Patents by Inventor David Clarke

David Clarke 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: 20120049162
    Abstract: An implementation of a single qubit phase gate for use in a quantum information processing scheme based on the ?=5/2 fractional quantum Hall (FQH) state is disclosed. Using sack geometry, a qubit consisting of two ?-quasiparticles. which may be isolated on respective antidots, may be separated by a constriction from the bulk of a two-dimensional electron gas in the ?=5/2 FQH state. An edge quasiparticle may induce a phase gate on the qubit. The number of quasiparticles that are allowed to traverse the edge path defines which gate is induced. For example, if a certain number of quasiparticles are allowed to traverse the path, then a ?/8 gate may be effected.
    Type: Application
    Filed: November 8, 2011
    Publication date: March 1, 2012
    Applicant: Microsoft Corporation
    Inventors: Parsa Bonderson, Kirill Shtengel, David Clarke, Chetan Nayak
  • Publication number: 20120005283
    Abstract: An email system may include an email server(s) configured to store email messages in a plurality of mailboxes, and a plurality of mobile wireless communications devices each configured to store email messages and an email synchronization indicator for a respective mailbox. The system may further include an email synchronization server(s) configured to establish synchronization sessions with the mobile wireless communications devices and retrieve the email synchronization indicators therefrom, and determine changes to the mailboxes and synchronize respective email messages between the mobile wireless communications devices and the email server(s) during the synchronization sessions based upon the retrieved email synchronization indicators.
    Type: Application
    Filed: July 2, 2010
    Publication date: January 5, 2012
    Applicant: Research In Motion Limited
    Inventors: Nathan Provo, David Clarke
  • Publication number: 20110306120
    Abstract: The present invention relates to the use of amphipathic polymers to enhance lateral flow and reagent mixing on assay devices. More specifically, the invention relates to use of an amphipathic polymer in assay methods including a device for determining the concentration of lipids in blood serum or plasma.
    Type: Application
    Filed: July 15, 2009
    Publication date: December 15, 2011
    Applicant: L3 TECHNOLOGY LIMITED
    Inventors: Anthony Nicholls, Laura Garcia, Mark Hudson, Gareth Jones, David Clarke
  • Publication number: 20110306072
    Abstract: The present invention relates to the use of surfaces that exhibit different surface energies wherein the difference in surface energies is configured to disrupt capillary laminar flow of a fluid travelling between the two surfaces The invention further relates to the use of such surfaces in assay methods including a device utilising same
    Type: Application
    Filed: July 15, 2009
    Publication date: December 15, 2011
    Applicant: L3 TECHNOLOGY LIMITED
    Inventors: Anthony Nicholls, Laura Garcia, Mark Hudson, Gareth Jones, David Clarke
  • Patent number: 8076666
    Abstract: An implementation of a single qubit phase gate for use in a quantum information processing scheme based on the ?=5/2 fractional quantum Hall (FQH) state is disclosed. Using sack geometry, a qubit consisting of two ?-quasiparticles. which may be isolated on respective antidots, may be separated by a constriction from the bulk of a two-dimensional electron gas in the ?=5/2 FQH state. An edge quasiparticle may induce a phase gate on the qubit. The number of quasiparticles that are allowed to traverse the edge path defines which gate is induced. For example, if a certain number of quasiparticles are allowed to traverse the path, then a ?/8 gate may be effected.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: December 13, 2011
    Assignee: Microsoft Corporation
    Inventors: Parsa Bonderson, Kirill Shtengel, David Clarke, Chetan Nayak
  • Patent number: 7997224
    Abstract: A payload deployment system for a vessel, such as a submarine, which includes a cable extending between a piston in a piston tube and an ejection element in an ejection tube, wherein the ejection tube is suitable for holding the payload, such as a torpedo. The system is arranged such that movement of the piston in the piston tube causes movement of the cable which, in turn, exerts a force on the ejection element to move it in the ejection tube to eject the payload from the ejection tube.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: August 16, 2011
    Assignee: Babcock Integrated Technology Limited
    Inventors: Bryan Jeffery Owen, Dale Michael Jeffreys, Peter David Clarke, Jeremy William Smith
  • Publication number: 20110173514
    Abstract: A method of transmitting data according to a data transmission protocol wherein the data is transmitted as a plurality of data frames and each data frame includes an error checking field comprising at least two sub-fields, the data of the first sub-field being formed by a first error checking method performed on data of the frame and the data of the second sub-field being formed by a second error checking method performed on the said data of the frame, the first and second methods being such that the data of the first sub-field has different error checking properties from those of the data of the second sub-field.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 14, 2011
    Applicant: SOLARFLARE COMMUNICATIONS, INC.
