Patents by Inventor P. Patel
P. Patel 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).
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Patent number: 9860340Abstract: A system comprising a plurality of service nodes, a controller and a network device in communication with the controller. Each of the plurality of service nodes is configured to support one or more service functions to establish a service function chain that includes a plurality of service functions to be performed by routing traffic among the plurality of service nodes. The controller is configured to generate provisioning information for the service function chain. The provisioning information includes at least one condition upon which a service function reclassification or branching operation is to be performed by at least one service node. The network device is in communication with the controller, and is configured to distribute the provisioning information for the service function chain to the plurality of service nodes using a distributed routing protocol.Type: GrantFiled: May 26, 2017Date of Patent: January 2, 2018Assignee: Cisco Technology, Inc.Inventors: Naiming Shen, Keyur P. Patel, Carlos M. Pignataro, James N. Guichard
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Patent number: 9854072Abstract: An egress packet modifier includes a script parser and a pipeline of processing stages. Rather than performing egress modifications using a processor that fetches and decodes and executes instructions in a classic processor fashion, and rather than storing a packet in memory and reading it out and modifying it and writing it back, the packet modifier pipeline processes the packet by passing parts of the packet through the pipeline. A processor identifies particular egress modifications to be performed by placing a script code at the beginning of the packet. The script parser then uses the code to identify a specific script of opcodes, where each opcode defines a modification. As a part passes through a stage, the stage can carry out the modification of such an opcode. As realized using current semiconductor fabrication process, the packet modifier can modify 200M packets/second at a sustained rate of up to 100 gigabits/second.Type: GrantFiled: August 4, 2015Date of Patent: December 26, 2017Assignee: Netronome Systems, Inc.Inventors: Chirag P. Patel, Gavin J. Stark
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Publication number: 20170360562Abstract: The present invention provides scaffolds comprising dual structural organization for bone and regeneration. Methods for fabricating and using the scaffold are also disclosed.Type: ApplicationFiled: December 9, 2015Publication date: December 21, 2017Inventors: Joseph Freeman, Brittany L. Taylor, Tea Arapovic, Dr., Pushpendra P. Patel
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Publication number: 20170353138Abstract: Disclosed examples include power conversion systems, computer readable mediums and methods for mitigating input filter resonance, in which a controller operates an active front end (AFE) rectifier in a first mode to turn a single rectifier switching device on and off and measures a filter voltage or current signal while all of the rectifier switches are off. The controller determines a resonant frequency based on a transient response of the measured voltage or current signal, and selectively adjusts a rectifier control parameter to mitigate filter resonance based on the resonant frequency.Type: ApplicationFiled: June 6, 2016Publication date: December 7, 2017Applicant: Rockwell Automation Technologies, Inc.Inventors: Shaofeng Zhang, Haihui Lu, Yogesh P. Patel, Ahmed Mohamed Sayed Ahmed, Lixiang Wei, Richard Lukaszewski
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Patent number: 9836445Abstract: An custom page server is provided with user preferences organized into templates stored in compact data structures and the live data used to fill the templates stored local to the page server which is handing user requests for custom pages. One process is executed on the page server for every request. The process is provided a user template for the user making the request, where the user template is either generated from user preferences or retrieved from a cache of recently used user templates. Each user process is provided access to a large region of shared memory which contains all of the live data needed to fill any user template. Typically, the pages served are news pages, giving the user a custom selection of stock quotes, news headlines, sports scores, weather, and the like. With the live data stored in a local, shared memory, any custom page can be built within the page server, eliminating the need to make requests from other servers for portions of the live data.Type: GrantFiled: October 31, 2007Date of Patent: December 5, 2017Assignee: EXCALIBUR IP, LLCInventors: Farzad Nazem, Ashvinkumar P. Patel
