Patents by Inventor David L. Brown

David L. Brown 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: 8433919
    Abstract: A system and method provide efficient, secure, and highly reliable authentication for transaction processing and/or access control applications. A Personal Digital Key stores one or more profiles (e.g., a biometric profile) in a tamper-proof memory that is acquired in a secure trusted process. Biometric profiles comprise a representation of physical or behavioral characteristics that are uniquely associated with an individual that owns and carries the PDK. The PDK wirelessly transmits the biometric profile over a secure wireless transaction to a Reader for use in a biometric authentication process. The Reader compares the received biometric profile to a biometric input acquired at the point of transaction in order to determine if the transaction should be authorized.
    Type: Grant
    Filed: May 5, 2007
    Date of Patent: April 30, 2013
    Assignee: Proxense, LLC
    Inventors: John J. Giobbi, David L. Brown, Fred S. Hirt
  • Patent number: 8427185
    Abstract: A method of inline inspection of photovoltaic material for electrical anomalies. A first electrical connection is formed to a first surface of the photovoltaic material, and a second electrical connection is formed to an opposing second surface of the photovoltaic material. A localized current is induced in the photovoltaic material and properties of the localized current in the photovoltaic material are sensed using the first and second electrical connections. The properties of the sensed localized current are analyzed to detect the electrical anomalies in the photovoltaic material.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: April 23, 2013
    Assignee: KLA-Tencor Corporation
    Inventors: George H. Zapalac, Jr., Kirk J. Bertsche, David L. Brown, J. Kirkwood H. Rough, David A. Soltz, Yehiel Gotkis
  • Patent number: 8412949
    Abstract: A system and method provide efficient, secure, and highly reliable authentication for transaction processing and/or access control applications. A personal digital key (PDK) is programmed using a trusted programming device to initialize and/or register the PDK for use. In one embodiment, the initialization and registration processes are administered by a specialized trusted Notary to ensure the processes follow defined security procedures. In a biometric initialization, the programming device acquires a biometric input from a user and writes the biometric data to a tamperproof memory in the PDK. In registration, the Programmer communicates to one or more remote registries to create or update entries associated with the user PDK. Once initialized and registered, the PDK can be used for various levels of secure authentication processes.
    Type: Grant
    Filed: May 5, 2007
    Date of Patent: April 2, 2013
    Assignee: Proxense, LLC
    Inventors: John J. Giobbi, David L. Brown, Fred S. Hirt
  • Patent number: 8340672
    Abstract: A wireless synchronization device is used to coordinate the timing and activities of individual, possibly physically separated, wireless service providers with defined coverage area. Further, the synchronization information is used to coordinate the timing and activities of portable wireless client devices in an autonomous, wireless proximity sensing and data transfer network. Moreover, one or more of the wireless service providers can be arranged to simultaneously monitor broadcasts from the wireless synchronization device and communicate with one or more of the portable wireless client devices.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: December 25, 2012
    Assignee: Proxense, LLC
    Inventors: David L. Brown, Fred Hirt
  • Publication number: 20120314286
    Abstract: A pulse multiplier includes a polarizing beam splitter, a wave plate, and a set of mirrors. The polarizing beam splitter receives an input laser pulse. The wave plate receives light from the polarized beam splitter and generates a first set of pulses and a second set of pulses. The first set of pulses has a different polarization than the second set of pulses. The polarizing beam splitter, the wave plate, and the set of mirrors create a ring cavity. The polarizing beam splitter transmits the first set of pulses as an output of the pulse multiplier and reflects the second set of pulses into the ring cavity. This pulse multiplier can inexpensively reduce the peak power per pulse while increasing the number of pulses per second with minimal total power loss.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 13, 2012
    Applicant: KLA-Tencor Corporation
    Inventors: Yung-Ho Chuang, J. Joseph Armstrong, Justin Dianhuan Liou, Vladimir Dribinski, David L. Brown
  • Publication number: 20120300753
    Abstract: Wireless client devices within a wireless network exchange data with other wireless devices during particular time slots determined by the network. More particularly, the system generates and wirelessly broadcasts synchronization information to the client devices, where the synchronization information contains individual masks to be applied to bit fields of individual client devices, where said time slots are determined in accordance with the masked bit fields. In such a manner, client devices can be coordinated to communicate with the system in a dynamic real-time tiered manner.
