Patents by Inventor Philip S. Burkum

Philip S. Burkum 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 of producing an electroluminescent display
    Patent number: 7781023
    Abstract: A method of producing an electroluminescent display is provided. A medium is obtained from a stream of commerce. The medium is activated to form a pattern such that the medium emits light by electroluminescence according to the pattern in response to electrical energization.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: August 24, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Luis Aldarondo, Terry M. Lambright, Philip S. Burkum, Darrel E. Pozzesi
  • Screen
    Patent number: 7768704
    Abstract: A method and apparatus relating to a projection screen having a reflective face including gills are disclosed.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: August 3, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Philip S. Burkum
  • Color filter
    Patent number: 7674564
    Abstract: One embodiment of a color filter includes a substrate and a color filter pattern formed on the substrate, the color filter pattern including at least two, substantially identical patterned layers.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: March 9, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Bruce J. Jackson, Rodolfo Jodra-Barron, Philip S. Burkum
  • SCREEN
    Publication number: 20080094705
    Abstract: A method and apparatus relating to a projection screen having a reflective face including gills are disclosed.
    Type: Application
    Filed: October 19, 2006
    Publication date: April 24, 2008
    Inventor: Philip S. Burkum
  • Color whiteboard stylus and display
    Patent number: 7142350
    Abstract: This invention relates to a display device, the device comprising: a transparent surface; a suspension media disposed against the transparent surface; a plurality of color particles disposed throughout the suspension media, wherein each color of particle has a different time response to an applied electric field than each other color of particle; and an input instrument located substantially adjacent to the transparent surface such that the input instrument is operated to cause a portion of the color particles to migrate towards the transparent surface.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: November 28, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gregory J. May, Philip S. Burkum