Patents by Inventor Donald Harvey Brunk

Donald Harvey Brunk 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).

  • Displacement pump
    Patent number: 6004117
    Abstract: An improved displacement pump is provided with flow path means preventing hysteresis-causing bubbles from accumulating in piston clearances.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: December 21, 1999
    Assignee: Qualicon Inc.
    Inventor: Donald Harvey Brunk
  • Direct blot electrophoresis apparatus and method
    Patent number: 5916429
    Abstract: In a horizontal gel, direct blot electrophoresis separation apparatus, device to remove gas dissolved in the buffer solution surrounding the anode at a location remote from the interface between the gel and the moving membrane, such as a gas evolution member disposed between the anode and the moving membrane of such apparatus, has been found to result in more consistent and readable blot patterns with less defects.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: June 29, 1999
    Assignee: Qualicon Inc.
    Inventor: Donald Harvey Brunk