    Type: Application
    Filed: June 7, 2012
    Publication date: November 29, 2012
    Applicant: Proxense, LLC
    Inventors: David L. Brown, Fred S. Hirt
  • Patent number: 8251141
    Abstract: Methods comprising providing a carrier fluid comprising an aqueous-based component, a water-soluble relative permeability modifier, and gravel particulates wherein the water-soluble relative permeability modifier suspends at least a portion of the gravel particulates; and introducing the carrier fluid into a well bore penetrating a subterranean formation, such that the gravel particulates form a gravel pack near the well bore. In some embodiments, the carrier fluid is substantially free of a viscosifying agent.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: August 28, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Larry S. Eoff, David L. Brown, Eldon D. Dalrymple, Paul S. Brown
  • Patent number: 8219129
    Abstract: Wireless client devices within a wireless network exchange data with other wireless devices during particular time slots determined by the network. More particularly, the system generates and wirelessly broadcasts synchronization information to the client devices, where the synchronization information contains individual masks to be applied to bit fields of individual client devices, where said time slots are determined in accordance with the masked bit fields. In such a manner, client devices can be coordinated to communicate with the system in a dynamic real-time tiered manner.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: July 10, 2012
    Assignee: Proxense, LLC
    Inventors: David L. Brown, Fred S. Hirt
  • Patent number: 8171528
    Abstract: A hybrid device includes a personal digital key (PDK) and a receiver-decoder circuit (RDC). The PDK and RDC of the hybrid device are coupled for communication with each other. In one embodiment, the hybrid device also provides a physical interconnect for connecting to other devices to send and receive control signals and data, and receive power. The hybrid device operates in one of several modes including, PDK only, RDC only, or PDK and RDC. This allows a variety of system configurations for mixed operation including: PDK/RDC, RDC/RDC or PDK/PDK. The present invention also includes a number of system configurations for use of the hybrid device including: use of the hybrid device in a cell phone; simultaneous use of the PDK and the RDC functionality of hybrid device; use of multiple links of hybrid device to generate an authorization signal, use of multiple PDK links to the hybrid device to generate an authorization signal; and use of the hybrid device for authorization inheritance.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: May 1, 2012
    Assignee: Proxense, LLC
    Inventor: David L. Brown
  • Patent number: 8167045
    Abstract: Methods comprising providing a polymerizable treatment fluid that comprises furfuryl alcohol monomer dispersed in an aqueous base fluid; introducing the polymerizable treatment fluid to a portion of a subterranean formation; and allowing the polymerizable treatment fluid to polymerize in the subterranean formation. The methods may include the use of contacting the furfuryl alcohol with an initiator to begin polymerization.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: May 1, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Jimmie D. Weaver, David L. Brown
  • Patent number: 8036152
    Abstract: In a wireless network, time slots may be configured in a manner such that the network directs portable wireless client devices to listen and respond within specific time slots. Because the time slots can be predicted or are known, one of the client devices may be configured to set a timer, enter a sleep mode, and then later awaken when a specific, time-slotted data interaction is required of the client device. Accordingly, battery power that would otherwise be consumed if the client device were active outside of the time slot may be saved.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: October 11, 2011
    Assignee: Proxense, LLC
    Inventors: David L. Brown, Fred S. Hirt
  • Publication number: 20110239366
    Abstract: Bedbug infestation-resistant furniture items comprise one or more substantially horizontal platform member each with one or more relatively vertical downwardly-depending leg members. Each platform member typically includes a frame surrounding an interior region and an infill expanse extending across the interior region and overlapping a relatively horizontal portion of the frame. Each of leg members typically includes a substantially lubricious surface portion substantially encircling the leg member to frustrate bedbug travel along the leg member. The legs may be splayed outwardly and may be provided with stops therealong to facilitate relatively dense stacking during stowage, and to simplify unstacking.
    Type: Application
    Filed: May 27, 2011
    Publication date: October 6, 2011
    Inventors: Michelle Boyle, David L. Brown
  • Publication number: 20110133750
    Abstract: A method of inline inspection of photovoltaic material for electrical anomalies. A first electrical connection is formed to a first surface of the photovoltaic material, and a second electrical connection is formed to an opposing second surface of the photovoltaic material. A localized current is induced in the photovoltaic material and properties of the localized current in the photovoltaic material are sensed using the first and second electrical connections. The properties of the sensed localized current are analyzed to detect the electrical anomalies in the photovoltaic material.
    Type: Application
    Filed: February 10, 2011
    Publication date: June 9, 2011
    Applicant: KLA-TENCOR CORPORATION
    Inventors: George H. Zapalac, JR., Kirk J. Bertsche, David L. Brown, J. Kirkwood H. Rough, David A. Soltz, Yehiel Gotkis
  • Publication number: 20110116077
    Abstract: Inspection of EUV patterned masks, blank masks, and patterned wafers generated by EUV patterned masks requires high magnification and a large field of view at the image plane. An EUV inspection system can include a light source directed to an inspected surface, a detector for detecting light deflected from the inspected surface, and an optic configuration for directing the light from the inspected surface to the detector. In particular, the detector can include a plurality of sensor modules. Additionally, the optic configuration can include a plurality of mirrors that provide magnification of at least 100× within an optical path less than 5 meters long. In one embodiment, the optical path is approximately 2-3 meters long.
