Patents by Inventor Christopher E. Holland

Christopher E. Holland 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).

  • Publication number: 20200343081
    Abstract: The disclosure includes an outer electrode and an inner electrode. The outer electrode defines an inner volume and is configured to receive injected electrons through at least one aperture. The inner electrode positioned in the inner volume. The outer electrode and inner electrode are configured to confine the received electrons in orbits around the inner electrode in response to an electric potential between the outer electrode and the inner electrode. The apparatus does not include a component configured to generate an electron-confining magnetic field.
    Type: Application
    Filed: July 11, 2018
    Publication date: October 29, 2020
    Inventors: Sterling Eduardo McBride, Joey J. Michalchuk, Christopher E. Holland, Ashish Chaudhary, Winston K. Chan
  • Publication number: 20130342098
    Abstract: Micro-fabricated charge-emission devices comprise an electrically conductive gate electrode with an aperture, an electrically conductive base electrode, a charge-emitting microstructure extending from a surface in electrical contact with the base electrode and terminating near the aperture of the gate electrode, and a dielectric layer stack disposed between the base electrode and the gate electrode. The dielectric layer stack comprises a first dielectric layer and a second dielectric layer. The first dielectric layer is disposed between the second dielectric layer and the base electrode. The first dielectric layer is of a different selectively etchable dielectric material than the second dielectric layer. The dielectric layer stack h formed therein a cavity within which the charge-emitting emitting microstructure is disposed. The cavity has a corrugated wall shaped by the first dielectric layer undercutting the second dielectric layer.
    Type: Application
    Filed: March 13, 2012
    Publication date: December 26, 2013
    Applicant: SRI INTERNATIONAL
    Inventors: Christopher E. Holland, Charles A. Spindt
  • Patent number: 8410678
    Abstract: Described is a micro-fabricated charged particle emission device including a substrate and a plurality of charged particle emission sites formed in the substrate. A path extends between each emission site and a source of liquid metal. Each path is coated with a wetting layer of non-oxidizing metal for wetting the liquid metal. Exemplary non-oxidizing metals that may be used to make the wetting layer include gold and platinum. The wetting layer is sufficiently thin such that some liquid metal is able to flow to each emission site despite any chemical interaction between the liquid metal and the non-oxidizing metal of the wetting layer.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: April 2, 2013
    Assignee: SRI International
    Inventors: Christopher E. Holland, Paul R. Schwoebel, Charles A. Spindt, Eric M. Pearson, Victor M. Aguero
  • Publication number: 20120212120
    Abstract: Described is a micro-fabricated charged particle emission device including a substrate and a plurality of charged particle emission sites formed in the substrate. A path extends between each emission site and a source of liquid metal. Each path is coated with a wetting layer of non-oxidizing metal for wetting the liquid metal. Exemplary non-oxidizing metals that may be used to make the wetting layer include gold and platinum. The wetting layer is sufficiently thin such that some liquid metal is able to flow to each emission site despite any chemical interaction between the liquid metal and the non-oxidizing metal of the wetting layer.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 23, 2012
    Applicant: SRI INTERNATIONAL
    Inventors: Christopher E. Holland, Paul R. Schwoebel, Charles A. Spindt, Eric M. Pearson, Victor M. Aguero
  • Patent number: 8138665
    Abstract: Described is a micro-fabricated charged particle emission device including a substrate and a plurality of charged particle emission sites formed in the substrate. A path extends between each emission site and a source of liquid metal. Each path is coated with a wetting layer of non-oxidizing metal for wetting the liquid metal. Exemplary non-oxidizing metals that may be used to provide the wetting layer include gold and platinum. The wetting layer is sufficiently thin such that some liquid metal is able to flow to each emission site despite any chemical interaction between the liquid metal and the non-oxidizing metal of the wetting layer.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: March 20, 2012
    Assignee: SRI International
    Inventors: Christopher E. Holland, Paul R. Schwoebel, Charles A. Spindt, Eric M. Pearson, Victor M. Aguero
  • Publication number: 20090278434
    Abstract: Described is a micro-fabricated charged particle emission device including a substrate and a plurality of charged particle emission sites formed in the substrate. A path extends between each emission site and a source of liquid metal. Each path is coated with a wetting layer of non-oxidizing metal for wetting the liquid metal. Exemplary non-oxidizing metals that may be used to provide the wetting layer include gold and platinum. The wetting layer is sufficiently thin such that some liquid metal is able to flow to each emission site despite any chemical interaction between the liquid metal and the non-oxidizing metal of the wetting layer.
