Patents Represented by Attorney Chowdhury & Georgakis
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Patent number: 8340484Abstract: In a method and system to fabricate a compact optical device, a periodic group-delay device (PGDD) includes N optical input ports, N being a positive integer number, each port being configured to include one or more wavelength-division-multiplexing (WDM) channels; N corresponding optical output ports, each port being configured to include one or more WDM channels. The PGDD also includes a first slab waveguide region (FSWR) coupled to the N optical input ports, a second slab waveguide region (SSWR) coupled to the said N optical output ports, a first optical grating coupled to the FSWR, a second optical grating coupled to the SSWR, and; a third slab waveguide region (TSWR) coupled to at least one of the first and second optical gratings. The TSWR is configured to provide a configurable amount of dispersion to the N optical output ports. Optical signals carried by each WDM channel are processed concurrently and independently.Type: GrantFiled: January 5, 2010Date of Patent: December 25, 2012Assignee: Board of Regents, The University of Texas SystemInventors: Michael Vasilyev, Nikolai M. Stelmakh
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Patent number: 8316633Abstract: A method of reducing emissions by operating a diesel engine in a stoichiometric air-fuel ratio mode. To achieve an optimal stoichiometric mode, intake throttling, boost air intake control, fuel injection adjustments, and exhaust gas recirculation (EGR) are used. This mode of operation permits an aftertreatment system that has only an oxidation catalyst and a particulate filter.Type: GrantFiled: May 29, 2009Date of Patent: November 27, 2012Assignee: Southwest Research InstituteInventors: Magdi K. Khair, Stefan Simescu, Gary D. Neely, Vlad L. C. Ulmet
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Patent number: 8314576Abstract: Methods and apparatuses for detecting faults and optimizing phase currents in an electromechanical energy converter are disclosed. An example method comprises: measuring a current of a phase of the electromechanical energy converter, modeling the electromechanical energy converter with the current measurement input into a field reconstruction module, calculating a flux linkage of the electromechanical energy converter, comparing the flux linkage with a flux linkage from a no fault electromechanical energy converter, and optimizing the current of the phase of the electromechanical energy converter in response to the comparison. Other embodiments are described and claimed.Type: GrantFiled: July 17, 2010Date of Patent: November 20, 2012Assignee: Board of Regents, The University of Texas SystemInventors: Babak Fahimi, Amir Khoobroo
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Patent number: 8310243Abstract: A system and associated methods for acquiring and analyzing LEIS data from a buried structure, such as a pipeline. A special probe having adjustable electrodes is placed in the soil above the structure. A voltage is applied to the structure, causing more current to emanate from a coating defect than from intact coating. The probe electrodes acquire a response signal, which is analyzed to detect the defect.Type: GrantFiled: August 10, 2010Date of Patent: November 13, 2012Assignee: Southwest Research InstituteInventors: Pavan K. Shukla, Todd S. Mintz, Biswajit Dasgupta, Jay L. Fisher, Osvaldo Pensado-Rodriguez
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Patent number: 8303514Abstract: A method and apparatus for measuring the core temperature of an animal or human. Thermal black body emissions from the eyeball are detected, at one or more wavelengths selected on the basis of various factors, including the ability of that wavelength to reach the interior of the eyeball. An illumination marker shines a spot of light on the eyeball, such that the spot corresponds to the area from which emissions are being detected.Type: GrantFiled: January 8, 2008Date of Patent: November 6, 2012Assignee: Vital Accuracy PartnersInventors: Laird W. Laurence, Jack C. Laurence, James Derwin King, Michael R. Williams, James C. Lyman
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Patent number: 8301374Abstract: A landmark-based method of estimating the position of an AGV (autonomous ground vehicle) or conventional vehicle, which has an onboard database of landmarks and their locations coordinates. During travel, the AGV looks for and identifies landmarks. It navigates according to position estimations that are based on measured yaw rate and speed. When a landmark s encountered and recognized, its true location coordinates are looked up from the database. These true coordinates are then used to enhance position estimation accuracy between landmarks.Type: GrantFiled: August 25, 2009Date of Patent: October 30, 2012Assignee: Southwest Research InstituteInventors: Bapiraju Surampudi, Joe Steiber
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Patent number: 8291891Abstract: Improved exhaust gas recirculation system and methods that use one or more of the engine's cylinders as dedicated EGR cylinders. All of the exhaust from the dedicated EGR cylinders is recirculated back to the engine intake. Thus, the EGR rate is constant, but the EGR mass flow may be controlled by adjusting the air-fuel ratio of the dedicated EGR cylinders or by using various variable valve timing techniques.Type: GrantFiled: June 17, 2008Date of Patent: October 23, 2012Assignee: Southwest Research InstituteInventors: Terrence Francis Alger, II, Barrett Wade Mangold, Jess Witman Gingrich, Darius Mehta
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Patent number: 8292969Abstract: A system and method for electronic device protection. A method includes activating the electronic device; transferring control to a Basic Input/Output System (BIOS) component after activation; transferring control to a non-viewable component from the BIOS component; verifying that an application component operated correctly during a previous device activation; and continuing with activation of the electronic device if the application component operated correctly during the previous device activation.Type: GrantFiled: February 12, 2008Date of Patent: October 23, 2012Assignee: Softex IncorporatedInventors: Apurva Mahendrakumar Bhansali, Manoj Kumar Jain, Shradha Dube, Gayathri Rangarajan, Mehul Ramjibhai Patel, Rayesh Kashinath Raikar, Kamal Mansukhlal Dhanani, Ranjit Kapila, Elza Abraham Varghese, Thomas David Tucker