    Inventors: Steve L. Pope, Derek Roberts, David Riddoch, David Clarke
  • Publication number: 20110136643
    Abstract: A method for folding signatures is provided. The method includes the steps of forcing a trail edge of a first signature away from a folding cylinder using a signature support, tucking a second signature held by a gripper using a tucker at a first fold location and performing a mode change to tuck a further signature at a second fold location different from the first fold location, the mode change including moving the gripper and the signature support automatically with respect to the tucker. A signature support is also provided.
    Type: Application
    Filed: February 11, 2011
    Publication date: June 9, 2011
    Applicant: GOSS INTERNATIONAL AMERICAS, INC.
    Inventor: David Clarke Pollock
  • Patent number: 7934141
    Abstract: A method of transmitting data according to a data transmission protocol wherein the data is transmitted as a plurality of data frames and each data frame includes an error checking field comprising at least two sub-fields, the data of the first sub-field being formed by a first error checking method performed on data of the frame and the data of the second sub-field being formed by a second error checking method performed on the said data of the frame, the first and second methods being such that the data of the first sub-field has different error checking properties from those of the data of the second sub-field.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: April 26, 2011
    Assignee: Solarflare Communications, Inc.
    Inventors: Steve L. Pope, Derek Roberts, David Riddoch, David Clarke
  • Patent number: 7896795
    Abstract: A folder has a jaw cylinder and a folding cylinder including a gripper for gripping an edge of a first signature and a tucking blade for tucking the first signature into the jaw cylinder. The folding cylinder includes a signature support supporting a second signature against the jaw cylinder, the signature support and the gripper being movable automatically together with respect to the tucking blade. A transfer cylinder, method and signature support are also provided.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: March 1, 2011
    Assignee: Goss International Americas, Inc.
    Inventor: David Clarke Pollock
  • Publication number: 20100326408
    Abstract: A condensation control system for a vehicle comprises a short route (SR) target module, a long-route (LR) target module, and a humidity adjustment module. The SR target module controls a first opening target for opening of a first exhaust gas recirculation (EGR) valve and a first throttle valve based on a SR target and a SR adjustment. The LR target module controls a second opening target for opening of a second EGR valve and a second throttle valve based on a LR target and a LR adjustment. The humidity adjustment module adjusts the SR and LR adjustments based on a humidity adjustment when condensation is detected in a system that provides a gas to an engine for combustion and determines the humidity adjustment based on a difference between a humidity within the system and a predetermined humidity.
    Type: Application
    Filed: November 4, 2009
    Publication date: December 30, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: David Clarke, Anthony Truscott, Radek Motal
  • Publication number: 20100332075
    Abstract: A condensation monitoring system for a vehicle comprises a humidity estimation module and a condensation detection module. The humidity estimation module estimates a humidity in one of an air intake system and an exhaust gas recirculation (EGR) system associated with an engine of the vehicle. The condensation detection module generates a condensation signal indicating that condensation is present in the one of the air intake system and the EGR system when the humidity is greater than a predetermined humidity.
    Type: Application
    Filed: November 4, 2009
    Publication date: December 30, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: David Clarke, Anthony Truscott, Radek Motal
  • Publication number: 20100264402
    Abstract: An implementation of a single qubit phase gate for use in a quantum information processing scheme based on the ?=5/2 fractional quantum Hall (FQH) state is disclosed. Using sack geometry, a qubit consisting of two ?-quasiparticles. which may be isolated on respective antidots, may be separated by a constriction from the bulk of a two-dimensional electron gas in the ?=5/2 FQH state. An edge quasiparticle may induce a phase gate on the qubit. The number of quasiparticles that are allowed to traverse the edge path defines which gate is induced. For example, if a certain number of quasiparticles are allowed to traverse the path, then a ?/8 gate may be effected.
