Patents by Inventor Steven Leith

Steven Leith 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: 7378030
    Abstract: A method of forming an opening through a substrate having a first side and a second side opposite the first side includes forming a trench in the first side of the substrate, forming a mask layer within the trench, filling the trench with a fill material, forming a first portion of the opening in the substrate from the second side of the substrate toward the mask layer, and forming a second portion of the opening in the substrate through the mask layer and the fill material, including communicating the second portion of the opening with the first portion of the opening and the first side of the substrate.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: May 27, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Martha A. Truninger, Charles C. Haluzak, Steven Leith
  • Publication number: 20060264055
    Abstract: A method of forming a slot in a substrate comprises growing an oxide layer on a first side of a substrate, patterning and etching the oxide layer to form an opening, forming a material overlying the opening and the oxide layer, removing substrate material through a second side to a first distance from the first side, and anisotropic etching the substrate to create a substrate opening at the first side which is aligned with the opening in the oxide layer during anisotropic etching. The material overlying the opening and the oxide layer is selected so that an anisotropic etch rate of the substrate at an interface of the material and the substrate is greater than an anisotropic etch rate of the substrate at an interface of the oxide layer and the substrate.
    Type: Application
    Filed: July 24, 2006
    Publication date: November 23, 2006
    Inventors: Steven Leith, Jeffrey Obert, Eric Nikkel, Kenneth Kramer
  • Publication number: 20060094200
    Abstract: A method of forming a slot in a substrate comprises growing an oxide layer on a first side of a substrate, patterning and etching the oxide layer to form an opening, forming a material overlying the opening and the oxide layer, removing substrate material through a second side to a first distance from the first side, and anisotropic etching the substrate to create a substrate opening at the first side which is aligned with the opening in the oxide layer during anisotropic etching. The material overlying the opening and the oxide layer is selected so that an anisotropic etch rate of the substrate at an interface of the material and the substrate is greater than an anisotropic etch rate of the substrate at an interface of the oxide layer and the substrate.
    Type: Application
    Filed: October 29, 2004
    Publication date: May 4, 2006
    Inventors: Steven Leith, Jeffrey Obert, Eric Nikkel, Kenneth Kramer
  • Publication number: 20060030149
    Abstract: Embodiments of methods, apparatuses, devices, and/or systems for depositing a first material on photosensitive material are described.
    Type: Application
    Filed: August 6, 2004
    Publication date: February 9, 2006
    Inventors: Steven Leith, Gregory Herman
  • Publication number: 20050212868
    Abstract: The described embodiments relate to fluid-ejection devices and methods of forming same. One exemplary embodiment includes a plurality of fluid drop generators and associated electrically conductive paths, and at least one electron beam generation assembly configured to selectively direct at least one electron beam at individual electrically conductive paths sufficiently to cause fluid to be ejected from an associated fluid drop generator.
    Type: Application
    Filed: March 26, 2004
    Publication date: September 29, 2005
    Inventors: George Radominski, Steven Leith, Timothy Emery, Thomas Ottenheimer
  • Publication number: 20050157096
    Abstract: A method of forming an opening through a substrate having a first side and a second side opposite the first side includes forming a trench in the first side of the substrate, forming a mask layer within the trench, filling the trench with a fill material, forming a first portion of the opening in the substrate from the second side of the substrate toward the mask layer, and forming a second portion of the opening in the substrate through the mask layer and the fill material, including communicating the second portion of the opening with the first portion of the opening and the first side of the substrate.
    Type: Application
    Filed: January 24, 2005
    Publication date: July 21, 2005
    Inventors: Martha Truninger, Charles Haluzak, Steven Leith
  • Patent number: 6883903
    Abstract: A method of forming an opening through a substrate having a first side and a second side opposite the first side includes forming a trench in the first side of the substrate, forming a mask layer within the trench, filling the trench with a fill material, forming a first portion of the opening in the substrate from the second side of the substrate toward the mask layer, and forming a second portion of the opening in the substrate through the mask layer and the fill material, including communicating the second portion of the opening with the first portion of the opening and the first side of the substrate.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: April 26, 2005
    Inventors: Martha A. Truninger, Charles C. Haluzak, Steven Leith
  • Publication number: 20050012772
    Abstract: A method of forming an opening through a substrate having a first side and a second side opposite the first side includes forming spaced stops in the first side of the substrate, partially forming a first portion of the opening in the substrate from the second side by a first process, further forming the first portion of the opening in the substrate from the second side by a second process, including forming the first portion of the opening to the spaced stops, and forming a second portion of the opening in the substrate from the first side, including forming the second portion of the opening between the spaced stops.
    Type: Application
    Filed: July 15, 2003
    Publication date: January 20, 2005
    Inventors: Martha Truninger, Steven Leith, Jeffery Hess
  • Patent number: 6822379
    Abstract: An emission device includes a plurality of electron emitter structures of varied geometry that have a conducting layer deposited thereon. The conducting layer has openings located at tunneling sites for each of the electron emitter structures. The tunneling sites facilitate electron emissions from each of the varied geometry electron emitter structures upon voltage biasing of the conducting layer relative to the electron emitter structures.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: November 23, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Paul H. McClelland, David L. Neiman, Steven Leith, Niranjan Thirukkovalur
  • Publication number: 20040140732
    Abstract: A method of forming an opening through a substrate having a first side and a second side opposite the first side includes forming a trench in the first side of the substrate, forming a mask layer within the trench, filling the trench with a fill material, forming a first portion of the opening in the substrate from the second side of the substrate toward the mask layer, and forming a second portion of the opening in the substrate through the mask layer and the fill material, including communicating the second portion of the opening with the first portion of the opening and the first side of the substrate.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 22, 2004
    Inventors: Martha A. Truninger, Charles C. Haluzak, Steven Leith
  • Publication number: 20040061432
    Abstract: An emission device includes a plurality of electron emitter structures of varied geometry that have a conducting layer deposited thereon. The conducting layer has openings located at tunneling sites for each of the electron emitter structures. The tunneling sites facilitate electron emissions from each of the varied geometry electron emitter structures upon voltage biasing of the conducting layer relative to the electron emitter structures.
    Type: Application
    Filed: October 1, 2002
    Publication date: April 1, 2004
    Inventors: Paul H. McClelland, David L. Neiman, Steven Leith, Niranjan Thirukkovalur