Patents by Inventor Kenneth E. Gray
Kenneth E. Gray 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: 9819540Abstract: An extensible software defined network (SDN) controller is described that provides an application-aware framework that enable a variety of different user applications to communicate with the controller and that allows the controller to automatically configure devices in a network based on the needs of the applications. For example, the controller includes a plurality of different northbound interfaces that enable a variety of different user applications to communicate with the controller. The controller also includes multiple southbound protocols for configuring and enabling functionality in network devices based on the communications with the user applications.Type: GrantFiled: September 19, 2016Date of Patent: November 14, 2017Assignee: Juniper Networks, Inc.Inventors: Nitin Bahadur, Kenneth E. Gray
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Patent number: 9461877Abstract: A network device is described that receives information from separate database systems including a physical network inventory system that stores first topology data specifying resources and links within a network and a traffic engineering system that stores second topology data specifying the resources and links that are deployed within the network and data specifying traffic engineered paths configured to forward network traffic through the network. The network device aggregates the received information into a topology resource management system that stores third topology data specifying at least a current role of each of the resources and links. The network device determines a modification to at least one of the traffic engineered paths based on the third topology data, including an adjustment to the current role of at least one of the resources to change the forwarding of the network traffic. The network device outputs provisioning information based on the modification.Type: GrantFiled: September 26, 2013Date of Patent: October 4, 2016Assignee: Juniper Networks, Inc.Inventors: Thomas D. Nadeau, Nitin Bahadur, Kenneth E. Gray
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Patent number: 9450817Abstract: An extensible software defined network (SDN) controller is described that provides an application-aware framework that enable a variety of different user applications to communicate with the controller and that allows the controller to automatically configure devices in a network based on the needs of the applications. For example, the controller includes a plurality of different northbound interfaces that enable a variety of different user applications to communicate with the controller. The controller also includes multiple southbound protocols for configuring and enabling functionality in network devices based on the communications with the user applications.Type: GrantFiled: September 30, 2013Date of Patent: September 20, 2016Assignee: Juniper Networks, Inc.Inventors: Nitin Bahadur, Kenneth E. Gray
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Patent number: 9413634Abstract: In general, techniques are described for improving network path computation for requested paths that include a chain of service points that provide network services to traffic flows traversing the requested path through a network along the service chain. In some examples, a controller network device receives a request for network connectivity between a service entry point and a service exit point for a service chain for application to packet flows associated to the service chain. The device, for each pair of the service points in the particular order and using the active topology information, computes at least one end-to-end sub-path through the sub-network connecting the pair of the service points according to a constraint and computes, using the at least one end-to-end sub-path for each pair of the service points, a service path between the service entry point and the service exit point for the service chain.Type: GrantFiled: January 10, 2014Date of Patent: August 9, 2016Assignee: Juniper Networks, Inc.Inventors: Thomas D. Nadeau, Kenneth E. Gray
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Patent number: 9258238Abstract: A centralized controller provides dynamic end-to-end network path setup across multiple network layers. In particular, the centralized controller manages end-to-end network path setup that provisions a path at both the transport network layer (e.g., optical) and the service network layer (e.g., IP/MPLS). The centralized controller performs path computation for an optical path at the transport network layer and for a path at the service network layer that transports network traffic on the underlying optical transport path, based on information obtained by the centralized controller from the underlying network components at both layers.Type: GrantFiled: August 30, 2013Date of Patent: February 9, 2016Assignee: Juniper Networks, Inc.Inventors: Nitin Bahadur, Kenneth E. Gray, Thomas D. Nadeau, Alia K. Atlas
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Publication number: 20150200838Abstract: In general, techniques are described for improving network path computation for requested paths that include a chain of service points that provide network services to traffic flows traversing the requested path through a network along the service chain. In some examples, a controller network device receives a request for network connectivity between a service entry point and a service exit point for a service chain for application to packet flows associated to the service chain. The device, for each pair of the service points in the particular order and using the active topology information, computes at least one end-to-end sub-path through the sub-network connecting the pair of the service points according to a constraint and computes, using the at least one end-to-end sub-path for each pair of the service points, a service path between the service entry point and the service exit point for the service chain.Type: ApplicationFiled: January 10, 2014Publication date: July 16, 2015Applicant: Juniper Networks, Inc.Inventors: Thomas D. Nadeau, Kenneth E. Gray