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Patent number: 9819255Abstract: Control apparatus, techniques and computer readable mediums are presented to mitigate LCL filter resonance issue for voltage source converters. Two level voltage source converter with and without passive damping of LCL filter are selected for the comparative study. Control algorithms are presented to estimate the source impedance based on variable carrier PWM. Estimated source impedance is used to tune the control of the VSC to avoid the resonance of LCL filter has been presented. In situations in which LCL resonance cannot be avoided by tuning the control parameters, energy efficient techniques are disclosed to provide selective passive damping to facilitate continued power conversion system operation without significant adverse impact on system performance.Type: GrantFiled: December 11, 2014Date of Patent: November 14, 2017Assignee: Rockwell Automation Technologies, Inc.Inventors: Yogesh P. Patel, Lixiang Wei
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Patent number: 9809130Abstract: An electric motor control system for a vehicle includes a vehicle speed module that determines a vehicle speed. A closed loop (CL) module determines a CL torque based on a difference between a target vehicle speed and the vehicle speed. A motor torque module determines a motor torque based on the CL torque and a motor torque request determined based on a position of an accelerator pedal. A switching control module controls switching of an inverter based on the motor torque to control application of power to an electric motor of the vehicle.Type: GrantFiled: March 24, 2016Date of Patent: November 7, 2017Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Adam J. Heisel, Christopher J. Twarog, Anthony H. Heap, Derek S. Bonderczuk, Krunal P. Patel, Lawrence A. Kaminsky, Nathaniel S. Michaluk, Robert L. Morris, Shaochun Ye, Jeffrey J. Waldner
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Publication number: 20170307180Abstract: A wall wash light fixture includes a housing having an upper wall, a first side wall, and a second side wall at least partially defining an interior. The first side wall and the second side wall each include a first mounting feature having a projection extending into the interior. A mounting bracket is positioned in the interior and releasably connected to the housing. A light emitter is connected to the mounting bracket. A lens has a base, a first arm extending from the base, and a second arm extending from the base. The first and second arms each include a second mounting feature configured to mate with the first mounting feature to releasably connect the lens to the housing.Type: ApplicationFiled: April 19, 2017Publication date: October 26, 2017Inventors: Thomas Veltri, Dhavalkumar P. Patel, David Rector
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Patent number: 9800134Abstract: Power conversion systems, filter circuits and integrated filter resistor and inductor apparatus are presented, in which a damping resistor is integrated with a filter inductor by winding joined resistor winding portions proximate to one another at least partially around a filter inductor core leg to form an integrated filter resistor and inductor apparatus for interconnection with filter capacitors to provide an input filter or an output filter for a motor drive or other power conversion system.Type: GrantFiled: February 25, 2015Date of Patent: October 24, 2017Assignee: Rockwell Automation Technologies, Inc.Inventors: Yogesh P. Patel, Lixiang Wei
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Patent number: 9796372Abstract: A method for controlling a powertrain of a vehicle includes calculating, via a controller, an optimal torque target for the powertrain as a function of system limits of the vehicle. The method includes commanding, via transmission of an output torque signal, an actual output torque of the powertrain to pursue or follow the calculated optimal torque target during a steady-state torque request condition. Additionally, the method includes detecting a predetermined vehicle event during the steady-state torque request condition, and shaping the output torque signal via the controller. A variable gain factor may be used in response to detection of the predetermined vehicle event to allow the output torque signal to temporarily deviate from the calculated optimal torque target during the steady-state torque request condition. A powertrain has an engine, an electric machine, and a controller programmed to execute the method.Type: GrantFiled: October 28, 2015Date of Patent: October 24, 2017Assignee: GM Global Technology Operations LLCInventors: Tayoung Choi, Krunal P Patel, Anthony H. Heap
