Patents by Inventor Austin Keith Wickline

Austin Keith Wickline 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).

  • Method for grinding colorants
    Patent number: 6267807
    Abstract: A method for grinding colorant agglomerates with a grinding medium comprising a Group IIIB and/or a lanthanide element and a Group IVB oxide. The grinding medium has a grain size of less than about 1.35 microns, and results in the production of substantially pure colorant concentrates.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: July 31, 2001
    Assignee: Lexmark International, Inc.
    Inventors: Kenneth James Harshbarger, Ajay Kanubhai Suthar, Richard Barber Watkins, Austin Keith Wickline
  • Process for priming a multi-chamber ink jet print head
    Patent number: 6095633
    Abstract: Pressure is applied to a resilient seal around the venting portion of a print head while the nozzles are elevated in the vertical position above the ink, thereby forcing ink out of the nozzles and purging the in-flow paths of air.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: August 1, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Kenneth James Harshbarger, Austin Keith Wickline