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Publication number: 20150063802Abstract: A centralized controller provides dynamic end-to-end network path setup across multiple network layers. In particular, the centralized controller manages end-to-end network path setup that provisions a path at both the transport network layer (e.g., optical) and the service network layer (e.g., IP/MPLS). The centralized controller performs path computation for an optical path at the transport network layer and for a path at the service network layer that transports network traffic on the underlying optical transport path, based on information obtained by the centralized controller from the underlying network components at both layers.Type: ApplicationFiled: August 30, 2013Publication date: March 5, 2015Applicant: Juniper Networks, Inc.Inventors: Nitin Bahadur, Kenneth E. Gray, Thomas D. Nadeau, Alia K. Atlas
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Patent number: 8256532Abstract: Embodiments of systems, program product, and methods for controlling drilling fluid pressures are provided. These embodiments, for example, can provide dynamic density control with highly adaptive, real-time, process-control and are scalable to any rig, large or small, on land or water. Combined static and dynamic stresses and displacements can be determined continuously at strategic locations in and around the wellbore of a well so that insitu and operational induced pressure window limitations at specific weak-points or other locations of interest are controlled.Type: GrantFiled: January 31, 2011Date of Patent: September 4, 2012Assignee: Board of Regents, The University of Texas SystemInventor: Kenneth E. Gray
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Patent number: 8026487Abstract: A system includes a solid state source of THz radiation and a detector. The source of THz radiation may be based on a superconducting material, such as materials containing one or more Josephson junctions (e.g. BSCCO). The source may include a crystal of superconducting material on which a mesa of superconducting material is formed. The resonant coupling between the Josephson oscillations and the fundamental cavity mode of the mesa may lead to synchronization of the Josephson junctions and emission of powerful THz radiation. The mesa may be formed and/or handled such that THz radiation can be emitted by the material without requiring application of an external magnetic field (e.g. the mesa may include a non-uniform compositional gradient, a non-uniform shape, may have radiation non-uniformly applied to the mesa, etc.).Type: GrantFiled: December 21, 2007Date of Patent: September 27, 2011Assignee: UChicago Argonne, LLCInventors: Alexei E. Koshelev, Lutfi Ozyuzer, Cihan Kurter, Ulrich Welp, Wai-Kwong Kwok, Kenneth E. Gray
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Publication number: 20110125333Abstract: Embodiments of systems, program product, and methods for controlling drilling fluid pressures are provided. These embodiments, for example, can provide dynamic density control with highly adaptive, real-time, process-control and are scalable to any rig, large or small, on land or water. Combined static and dynamic stresses and displacements can be determined continuously at strategic locations in and around the wellbore of a well so that insitu and operational induced pressure window limitations at specific weak-points or other locations of interest are controlled.Type: ApplicationFiled: January 31, 2011Publication date: May 26, 2011Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventor: Kenneth E. Gray
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Patent number: 7908034Abstract: Embodiments of systems, program products, and methods for controlling drilling fluid parameters are provided. These embodiments, for example, provide dynamic density control with highly adaptive, real-time, process-control and are scalable to any rig, large or small, on land or water. Combined static and dynamic stresses and displacements can be determined continuously at strategic locations in and around the wellbore of a well so that insitu and operational induced pressure window limitations at specific weak-points or other locations of interest are controlled.Type: GrantFiled: June 30, 2006Date of Patent: March 15, 2011Assignee: Board of Regents, The University of Texas SystemInventor: Kenneth E. Gray
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Publication number: 20100264312Abstract: A system includes a solid state source of THz radiation and a detector. The source of THz radiation may be based on a superconducting material, such as materials containing one or more Josephson junctions (e.g. BSCCO). The source may include a crystal of superconducting material on which a mesa of superconducting material is formed. The resonant coupling between the Josephson oscillations and the fundamental cavity mode of the mesa may lead to synchronization of the Josephson junctions and emission of powerful THz radiation. The mesa may be formed and/or handled such that THz radiation can be emitted by the material without requiring application of an external magnetic field (e.g. the mesa may include a non-uniform compositional gradient, a non-uniform shape, may have radiation non-uniformly applied to the mesa, etc.).Type: ApplicationFiled: December 21, 2007Publication date: October 21, 2010Inventors: Alexei E. Koshelev, Lutfi Ozyuzer, Cihan Kurter, Ulrich Welp, Wai-Kwong Kwok, Kenneth E. Gray