    Type: Application
    Filed: August 28, 2009
    Publication date: October 21, 2010
    Applicant: Microsoft Corporation
    Inventors: Parsa Bonderson, Kirill Shtengel, David Clarke, Chetan Nayak
  • Patent number: 7677281
    Abstract: Embodiments of the present invention are directed to a power router tool having an output shaft with a mechanism for attaching a working tool for engaging a work portion for performing a work operation thereon, comprising a generally cylindrical housing having a motor therein configured to drive the output shaft during operation, the housing having a nose portion from which the output shaft extends and a rear end portion opposite the nose portion, at least one switch in the housing operatively connected to the motor for controlling the operation thereof, an adjustable and removable depth guide mounted to the nose portion of the housing, the depth guide having an axial portion that is generally parallel to the output shaft and an end portion that is generally perpendicular to the output shaft, the axial and end portions having a construction that provided minimal visual obstruction during use.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: March 16, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Timothy Baker, Michael Beruscha, David Clarke, Robert Glenn, Kevin Wasielewski
  • Patent number: 7631467
    Abstract: A magnet retention clip for assembling modular wall panels includes a magnet holder, prongs insertable into the wall panel and stabilizers outwardly of the magnet holder.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: December 15, 2009
    Assignee: Illinois Tool Works Inc.
    Inventor: Martin Henry David Clarke
  • Patent number: 7596872
    Abstract: Embodiments of an accessory attachment for a rotary power hand tool are disclosed wherein the hand tool is of the type which has a tool housing with a preferably cylindrical nose portion, a motor having a motor drive shaft with a mounting coupling extending forwardly from the nose portion for receiving a drive shaft, the attachment including a housing having a first end portion configured to be mounted to the tool housing nose portion and an input shaft for coupling to the motor drive shaft, and having an enlarged second end portion oriented at a right angle relative to the first end portion and also having an output shaft coupled to the input shaft at a preferably right angle relative thereto, a rotary cutting wheel mounted to the output shaft and substantially disposed within the enlarged second end portion, excepting an exposed portion of the rotary cutting wheel for engaging a work surface, and a removable cover configured to engage said enlarged second end portion to at least partially enclose said rotar
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: October 6, 2009
    Assignee: Robert Bosch GmbH
    Inventors: David A. Clarke, Garth W. Prince
  • Publication number: 20090165892
    Abstract: Embodiments of the present invention are directed to a power router tool having an output shaft with a mechanism for attaching a working tool for engaging a work portion for performing a work operation thereon, comprising a generally cylindrical housing having a motor therein configured to drive the output shaft during operation, the housing having a nose portion from which the output shaft extends and a rear end portion opposite the nose portion, at least one switch in the housing operatively connected to the motor for controlling the operation thereof, an adjustable and removable depth guide mounted to the nose portion of the housing, the depth guide having an axial portion that is generally parallel to the output shaft and an end portion that is generally perpendicular to the output shaft, the axial and end portions having a construction that provided minimal visual obstruction during use.
    Type: Application
    Filed: December 26, 2007
    Publication date: July 2, 2009
    Inventors: Timothy Baker, Michael Beruscha, David Clarke, Robert Glenn, Kevin Wasielewski
  • Publication number: 20090158990
    Abstract: A payload deployment system for a vessel, such as a submarine, which includes a cable extending between a piston in a piston tube and an ejection element in an ejection tube, wherein the ejection tube is suitable for holding the payload, such as a torpedo. The system is arranged such that movement of the piston in the piston tube causes movement of the cable which, in turn, exerts a force on the ejection element to move it in the ejection tube to eject the payload from the ejection tube.
    Type: Application
    Filed: October 24, 2006
    Publication date: June 25, 2009
    Applicant: STRACHAN & HENSHAW LIMITED
    Inventors: Bryan Jeffery Owen, Dale Michael Jeffreys, Peter David Clarke, Jeremy William Smith
  • Publication number: 20080296491
    Abstract: Means and method of rapid detection of a compound of interest from an air sample is shown. An air sample is collected, and concentration of the compound of interest can be increased. A portable spectrometer, which preferably is a time-of-flight spectrometer, detects the presence of any of the compound. The system allows for rapid detection of the presence of a compound in an air sample in a field setting.
    Type: Application
    Filed: February 25, 2008
    Publication date: December 4, 2008
    Applicant: Arkansas State University Research and Development Institute
    Inventors: Robyn Hannigan, Roger Buchanan, David Clarke
  • Patent number: D619436
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: July 13, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Timothy Baker, Michael Beruscha, David Clarke, Robert Glenn, Kevin Wasielewski