Patents by Inventor Gordon D. Denler

Gordon D. Denler 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).

  • Barrier structure for thermal ink-jet printheads
    Patent number: 4794410
    Abstract: A three-sided barrier structure (22), comprising three walls (24a-c), is provided in conjunction with a resistor (10) used in a thermal ink-jet printhead. Placement of the structure less than about 25 .mu.m from the resistor results in longer resistor life and an improvement in the static bubble purging ability of the printhead.
    Type: Grant
    Filed: June 2, 1987
    Date of Patent: December 27, 1988
    Assignee: Hewlett-Packard Company
    Inventors: Howard H. Taub, Gordon D. Denler
  • Thermal ink-jet head structure with orifice offset from resistor
    Patent number: 4794411
    Abstract: Off-setting the orifice (20) from the resistor (10) in a thermal ink-jet printhead provides improved print quality by controlling misdirection of first drops (26), second and subsequent drops (28) in multidrop printing, and for satellite drop control.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: December 27, 1988
    Assignee: Hewlett-Packard Company
    Inventors: Howard H Taub, Gordon D. Denler