Patents by Inventor Dan L Collier

Dan L Collier 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).

  • Pay-per-use printing
    Patent number: 6854839
    Abstract: In one embodiment, an imaging device includes an ink density information gathering procedure. An ink use calculation procedure receives input from the ink density information gathering procedure, allowing the amount of ink used to be calculated. A job cost procedure calculates a print job value based on the amount of ink used.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: February 15, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Dan L Collier, Jeremy Bunn, Charles Newby, Andrew Levy