Patents by Inventor Gregory T Hindman

Gregory T Hindman 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).

  • Patent number: 7543917
    Abstract: A method of forming a semiconductor device, the method including forming a substrate including a first surface having a non-doped region, forming an insulative material over the first surface of the substrate, forming a first conductive material over the first insulative material, forming an opening in the first conductive material that forms a path to the substrate that is substantially free of the first conductive material and the first insulative material, forming a second insulative material over the first conductive material, and forming a second conductive material over the second insulative material, wherein the second conductive material is formed in the opening and contacts the non-doped region of the substrate.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: June 9, 2009
    Assignee: Hewlett-Packard Development Comapny, L.P.
    Inventors: Simon Dodd, S. Jonathan Wang, Dennis W. Tom, Frank R. Bryant, Terry E. McMahon, Richard Todd Miller, Gregory T. Hindman
  • Patent number: 7150516
    Abstract: A fluid ejection device including: a substrate having a first surface having an non-doped region; a first insulative material disposed on a portion of the first surface, the first insulative material having a plurality of openings forming a path to the first surface; a first conductive material disposed on the first insulative material, the first conductive material being disposed so that the plurality of openings are substantially free of the first conductive material; a second insulative material disposed on the first conductive material and portions of the first insulative material, the second insulative material being disposed so that the plurality of openings are substantial free of the second insulative material and a second conductive material being disposed on second insulative material and within plurality of openings so that some of the second conductive material disposed upon the second insulative material is in electrical contact with the non-doped region on the substrate.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: December 19, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Simon Dodd, S. Jonathan Wang, Dennis W. Tom, Frank R. Bryant, Terry E. McMahon, Richard Todd Miller, Gregory T. Hindman
  • Patent number: 6441838
    Abstract: A thermal ink jet printhead that includes a thin film substrate including a plurality of thin film layers, a plurality of ink firing heater resistors defined in the plurality of thin film layers, a patterned tantalum layer disposed on said plurality of thin film layers, a barrier adhesion layer disposed on the patterned tantalum layer, an ink barrier layer disposed over the barrier adhesion layer, and respective ink chambers formed in the ink barrier layer over respective thin film resistors, each chamber formed by a chamber opening in barrier layer, the barrier adhesion layer more particularly comprises a tantalum nitride layer or a deposited tantalum, carbon, fluorine, and oxygen containing layer that is formed pursuant to exposure of the patterned tantalum layer to a plasma that includes a fluorinated hydrocarbon such as carbon tetrafluoride (CF4), fluoroform (CHF3), hexafluoroethane (C2F6), difluoromethane (CH2F2), pentafluoroethane (C2HF5), tetrafluoroethane (C2H2F4), or octafluorobutene (C4F8).
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: August 27, 2002
    Assignee: Hewlett-Packard Company
    Inventors: Gregory T. Hindman, Domingo A. Figueredo, Ronald L. Enck
  • Patent number: 6286939
    Abstract: A thermal ink jet printhead that includes a thin film substrate including a plurality of thin film layers, a plurality of ink firing heater resistors defined in the plurality of thin film layers, a patterned tantalum layer disposed on said plurality of thin film layers, a barrier adhesion layer disposed on the patterned tantalum layer, an ink barrier layer disposed over the barrier adhesion layer, and respective ink chambers formed in the ink barrier layer over respective thin film resistors, each chamber formed by a chamber opening in barrier layer, the barrier adhesion layer more particularly comprises a tantalum nitride layer or a deposited tantalum, carbon, fluorine, and oxygen containing layer that is formed pursuant to exposure of the patterned tantalum layer to a plasma that includes a fluorinated hydrocarbon such as carbon tetrafluoride (CF4), fluoroform (CHF3), hexafluoroethane (C2F6), difluoromethane (CH2F2), pentafluoroethane (C2HF5), tetraf luoroethane (C2H2F4), or octafluorobutene (C4F8).
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: September 11, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Gregory T. Hindman, Domingo A. Figueredo, Ronald L. Enck
  • Patent number: 6209991
    Abstract: A thermal ink jet printhead that includes a thin film substrate including a plurality of thin film layers, a plurality of ink firing heater resistors defined in the plurality of thin film layers, a patterned tantalum carbide layer disposed on the plurality of thin film layers, an ink barrier layer disposed over the tantalum carbide layer, and respective ink chambers formed in the ink barrier layer over respective thin film resistors, each chamber formed by a chamber opening in barrier layer. The tantalum carbide layer forms an oxidation and wear resistance layer and/or a barrier adhesion layer.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: April 3, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Michael J Regan, Brian J Keefe, Ali Emamjomeh, Roger J Kolodziej, Ulrich E Hess, John P Whitlock, Domingo A Figueredo, Gregory T Hindman
  • Patent number: 6155674
    Abstract: A thermal ink jet printhead that includes an adhesion interface between a silicon carbide layer of a thin film substrate and a polymer ink barrier layer in the vicinity of ink chambers formed in the polymer ink barrier layer, and an adhesion interface between a silicon carbide layer disposed on the ink barrier layer and an orifice plate. An intervening adhesion promoter can be located between the silicon carbide layer of the thin film substrate and the polymer ink barrier layer, and between the silicon carbide layer disposed on the ink barrier layer and the orifice plate.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: December 5, 2000
    Assignee: Hewlett-Packard Company
    Inventors: Domingo A Figueredo, Gregory T Hindman, Brian J Keefe, Ali Emamjomeh, Roger J Kolodziej, Grant Allen Webster, Terri I. Chapman
  • Patent number: 5443713
    Abstract: A process for fabricating a thin-film structure using a transparent substrate is disclosed. A first structure, such as a ring, is formed of a dielectric material on a conductive material layer. The conductive material is partially removed, such as within the center of the ring structure. A photoresist material pillar is formed to fill the center of the ring structure, protruding above the ring structure rim. Such structures are useful as mandrel structures in the forming of precision components, such as nozzle plates, mesh ink filter screens, and the like, for ink-jet pens.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: August 22, 1995
    Assignee: Hewlett-Packard Corporation
    Inventor: Gregory T. Hindman