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Patent number: 8287603Abstract: An electronic device has software for protecting the electronic device from unauthorized utilization. When executed, the software causes the electronic device to execute an application component, wherein the application component is configured to automatically ascertain whether the electronic device has been reported stolen, based on information received from a server system. The electronic device also automatically determines whether the application component is operating correctly, and if so, automatically provides a basic input/output system (BIOS) component of the electronic device with information indicating that the application component is operating correctly. During a subsequent boot process for the electronic device, the software automatically prevents the electronic device from completing the boot process if the BIOS component does not find the information from the application component indicating that the application component was operating correctly. Other embodiments are described and claimed.Type: GrantFiled: August 7, 2009Date of Patent: October 16, 2012Assignee: Softex IncorporatedInventors: Apurva Mahendrakumar Bhansali, Manoj Kumar Jain, Shradha Dube, Gayathri Rangarajan, Mehul Ramjibhai Patel, Rayesh Kashinath Raikar, Kamal Mansukhlal Dhanani, Ranjit Kapila, Elza Abraham Varghese, Thomas David Tucker
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Patent number: 8267148Abstract: A hybrid ceramic/sand casting method of manufacturing a metal part. The method is especially suitable for parts having one or more very small internal gaps, such as might occur with a linear passage or round opening. These parts are formed using a hybrid core having at least one ceramic section and at least one sand section, with the ceramic section being used to create the internal gap. A mold cavity is created for the part, and the hybrid core is positioned in the mold. Molten metal is introduced into the mold, and after the metal cools, the core is removed, thereby forming the part with the internal gap.Type: GrantFiled: September 9, 2011Date of Patent: September 18, 2012Assignee: Southwest Research InstituteInventors: Marc C. Megel, Douglas A. McKee, Barry E. Westmoreland, Keith E. Denholm
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Patent number: 8252388Abstract: A method of performing plasma immersion ion processing (PIIP), particularly suited for processing three-dimensional objects. One or more such objects are placed in a conductive cage having solid or mesh walls. The cage completely encloses the objects. A voltage is applied to the cage, and the plasma is generated, resulting in the plasma being contained within the cage.Type: GrantFiled: May 15, 2008Date of Patent: August 28, 2012Assignee: Southwest Research InstituteInventors: Ronghua Wei, Chris Rincon, Edward Langa
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Patent number: 8248829Abstract: Methods and systems for phase current reconstruction are disclosed. An example method comprises: sampling a current from a power stage comprising: three phase legs, a current sensor to measure a dc-link current, and three more current sensors configured to measure three summations of currents for the power stage, storing the sampled current into a current stack if the sampled current comes from a survived sensor and is one of the phase currents from the switching state in the state stack, and reconstructing an unknown phase current by using the previously stored currents along with the sampled current to calculate the unknown phase current. Other embodiments are described and claimed.Type: GrantFiled: May 1, 2010Date of Patent: August 21, 2012Assignee: Board of Regents, The University of Texas SystemInventors: Babak Fahimi, Wei Jiang
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Patent number: 8240330Abstract: A compressor plate valve having a valve seat, a valve guard and a valve plate. The valve plate is moveable between the valve guard and valve seat to control fluid passage through passages in the seat, the guard, and the plate. A valve stem passes through the center of the valve guard and is attached to the center of the valve plate. The valve stem provides guidance for the plate valve to ensure parallel motion. In addition to sealing surfaces that oppose passages, the seat and plate have landing surfaces that provide a braking effect when the valve closes through squeeze film action.Type: GrantFiled: August 19, 2009Date of Patent: August 14, 2012Assignee: Southwest Research InstituteInventors: James J. Moore, Timothy C. Allison, Andrew H. Lerche
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Patent number: 8241368Abstract: In a method for securing and disabling an electronic device, the electronic device automatically executes a basic input/output system (BIOS) component of a security and tracking service during boot up. The BIOS component automatically determines whether an application component of the security and tracking service has requested disabling of the electronic device. In response to a determination that the application component has requested disabling of the electronic device, the BIOS component automatically displays system information and unlock key. The BIOS component also automatically prompts a user of the electronic device to enter an activation password to re-enable the electronic device. Other embodiments are described and claimed.Type: GrantFiled: July 29, 2010Date of Patent: August 14, 2012Assignee: Softex IncorporatedInventors: Apurva M. Bhansali, Manoj K. Jain, Shradha Dube, Gayathri Rangarajan, Mehul R. Patel, Rayesh K. Raikar, Kamal M. Dhanani, Ranjit Kapila, Elza A. Varghese, Thomas D. Tucker
