Patents by Inventor Dennis Lazaroff

Dennis Lazaroff 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: 8425787
    Abstract: A method of fabricating a bridge beam of an inkjet printhead employs a cavity formed under the bridge beam and an etch-stop layer that limits a back-surface recess formation. The method includes forming a cavity that connects between a bottom of a pair of trenches in and extending from a front surface of a substrate and depositing an etch-stop layer at a bottom of the cavity. The method further includes forming a recess in a back surface of the substrate, the recess exposing the etch-stop layer and the etch-stop layer limiting a depth of the formed recess. The method further includes removing the exposed etch-stop layer to connect the cavity and the recess, the bridge beam being a portion of the substrate above the formed cavity and between the trenches.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: April 23, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alfred I-Tsung Pan, Kenneth Vandenberghe, Dennis Lazaroff
  • Publication number: 20110049092
    Abstract: A method of fabricating a bridge beam of an inkjet printhead employs a cavity formed under the bridge beam and an etch-stop layer that limits a back-surface recess formation. The method includes forming a cavity that connects between a bottom of a pair of trenches in and extending from a front surface of a substrate and depositing an etch-stop layer at a bottom of the cavity. The method further includes forming a recess in a back surface of the substrate, the recess exposing the etch-stop layer and the etch-stop layer limiting a depth of the formed recess. The method further includes removing the exposed etch-stop layer to connect the cavity and the recess, the bridge beam being a portion of the substrate above the formed cavity and between the trenches.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 3, 2011
    Inventors: Alfred I-Tsung Pan, Kenneth Vandenberghe, Dennis Lazaroff
  • Publication number: 20060234412
    Abstract: A packaged MEMS device is fabricated by providing a first substrate, forming the MEMS device on the first substrate (the MEMS device including at least one element initially held immobile by a sacrificial material), optionally removing a portion of the sacrificial material without releasing the element, providing a second substrate, forming at least one release port, bonding the second substrate to the first substrate, and removing the sacrificial material through the release port to release the element.
    Type: Application
    Filed: April 19, 2005
    Publication date: October 19, 2006
    Applicant: Hewlett-Packard Development Company, L.P. Intellectual Property Administration
    Inventor: Dennis Lazaroff
  • Publication number: 20060228892
    Abstract: A discontinuous layer is formed on a transparent substrate of a semiconductor material. Portions of the transparent substrate are exposed at discontinuities in the discontinuous layer. The discontinuous layer and the exposed portions of the transparent substrate are etched at least until the discontinuous layer is completely removed, thereby forming peaks and valleys in the substrate.
    Type: Application
    Filed: April 6, 2005
    Publication date: October 12, 2006
    Inventors: Dennis Lazaroff, Arthur Piehl, Bhavin Shah
  • Patent number: 7067215
    Abstract: A method of making a fuel cell includes the following steps. A pattern is placed on a base surface to create a predetermined topography on the base surface. An anode layer, a cathode layer and/or an electrolyte layer is/are deposited over the pattern. Areas of higher topography are removed from areas of lower topography using chemical mechanical planarization to form a predetermined fuel cell structure.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: June 27, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis Lazaroff, Peter Mardilovich, David Champion, Gregory S Herman
  • Patent number: 7033694
    Abstract: Various embodiments of the invention are directed toward a fuel cell assembly comprising a fuel cell casing and one or more fuel cell elements comprised of electrode and electrolyte material. The fuel cell casing is configured with threads and the fuel cell elements can be threadingly engaged in the fuel cell casing.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: April 25, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Champion, Dennis Lazaroff, Peter Mardilovich, Gregory S Herman, James O'Neil
  • Publication number: 20050106436
    Abstract: Various embodiments of the invention comprise a dual chamber fuel cell element. The fuel cell element generally comprises a dual chamber fuel cell stack layer comprising anode, cathode and electrolyte materials deposited on one side of a substrate.
    Type: Application
    Filed: November 14, 2003
    Publication date: May 19, 2005
    Inventor: Dennis Lazaroff
  • Publication number: 20050106772
    Abstract: A method of forming a MEMS device includes depositing a conductive material on a substructure, forming a first sacrificial layer over the conductive material, including forming a substantially planar surface of the first sacrificial layer, and forming a first element over the substantially planar surface of the first sacrificial layer, including communicating the first element with the conductive material through the first sacrificial layer. In addition, the method includes forming a second sacrificial layer over the first element, including forming a substantially planar surface of the second sacrificial layer, forming a support through the second sacrificial layer to the first element after forming the second sacrificial layer, including, filling the support, and forming a second element over the support and the substantially planar surface of the second sacrificial layer.
