communication with the liquid sample (21) for a predetermined period of time. A feedback mechanism cooperates with a valving assembly (31) to continuously monitor and adjust the regulated pressure (P.sub.R) to be substantially constant and precise for delivery to the container (21).
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: September 16, 1997
    Assignee: Dionex Corporation
    Inventors: Michael William Recknor, David A. Wolze