    Type: Application
    Filed: July 9, 2007
    Publication date: November 12, 2009
    Applicant: SRI INTERNATIONAL
    Inventors: Christopher E. Holland, Paul R. Schwoebel, Charles A. Spindt, Eric M. Pearson, Victor M. Aguero
  • Patent number: 6879162
    Abstract: Described are a method and system for dispensing a fluid. A fluid-dispensing device includes a substrate and a plurality of nozzles formed in the substrate. Each nozzle has an open-ended tip and a fluid-conducting channel between the tip and a source of fluid. A non-conducting spacer is on the substrate and electrically isolates a gate electrode from the substrate. The gate electrode is located adjacent to the tip of at least one of the nozzles to effect dispensing of the fluid in that nozzle in response to a voltage applied between the gate electrode and the nozzle or fluid in the nozzle. In one embodiment, the gate electrode includes a plurality of individually addressable gate electrodes used for selectively actuating nozzles.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: April 12, 2005
    Assignee: SRI International
    Inventors: Victor M. Aguero, Elizabeth J. Brackmann, Jose P. Joseph, Christopher E. Holland, Charles A. Spindt, Paul R. Schwoebel, Eric M. Pearson
  • Publication number: 20030146757
    Abstract: Described are a method and system for dispensing a fluid. A fluid-dispensing device comprises a substrate and a plurality of nozzles formed in the substrate. Each nozzle has an open-ended tip and a fluid-conducting channel between the tip and a source of fluid. A non-conducting spacer is on the substrate and electrically isolates a gate electrode from the substrate. The gate electrode is located adjacent to the tip of at least one of the nozzles to effect dispensing of the fluid in that nozzle in response to a voltage applied between the gate electrode and the nozzle or fluid in the nozzle. In one embodiment, the gate electrode includes a plurality of individually addressable gate electrodes used for selectively actuating nozzles.
    Type: Application
    Filed: October 31, 2002
    Publication date: August 7, 2003
    Inventors: Victor M. Aguero, Elizabeth J. Brackmann, Jose P. Joseph, Christopher E. Holland, Charles A. Spindt, Paul R. Schwoebel, Eric M. Pearson
  • Patent number: 5277067
    Abstract: An improved pressure sensor element and pressure sensor array is formed by a cathode layer, a cathode tip attached to the cathode layer, and an anode layer opposing the cathode layer. The magnitude of the electron current flowing between the cathode tip and the anode layer is dependant on the field strength at the cathode tip, which is dependant on the separation between the cathode tip and the anode layer. As a deflectable anode layer is deflected towards the cathode tip, the field strength increases, causing a corresponding change in the magnitude of the flow of electrons. The cathode tip is separated from the anode layer such that electron current is produced at relatively low voltages by tunneling or field emission. The exact method of current production is selected by controlling the initial separation between the anode layer and the cathode tip.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: January 11, 1994
    Assignee: Colin Electronics Co., Ltd.
    Inventors: Christopher E. Holland, Peter J. Hesketh
  • Patent number: 5163328
    Abstract: An improved pressure sensor element and pressure sensor array is formed by a cathode layer, a cathode tip attached to the cathode layer, and an anode layer opposing the cathode layer. The magnitude of the electron current flowing between the cathode tip and the anode layer is dependant on the field strength at the cathode tip, which is dependant on the separation between the cathode tip and the anode layer. As a deflectable anode layer is deflected towards the cathode tip, the field strength increases, causing a corresponding change in the magnitude of the flow of electrons. The cathode tip is separated from the anode layer such that electron current is produced at relatively low voltages by tunneling or field emission. The exact method of current production is selected by controlling the initial separation between the anode layer and the cathode tip.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: November 17, 1992
    Assignee: Colin Electronics Co., Ltd.