    Type: Application
    Filed: December 21, 2004
    Publication date: May 19, 2005
    Inventors: Michael Monroe, Eric Nikkel, Dennis Lazaroff
  • Publication number: 20050089733
    Abstract: A ceramic film is useful as ion-conducting ceramics, electrodes, hard ceramic coatings, transparent conducting oxides, transparent semiconducting oxides, ferroelectric oxides, and dielectric oxides. The ceramic film may be produced from a liquid precursor solution.
    Type: Application
    Filed: October 28, 2003
    Publication date: April 28, 2005
    Inventors: David Punsalan, Dennis Lazaroff, Christopher Beatty
  • Patent number: 6821848
    Abstract: Tunnel-junction structures are fabricated by any of a set of related methods that form two or more tunnel junctions simultaneously. The fabrication methods disclosed are compatible with conventional CMOS fabrication practices, including both single damascene and dual damascene processes. The simultaneously formed tunnel junctions may have different areas. In some embodiments, tub-well structures are formed with sloped sidewalls. In some embodiments, an oxide-metal-oxide film stack on the sidewall of a tub-well is etched to form the tunnel junctions. Memory circuits, other integrated circuit structures, substrates carrying microelectronics, and other electronic devices made by the methods are disclosed.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: November 23, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis Lazaroff, Kenneth M. Kramer, James E. Ellenson, Neal W. Meyer, David Punsalan, Kurt Ulmer, Peter Fricke, Andrew Koll, Andrew L. Van Brocklin
  • Publication number: 20040197634
    Abstract: Various embodiments of the invention are directed toward a fuel cell assembly comprising a fuel cell casing and one or more fuel cell elements comprised of electrode and electrolyte material. The fuel cell casing is configured with threads and the fuel cell elements can be threadingly engaged in the fuel cell casing.
    Type: Application
    Filed: April 7, 2003
    Publication date: October 7, 2004
    Inventors: David Champion, Dennis Lazaroff, Peter Mardilovich, Gregory S. Herman, James O'Neil
  • Publication number: 20040086767
    Abstract: A fuel cell assembly and reactant distribution structure and method of making the same.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 6, 2004
    Inventors: Dennis Lazaroff, David Champion, Gregory S. Herman, Peter Mardilovich
  • Publication number: 20040086754
    Abstract: A method of making a fuel cell includes the following steps. A pattern is placed on a base surface to create a predetermined topography on the base surface. An anode layer, a cathode layer and/or an electrolyte layer is/are deposited over the pattern. Areas of higher topography are removed from areas of lower topography using chemical mechanical planarization to form a predetermined fuel cell structure.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 6, 2004
    Inventors: Dennis Lazaroff, Peter Mardilovich, David Champion, Gregory S. Herman
  • Publication number: 20040067404
    Abstract: A fuel cell assembly and reactant distribution structure and method of making the same.
    Type: Application
    Filed: October 3, 2002
    Publication date: April 8, 2004
    Inventors: Dennis Lazaroff, David Champion, Gregory S. Herman, Peter Mardilovich
  • Publication number: 20030186468
    Abstract: Tunnel-junction structures are fabricated by any of a set of related methods that form two or more tunnel junctions simultaneously. The fabrication methods disclosed are compatible with conventional CMOS fabrication practices, including both single damascene and dual damascene processes. The simultaneously formed tunnel junctions may have different areas. In some embodiments, tub-well structures are formed with sloped sidewalls. In some embodiments, an oxide-metal-oxide film stack on the sidewall of a tub-well is etched to form the tunnel junctions. Memory circuits, other integrated circuit structures, substrates carrying microelectronics, and other electronic devices made by the methods are disclosed.
    Type: Application
    Filed: October 31, 2002
    Publication date: October 2, 2003
    Inventors: Dennis Lazaroff, Kenneth M. Kramer, James E. Ellenson, Neal W. Meyer, David Punsalan, Kurt Ulmer, Peter Fricke, Andrew Koll, Andrew L. Van Brocklin
  • Patent number: 6605821
    Abstract: The invention includes an electronic memory structure. The electronic memory structure includes a substrate. A substantially planar first conductor is formed adjacent to the substrate. An interconnection layer is formed adjacent to the first conductor. A phase change material element is formed adjacent to the interconnection layer. The interconnection layer includes a conductive interconnect structure extending from the first conductor to the phase change material element. The interconnect structure includes a first surface physically connected to the first conductor. The interconnect structure further includes a second surface attached to the phase change material element. The second surface area of the second surface is substantially smaller than a first surface area of the first surface. A substantially planar second conductor is formed adjacent to the phase change material element.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: August 12, 2003
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Heon Lee, Dennis Lazaroff, Neal Meyer, Jim Ellenson, Ken Kramer, Kurt Ulmer, David Pursalan, Peter Fricke, Andrew Koll, Andy Van Brockin