    Type: Application
    Filed: June 18, 2010
    Publication date: May 19, 2011
    Applicant: KLA-Tencor Corporation
    Inventors: Yung-Ho Chuang, Richard W. Solarz, David R. Shafer, Bing-Ming Benjamin Tsai, David L. Brown
  • Publication number: 20110073982
    Abstract: An improved inspection system using back-side illuminated linear sensing for propagating charge through a sensor is provided. Focusing optics may be used with a back side illuminated linear sensor to inspect specimens, the back side illuminated linear sensor operating to advance an accumulated charge from one side of each pixel to the other side. The design comprises controlling voltage profiles across pixel gates from one side to the other side in order to advance charge between to a charge accumulation region. Controlling voltage profiles comprises attaching a continuous polysilicon gate across each pixel within a back side illuminated linear sensor array. Polysilicon gates and voltages applied thereto enable efficient electron advancement using a controlled voltage profile.
    Type: Application
    Filed: May 25, 2007
    Publication date: March 31, 2011
    Inventors: J. Joseph Armstrong, Yung-Ho Chuang, David L. Brown
  • Patent number: 7906972
    Abstract: A method of inline inspection of photovoltaic material for electrical anomalies. A first electrical connection is formed to a first surface of the photovoltaic material, and a second electrical connection is formed to an opposing second surface of the photovoltaic material. A localized current is induced in the photovoltaic material and properties of the localized current in the photovoltaic material are sensed using the first and second electrical connections. The properties of the sensed localized current are analyzed to detect the electrical anomalies in the photovoltaic material.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: March 15, 2011
    Assignee: KLA-Tencor Corporation
    Inventors: George H. Zapalac, Jr., Kirk J. Bertsche, David L. Brown, J. Kirkwood H. Rough, David A. Soltz, Yehiel Gotkis
  • Patent number: 7904718
    Abstract: A system and method provide efficient, secure, and highly reliable authentication for transaction processing and/or access control applications. A Personal Digital Key is a portable device carried by an individual that stores one or more profiles (e.g., a biometric profile) in a tamper-proof memory. When multiple PDKs are present at the point of the transaction, the system automatically determines which PDK to associate with the authentication and transaction processes. The differentiation decision is based on one or more differentiation metrics including distance information, location information, and detection duration information associated with each of the PDKs within range. Profile samples comprising subsets of the profile information are received to provide a quick correlation between a PDK an input sample (e.g., a subset of a biometric input). After determining which PDK should be associated with the transaction, a full authentication process is executed.
    Type: Grant
    Filed: May 5, 2007
    Date of Patent: March 8, 2011
    Assignee: Proxense, LLC
    Inventors: John J. Giobbi, David L. Brown, Fred S. Hirt
  • Patent number: 7902195
    Abstract: Compounds and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula I: wherein R2, R6A, R6B and R8 are as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, synthetic methods, and intermediates are also disclosed.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: March 8, 2011
    Assignee: Pharmacia & Upjohn Company LLC
    Inventors: Robert O Hughes, Andrew Simon Bell, David Graham Brown, Dafydd Owen, Michael John Palmer, Christopher Phillips, David L. Brown, Yvette M. Fobian, John N. Freskos, Steven E. Heasley, E. Jon Jacobsen, Todd Maddux, Brent Mischke, John M. Molyneaux, Joseph B. Moon, D. Joseph Rogier, Jr., Michael B. Tollefson, John K. Walker
  • Patent number: 7883003
    Abstract: A system and method provides efficient and highly reliable customer tracking. A Personal Digital Key (PDK) is associated with and carried by a user. The PDK wirelessly communicates with a receiver/decoder circuit (RDC) that can be coupled to a variety of electronic devices. The RDC authenticates the PDK based on received data and stores information to track customers and provide improved service. A PDK can be assigned to one more groups of PDKs based on the received data. Specific functions can then be executed based on the group assignments. In a casino environment, the system enables functions such as group gaming, back betting, event tracking, and notification services.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: February 8, 2011
    Assignee: Proxense, LLC
    Inventors: John J. Gobbi, Bryan Kelly, David L. Brown, Fred S. Hirt
  • Patent number: 7874998
    Abstract: The present invention relates to filtration devices and related methods of use. In particular, the present invention relates to implantable filtration devices used, for example, for filtering impurities from a body fluid of a subject.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: January 25, 2011
    Assignee: The Regents of the University of Michigan
    Inventors: H. David Humes, David L. Brown