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Publication number: 20170297553Abstract: A method for controlling a powertrain system in response to a command to execute a multi-state shift event for the transmission includes determining an initial output torque limit and determining an initial commanded output torque based upon the initial output torque limit. The powertrain system is controlled to generate torque in response to the initial commanded output torque prior to completion of a first state transition of the multi-state shift event that includes a commanded torque reduction. After completion of the first state transition of the multi-state shift event that includes the commanded torque reduction, a torque ramp rate is determined, and the initial commanded output torque is adjusted based upon the torque ramp rate. The powertrain system is controlled to generate torque in response to the initial commanded output torque and the adjusted initial commanded output torque during a remainder of the multi-state shift event.Type: ApplicationFiled: April 19, 2016Publication date: October 19, 2017Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Krunal P. Patel, Samantha Victoria Lado, Jy-Jen F. Sah, Anthony H. Heap
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Patent number: 9787210Abstract: Precharging systems and methods are presented for precharging a DC bus circuit in a power conversion system, in which precharging current is connected through a precharging resistance coupled between only a single AC input line and the DC bus circuit when the DC bus voltage is less than a non-zero threshold, and a controller individually activates controllable rectifier switching devices when the DC bus voltages greater than or equal to the threshold using DC gating or pulse width modulation to selectively provide a bypass path around the precharging resistance for normal load currents in the power conversion system.Type: GrantFiled: January 14, 2015Date of Patent: October 10, 2017Assignee: Rockwell Automation Technologies, Inc.Inventors: Yogesh P. Patel, Rangarajan Tallam, Brian P. Brown, Jiangang Hu, James J. Campbell
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Patent number: 9781035Abstract: A method is provided in one particular example and may include obtaining routing information for a plurality of Internet Protocol (IP) addresses in a first network that natively supports a first Internet protocol, the routing information for the plurality of IP addresses in the first network further comprising an additional IP address in the first network and an indication that the additional IP address in the first network is to be used as a tunnel endpoint within the first network for receiving data destined to any of the plurality of IP addresses in the first network; and sending data destined to any one of the plurality of IP addresses in the first network to the additional IP address in the first network.Type: GrantFiled: September 1, 2015Date of Patent: October 3, 2017Assignee: Cisco Technology, Inc.Inventors: Gunter Johan Van de Velde, William Mark Townsley, Ole Troan, Keyur P. Patel
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Publication number: 20170260326Abstract: Novel pentablock polymers having a PCL-PLA-PEG-PLA-PCL or PCL-PGA-PEG-PGA-PCL configuration, wherein PEG is polyethylene glycol, PCL is poly(?-caprolactone), PGA is poly(glycolic acid), and PLA is poly(lactic acid), and methods of making nanoparticles from the pentablock polymers, are disclosed. The invention is also directed to a method for preparing nanoparticle compositions comprised of polymers with high levels of bioactive or diagnostic agents.Type: ApplicationFiled: February 15, 2017Publication date: September 14, 2017Applicant: THE CURATORS OF THE UNIVERSITY OF MISSOURIInventors: ASHIM K. MITRA, SULABH P. PATEL, RAVI D. VAISHYA, VIBHUTI AGRAHARI
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Publication number: 20170264713Abstract: A system comprising a plurality of service nodes, a controller and a network device in communication with the controller. Each of the plurality of service nodes is configured to support one or more service functions to establish a service function chain that includes a plurality of service functions to be performed by routing traffic among the plurality of service nodes. The controller is configured to generate provisioning information for the service function chain. The provisioning information includes at least one condition upon which a service function reclassification or branching operation is to be performed by at least one service node. The network device is in communication with the controller, and is configured to distribute the provisioning information for the service function chain to the plurality of service nodes using a distributed routing protocol.Type: ApplicationFiled: May 26, 2017Publication date: September 14, 2017Inventors: Naiming Shen, Keyur P. Patel, Carlos M. Pignataro, James N. Guichard
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Patent number: 9722919Abstract: In one embodiment, a router located at an exit edge of an autonomous system (AS) receives a data packet in a data plane, and determines a destination of the data packet and an associated AS-path information to the destination. The router may then insert the AS-path information into the data packet, and forwards the data packet with the AS-path information toward the destination, such that a receiving device in a destination AS can validate whether the data packet was routed through a path that was secure from a control plane perspective based on a collection of one or more insertions of AS-path information.Type: GrantFiled: January 22, 2014Date of Patent: August 1, 2017Assignee: Cisco Technology, Inc.Inventors: Roque Gagliano, Alvaro E. Retana, Keyur P. Patel, Burjiz F. Pithawala, Ed Kern, Carlos M. Pignataro
