Patents Assigned to Lexmark International
  • Distributed programmed memory cells used as memory reference currents
    Patent number: 7142456
    Abstract: A memory circuit for an inkjet print head having a plurality of memory cells switchably connected to a source and configured in an array, wherein at least one of the memory cells is a reference memory cell and at least one of the remaining cells are data memory cells, and at least one sense amplifier adapted to compare at least one of a current and voltage received from the reference memory cell with at least one of a current and voltage received from one of the data memory cells and generate an output based on the comparison.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: November 28, 2006
    Assignee: Lexmark International
    Inventors: John G. Edelen, Paul W. Graf
  • Laser printer cartridge
    Patent number: D560713
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: January 29, 2008
    Assignee: Lexmark International
    Inventors: David Clay Blaine, James Anthany Carter, II, Thomas Eugene Pangburn, Dennis Matthew Puhalla, Matthew Lee Rogers