    Inventors: Christopher E. Holland, Peter J. Hesketh
  • Patent number: 5089292
    Abstract: A field emission cathode device is disclosed herein and includes an array of electron emitting cathode tips supported by a base electrode or electrodes, a gate electrode spaced from and associated with each tip, and dielectric material located between each gate electrode and the base electrode of its associated cathode tip for insulating the two from one another. The device also includes means for establishing an electric field between the gate electrodes and tips sufficient to cause the tips to emit current. In addition, each electron emitting cathode tip is coated with an electrically conductive material that reduces its electron work function. At the same time, the dielectric material which insulates the base electrodes and gate electrodes from one another is maintained sufficiently free of the electron work function reducing material so as not to result in any appreciable current leakage between the base and gate electrodes. The specific method of coating the cathode tips is also disclosed herein.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: February 18, 1992
    Assignee: Coloray Display Corporation
    Inventors: John M. MaCaulay, C. A. Spindt, Christopher E. Holland, Ivor Brodie
  • Patent number: 5063327
    Abstract: A flat panel display of the field emission cathode type having polyimide spacers or pillars separating the emitting surface and display face of the same and a method of forming the spacers by integrated circuit techniques.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: November 5, 1991
    Assignee: Coloray Display Corporation
    Inventors: Ivor Brodie, Henry R. Gernick, Christopher E. Holland, Helmut A. Moessner
  • Patent number: 5015912
    Abstract: A matrix-addressed flat panel display is described, utilizing cathodes of the field emission type. The cathodes are incorporated into the display backing structure, and energize corresponding cathodoluminescent areas on a face plate. The face plate is spaced 40 microns from the cathode arrangement in the preferred embodiment, and a vacuum is provided in the space between the plate and such cathodes. Spacers in the form of legs interspersed among the pixels maintain the spacing, and electrical connections for the bases of the cathodes are diffused sections through the backing structure.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: May 14, 1991
    Assignee: SRI International
    Inventors: Charles A. Spindt, Christopher E. Holland
  • Patent number: 4923421
    Abstract: A flat panel display of the field emission cathode type is described having polyimide spacers or pillars separating the emitting surface and display face of the same. A method of forming the spacers by integrated circuit techniques also is described.
    Type: Grant
    Filed: July 6, 1988
    Date of Patent: May 8, 1990
    Assignee: Innovative Display Development Partners
    Inventors: Ivor Brodie, Henry R. Gurnick, Christopher E. Holland, Helmut A. Moessner
  • Patent number: 4857799
    Abstract: A matrix-addressed flat panel display is described, utilizing cathodes of the field emission type. The cathodes are incorporated into the display backing structure, and energize corresponding cathodoluminescent areas on a face plate. The face plate is spaced 40 microns from the cathode arrangement in the preferred embodiment, and a vacuum is provided in the space between the plate and such cathodes. Spacers in the form of legs interspersed among the pixels maintain the spacing, and electrical connections for the bases of the cathodes are diffused sections through the backing structure.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: August 15, 1989
    Assignee: SRI International
    Inventors: Charles A. Spindt, Christopher E. Holland
  • Patent number: 4765864
    Abstract: A method is set forth of constructing an electrochemical cell from a crystalline slab having front and back sides facing generally away from one another. Masking layers are provided covering the front and back sides of the slab and a back resist layer is provided covering the front masking layer, the front and resist layer having at least one opening therethrough exposing a portion of the masking layer therebehind. A passage is etched through the exposed part of the back masking layer and extending into the slab to terminate at the front masking layer. A conductor is deposited in the passage. A second front masking layer is formed covering the front side other than where the passage terminates. The masking layers are etched away opposite the passage sufficiently to expose the conductor. The technology provides electrochemical cells either on or completely below the surface of a slab, for example a silicon slab. Integrated circuitry can be provided on the side of the slab removed from the electrochemistry.
    Type: Grant
    Filed: July 15, 1987
    Date of Patent: August 23, 1988
    Assignee: SRI International
    Inventors: Christopher E. Holland, Eugene R. Westerberg, Marc J. Madou, Takaaki Otagawa