Patents by Inventor David A. Lopez

David A. Lopez 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: 20190218271
    Abstract: The invention relates to mutant light-inducible ion channels having improved properties as compared to the parent channel, nucleic acid constructs encoding same, expression vectors carrying the nucleic acid construct, cells comprising said nucleic acid construct or expression vector, and their respective uses, as well as non-human animals comprising the mutant light-inducible ion channel, the nucleic acid construct or the expression vector as disclosed herein.
    Type: Application
    Filed: June 2, 2017
    Publication date: July 18, 2019
    Inventors: Ernst Bamberg, Phil Wood, Thomas Mager, Tobias Moser, David Lopez de la Morena
  • Publication number: 20190157026
    Abstract: The electric switch comprises at least one key (4) that pivots about a pivoting axis (5) and a base (2) provided with at least one electric connection and disconnection actuation point (3), so that the pivoting of the key 4 causes the application of pressure to at least one actuation point 3 and causes the electric connection or disconnection, and it is characterized in that the base (2) comprises at least one pivoting actuator (6). A low-cost mechanical type electric switch is obtained which automatically returns to its rest position, and which for the user has the same sensation as an electronic type electric switch.
    Type: Application
    Filed: June 1, 2017
    Publication date: May 23, 2019
    Inventors: David LOPEZ LOPEZ, Jordi ARDERIU COSTAS, Francesc Xavier VASQUEZ VILLA, Carlos FERRER MARTINEZ
  • Publication number: 20190150152
    Abstract: A node is configured for connection to a massive multiple-input, multiple-output (MIMO) array to provide spatially multiplexed channels in an unlicensed frequency band. The node includes a memory configured to store samples of non-spatially filtered signals received by the node during a first listen-before-talk (LBT) operation used to acquire the unlicensed frequency band. The node also includes a processor configured to determine, based on a number of previously stored samples, a duration of a silent time interval during which the node collects samples of non-spatially filtered signals and stores the samples in the memory. The node further includes a transceiver configured to perform a second LBT operation to acquire the unlicensed frequency band using a spatial filter determined based on the samples stored in the memory.
    Type: Application
    Filed: January 10, 2019
    Publication date: May 16, 2019
    Inventors: Giovanni Geraci, Adrian J. Garcia Rodriguez, Lorenzo Galati Giordano, David Lopez Perez
  • Patent number: 10257831
    Abstract: A node is configured for connection to a massive multiple-input, multiple-output (MIMO) array to provide spatially multiplexed channels in an unlicensed frequency band. The node includes a memory configured to store samples of non-spatially filtered signals received by the node during a first listen-before-talk (LBT) operation used to acquire the unlicensed frequency band. The node also includes a processor configured to determine, based on a number of previously stored samples, a duration of a silent time interval during which the node collects samples of non-spatially filtered signals and stores the samples in the memory. The node further includes a transceiver configured to perform a second LBT operation to acquire the unlicensed frequency band using a spatial filter determined based on the samples stored in the memory.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: April 9, 2019
    Assignee: Alcatel Lucent
    Inventors: Giovanni Geraci, Adrian J. Garcia Rodriguez, Lorenzo Galati Giordano, David Lopez Perez
  • Publication number: 20190078235
    Abstract: The present disclosure provides a linear low density polyethylene composition, tapes, fibers and filaments, artificial turfs, and method of making the same. The linear low density polyethylene composition according to the present disclosure exhibits each of the following properties: (1) a CEF fraction from 70 to 90° C. of equal to or greater than 80% of the total CEF fractions; (2) a melt index, I2, measured according to ASTM D 1238 (2.16 kg@190° C.), in the range of equal to or greater than 2.0 g/10 min and equal to or less than 5.0 g/10 min; and (3) a melt flow ratio, I10/I2, of equal to or less than 6.7.