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Patent number: 9723106Abstract: A system comprising a plurality of service nodes, a controller and a network device in communication with the controller. Each of the plurality of service nodes is configured to support one or more service functions to establish a service function chain that includes a plurality of service functions to be performed by routing traffic among the plurality of service nodes. The controller is configured to generate provisioning information for the service function chain. The provisioning information includes at least one condition upon which a service function reclassification or branching operation is to be performed by at least one service node. The network device is in communication with the controller, and is configured to distribute the provisioning information for the service function chain to the plurality of service nodes using a distributed routing protocol.Type: GrantFiled: August 28, 2015Date of Patent: August 1, 2017Assignee: Cisco Technology, Inc.Inventors: Naiming Shen, Keyur P. Patel, Carlos M. Pignataro, James N. Guichard
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Patent number: 9716308Abstract: A wideband multi-function phased array antenna aperture includes a plurality of low and high frequency phased array apertures that are asymmetrically dispersed over a largest aperture. Each aperture of the plurality of low and high frequency phased array apertures includes a plurality of frequency scaled radiating elements. The antenna aperture consolidates many functions into a single wideband multi-function phased array antenna where the use of frequency scaled elements reduces the total number of elements needed, thereby reducing the size, weight, power, cost and radar cross section when compared to conventional wideband phased array architectures.Type: GrantFiled: September 14, 2012Date of Patent: July 25, 2017Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Rashmi Mital, Jaganmohan B Rao, Dharmesh P. Patel, Gregory C Tavik
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Patent number: 9700578Abstract: It has been surprisingly discovered that administration of nitrite to subjects causes a reduction in blood pressure and an increase in blood flow to tissues. The effect is particularly beneficial, for example, to tissues in regions of low oxygen tension. This discovery provides useful treatments to regulate a subject's blood pressure and blood flow, for example, by the administration of nitrite salts. Provided herein are methods of administering a pharmaceutically-acceptable nitrite salt to a subject, for treating, preventing or ameliorating a condition selected from: (a) ischemia-reperfusion injury (e.g., hepatic or cardiac or brain ischemia-reperfusion injury); (b) pulmonary hypertension (e.g., neonatal pulmonary hypertension); or (c) cerebral artery vasospasm.Type: GrantFiled: January 5, 2015Date of Patent: July 11, 2017Assignees: The United States of America as represented by the Secretary of the Department of Health and Human Services, The Board of Supervisors of Louisiana State University and Agricultural and Mechanical College, Acting through the Louisiana State University Health Sciences Center, The UAB Research Foundation, Loma Linda University, Wake Forest UniversityInventors: Mark T. Gladwin, Alan N. Schechter, David J. Lefer, Rakesh P. Patel, Christian J. Hunter, Gordon G. Power, Daniel B. Kim-Shapiro, Ryszard Marek Pluta, Edward H. Oldfield, Richard O. Cannon, III
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Publication number: 20170170159Abstract: A method for manufacturing a plurality of die pairs includes providing a first wafer including a plurality of spaced apart first dies arranged in a first array including a first, first die row and a second, first die row spaced apart by a first portion of a first row channel; providing a second wafer including a plurality of spaced apart second dies arranged in a second array including a first, second die row and a second, second die row spaced apart by a second portion of the first row channel; connecting the first wafer to the second wafer with a connector assembly to form a wafer pair such that the first dies and the second dies cooperate to form the plurality of die pairs; positioning a first support assembly between the first wafer and the second wafer to rigidly support the first wafer relative to the second wafer; and cutting along the first row channel with a blade to separate the plurality of die pairs from one another.Type: ApplicationFiled: December 11, 2015Publication date: June 15, 2017Inventors: Srikanth Kulkarni, Viresh P. Patel