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Patent number: 7715892Abstract: A compact, solid-state THz source based on the driven Josephson vortex lattice in a highly anisotropic superconductor such as Bi2Sr2CaCu2O8 that allows cw emission at tunable frequency. A second order metallic Bragg grating is used to achieve impedance matching and to induce surface emission of THz-radiation from a Bi2Sr2CaCu2O8 sample. Steering of the emitted THz beam is accomplished by tuning the Josephson vortex spacing around the grating period using a superimposed magnetic control field.Type: GrantFiled: October 26, 2009Date of Patent: May 11, 2010Assignee: Uchicago Argonne, LLCInventors: Ulrich Welp, Alexei E. Koshelev, Kenneth E. Gray, Wai-Kwong Kwok, Vitalii Vlasko-Vlasov
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Publication number: 20100041559Abstract: A compact, solid-state THz source based on the driven Josephson vortex lattice in a highly anisotropic superconductor such as Bi2Sr2CaCu2O8 that allows cw emission at tunable frequency. A second order metallic Bragg grating is used to achieve impedance matching and to induce surface emission of THz-radiation from a Bi2Sr2CaCu2O8 sample. Steering of the emitted THz beam is accomplished by tuning the Josephson vortex spacing around the grating period using a superimposed magnetic control field.Type: ApplicationFiled: October 26, 2009Publication date: February 18, 2010Inventors: Ulrich WELP, Alexei E. Koshelev, Kenneth E. Gray, Wai-Kwong Kwok, Vitalii Vlasko-Vlasov
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Patent number: 7610071Abstract: A compact, solid-state THz source based on the driven Josephson vortex lattice in a highly anisotropic superconductor such as Bi2Sr2CaCu2O8 that allows cw emission at tunable frequency. A second order metallic Bragg grating is used to achieve impedance matching and to induce surface emission of THz-radiation from a Bi2Sr2CaCu2O8 sample. Steering of the emitted THz beam is accomplished by tuning the Josephson vortex spacing around the grating period using a superimposed magnetic control field.Type: GrantFiled: March 27, 2007Date of Patent: October 27, 2009Assignee: UChicago Argonne, LLCInventors: Ulrich Welp, Alexei E. Koshelev, Kenneth E. Gray, Wai-Kwong Kwok, Vitalii Vlasko-Vlasov
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Publication number: 20090194330Abstract: Embodiments of systems, program products, and methods for controlling drilling fluid parameters are provided. These embodiments, for example, provide dynamic density control with highly adaptive, real-time, process-control and are scalable to any rig, large or small, on land or water. Combined static and dynamic stresses and displacements can be determined continuously at strategic locations in and around the wellbore of a well so that insitu and operational induced pressure window limitations at specific weak-points or other locations of interest are controlled.Type: ApplicationFiled: June 30, 2006Publication date: August 6, 2009Inventor: Kenneth E. Gray
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Patent number: 4873482Abstract: A microvertex particle detector for use in a high energy physic collider including a plurality of parallel superconducting thin film strips separated from a superconducting ground plane by an insulating layer to form a plurality of superconducting waveguides. The microvertex particle detector indicates passage of a charged subatomic particle by measuring a voltage pulse measured across a superconducting waveguide caused by the transition of the superconducting thin film strip from a superconducting to a non-superconducting state in response to the passage of a charged particle. A plurality of superconducting thin film strips in two orthogonal planes plus the slow electromagnetic wave propogating in a superconducting transmission line are used to resolve N.sup.2 ambiguity of charged particle events.Type: GrantFiled: July 28, 1988Date of Patent: October 10, 1989Assignee: The United States of America as represented by the United States Department of EnergyInventor: Kenneth E. Gray
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Patent number: 4770006Abstract: A helium dilution refrigeration system operable over a limited time period, and recyclable for a next period of operation. The refrigeration system is compact with a self-contained pumping system and heaters for operation of the system. A mixing chamber contains .sup.3 He and .sup.4 He liquids which are precooled by a coupled container containing .sup.3 He liquid, enabling the phase separation of a .sup.3 He rich liquid phase from a dilute .sup.3 He-.sup.4 He liquid phase which leads to the final stage of a dilution cooling process for obtaining low temperatures. The mixing chamber and a still are coupled by a fluid line and are maintained at substantially the same level with the still cross sectional area being smaller than that of the mixing chamber. This configuration provides maximum cooling power and efficiency by the cooling period ending when the .sup.Type: GrantFiled: May 1, 1987Date of Patent: September 13, 1988Assignee: Arch Development Corp.Inventors: Patrick R. Roach, Kenneth E. Gray
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Patent number: 4157555Abstract: A superconducting transistor is formed by disposing three thin films of superconducting material in a planar parallel arrangement and insulating the films from each other by layers of insulating oxides to form two tunnel junctions. One junction is biased above twice the superconducting energy gap and the other is biased at less than twice the superconducting energy gap. Injection of quasiparticles into the center film by one junction provides a current gain in the second junction.Type: GrantFiled: November 7, 1977Date of Patent: June 5, 1979Assignee: The United States of America as represented by the United States Department of EnergyInventor: Kenneth E. Gray