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Patent number: 8212246Abstract: Methods and systems for electrochemically depositing doped metal oxide and metal chalcogenide films are disclosed. An example method includes dissolving a metal precursor into a solution, adding a halogen precursor to the solution, and applying a potential between a working electrode and a counter electrode of an electrochemical cell to deposit halogen doped metal oxide or metal chalcogenide onto a substrate. Another example method includes dissolving a zinc precursor into a solution, adding an yttrium precursor to the solution, and applying a potential between a working electrode and a counter electrode of an electrochemical cell to deposit yttrium doped zinc oxide onto a substrate. Other embodiments are described and claimed.Type: GrantFiled: August 13, 2009Date of Patent: July 3, 2012Assignee: Board of Regents, The University of Texas SystemInventors: Meng Tao, Xiaofei Han
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Patent number: 8214094Abstract: A hybrid system for powering a vehicle and a method of controlling the hybrid system. The hybrid system has both an internal combustion engine and a motor/generator. The vehicle is controlled in response to the combination of states of five control parameters of the vehicle: polarity of the MG (positive or negative), relative rotor/stator speed, fueling of engine (on or off), clutch (on or off), and transmission shift position (drive, reverse, park). A control unit receives data from the vehicle representing these states, and determines an associated control mode. In at least one of the control modes, the engine both drives the vehicles and provides power to the generator.Type: GrantFiled: December 3, 2008Date of Patent: July 3, 2012Assignee: Southwest Research InstituteInventors: Shizuo Sasaki, Jayant V. Sarlashkar
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Patent number: 8210210Abstract: A method and apparatus for modular pipe repair, the method comprising attaching two enclosure halves over a leak in a pipe to assemble a first repair enclosure and determining if another repair enclosure is needed for another leak in the pipe. If another repair enclosure is needed, the method further comprises drilling in the first repair enclosure drill hole passages in selected angled grooves thereof to connect to a primary groove in the enclosure, attaching a second repair enclosure to pipe, drilling in the second repair enclosure drill hole passages in selected angled grooves thereof to connect to the primary groove in the second enclosure, and attaching hub clamps to the first repair enclosure and the second repair enclosure. Finally, the method comprises injecting sealant into a plurality of injection points to fill the selected angled grooves and the primary grooves in the repair enclosures.Type: GrantFiled: July 1, 2010Date of Patent: July 3, 2012Assignee: Colt Services, LPInventors: John W. Clark, Jerry Robb
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Patent number: 8182548Abstract: An electronic device security and tracking system. A system includes one or more clients, wherein the clients are electronic devices; and a server computer system connected to each of the clients, wherein the server computer system is capable of tracking and locating each of the clients. In one aspect, the server computer system includes one or more web servers coupled to each of the clients, wherein the web servers include a website for the electronic device security and tracking system; one or more file transfer protocol servers coupled to each of the web servers; and one or more database servers connected to each of the web servers.Type: GrantFiled: July 2, 2008Date of Patent: May 22, 2012Assignee: Softex IncorporatedInventors: Apurva Mahendrakumar Bhansali, Manoj Kumar Jain, Shradha Dube, Gayathri Rangarajan, Mehul Ramjibhai Patel, Rayesh Kashinath Raikar, Kamal Mansukhlal Dhanani, Ranjit Kapila, Elza Abraham Varghese, Thomas David Tucker
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Patent number: 8179253Abstract: A system, method, and devices for locating an object, in which the system includes objects having location tags for projecting data about the object, a processing unit for receiving data about the object, and an algorithm for processing the data. Typically, the location tag includes at least one mobility sensor that projects sensory data about the object, a wireless transceiver that projects received signal strength indication data about the object and a microprocessor. The processing unit receiving the sensory data and the received signal strength indication data about the object. The algorithm processes the data, provides a location estimate about the object and thereby locates the object.Type: GrantFiled: September 21, 2009Date of Patent: May 15, 2012Assignee: Board of Regents, The University of Texas SystemsInventors: Gergely V. Zaruba, Manfred Huber, David Levine, Farhad A. Kamangar
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Patent number: 8163035Abstract: This disclosure relates to interference management for a security and tracking system of an electronic device. In one embodiment, during a startup process, an electronic device executes a security program and automatically attempts to access a first web server to ascertain whether the electronic devices has been reported as stolen. In response to an unsuccessful attempt to access the first web server, the electronic device may automatically attempt to access a second web server for data regarding operational status of the first web server. In response to unsuccessful attempts to access the first and second web servers, the electronic device may automatically present an interference alert to provide notification that the electronic device will be disabled if the electronic device continues to experience interference. The electronic device may be automatically disabled in response to a predetermined number of startup sequences with interference. Other embodiments are described and claimed.Type: GrantFiled: October 30, 2007Date of Patent: April 24, 2012Assignee: Softex IncorporatedInventors: Apurva Mahendrakumar Bhansali, Manoj Kumar Jain, Shradha Dube, Gayathri Rangarajan, Mehul Ramjibhai Patel, Rayesh Kashinath Raikar, Kamal Mansukhlal Dhanani, Ranjit Kapila, Elza Abraham Varghese, Thomas David Tucker