    Type: Application
    Filed: March 3, 2017
    Publication date: March 14, 2019
    Applicant: Dow Global Technologies LLC
    Inventors: David Lopez, Cornelis F.J. Den Doelder, Jesus Nieto, Barbara Bonavoglia, Frederik E. Gemoets
  • Patent number: 10212631
    Abstract: A radio access network element includes a cellular interface and a processor. The cellular interface is configured to communicate with the user equipment via a cellular link. The processor is configured execute computer readable instructions to cause the radio access network element to: transmit a plurality of probe packets to the user equipment via an IP tunnel between the radio access network element and the user equipment through a wireless local area network access point; receive a probe packet response from the user equipment, the probe packet response being indicative of a connection quality of the IP tunnel between the radio access network element and the user equipment; and determine whether to switch from a first traffic routing mode to a second traffic routing mode based on the probe packet response from the user equipment.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: February 19, 2019
    Assignee: Nokia of America Corporation
    Inventors: Jonathan Ling, David Lopez-Perez, Bong Ho Kim, Doru Calin, Vasudevan Subramanian
  • Publication number: 20190023883
    Abstract: An ethylene/alpha-olefin copolymer composition having a density from 0.935 to 0.955 g/cc; a ratio of weight average molecular weight to number average molecular weight, Mw/Mn, of from 3 to 10; a z-average molecular weight, Mz, from 200 kg/mol to 500 kg/mol; and a PENT value of greater than 500 hours at 80° C. and 2.4 MPa; wherein when the composition is formed into a monolayer pipe the pipe has a pipe hydrostatic strength of greater than 100 hours at 20° C. and 12.0 MPa. Also provided is a pipe or pipe fitting comprising the ethylene/alpha-olefin copolymer composition.
    Type: Application
    Filed: February 22, 2017
    Publication date: January 24, 2019
    Applicant: Dow Global Technologies LLC
    Inventors: Jian Wang, Mridula Kapur, Mehmet Demirors, Douglas S. Ginger, Philip P. Fontaine, Amaia Bastero, David Lopez
  • Publication number: 20190016066
    Abstract: A fiber composite laying device for producing a fiber composite scrim for forming a fiber composite component has a laying head which is designed or configured to continuously supply a reinforcement fiber band, a compaction roller which is designed or configured to receive the supplied reinforcement fiber band, lay the band on a laying surface and press the band onto the laying surface at an average compaction pressure, and pressure sensors which are arranged on the compaction roller and are designed or configured to detect a local compaction pressure on the laid reinforcement fiber band.
    Type: Application
    Filed: July 12, 2018
    Publication date: January 17, 2019
    Inventors: Katharina Schlegel, Alois Friedberger, David Lopez-Bravo
  • Patent number: 10149305
    Abstract: A method, in a heterogeneous telecommunications network, for mitigating uplink-downlink (UL-DL) interference between a first half-duplex user equipment (UE) operable to communicate using a first frequency resource in an uplink to a first full-duplex node, and a second half duplex UE operable to receive downlink communications from a second full-duplex node, the method including receiving, at the second node, an indication of actual or potential UL-DL interference generated by the first UE, scheduling a pair of UEs, that includes the second UE, for full-duplex UL-DL communication with the second full-duplex node in which DL transmissions to the second UE from the second node use a second frequency resource different from the first frequency resource or in which scheduling is avoided for DL connections to the second UE that fall below a quality of service threshold determined using channel quality measurements obtained by the second UE for the first and second frequency resources.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: December 4, 2018
    Assignee: Alcatel Lucent
    Inventors: David Lopez-Perez, Holger Claussen
  • Patent number: 10136331
    Abstract: A base station operates according to a first radio access technology (RAT) that requires synchronization on timing synchronization boundaries. The base station acquires a channel of an unlicensed frequency band and generates a clear-to-send message that is decodable by access points that operate according to a second RAT that does not require synchronization on the timing synchronization boundaries. The base station transmits the clear-to-send message during a time interval between acquisition of the channel and a subsequent timing synchronization boundary.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: November 20, 2018
    Inventors: David Lopez-Perez, Mohammad R. Khawer, Jonathan Ling
  • Patent number: 10104692
    Abstract: A first node includes a transceiver configured to detect one or more second nodes that transmit one or more signals on a channel of an unlicensed frequency band. The one or more signals have one or more received signal strengths at the first node that are below an energy detection threshold that indicates the channel is clear for transmission by the first node. The first node also includes a processor configured to modify the energy detection threshold based on the received signal strength.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: October 16, 2018
    Assignee: Nokia Technologies Oy
    Inventors: Mohammad Khawer, David Lopez-Perez, Jonathan Ling
  • Publication number: 20180254837
    Abstract: A node is configured to be connected to a massive multiple-input, multiple-output (MIMO) array to provide spatially multiplexed channels to a plurality of user equipment in an unlicensed frequency band. The node includes a processor configured to allocate a number of degrees of freedom of the massive MIMO array to interference suppression based on an outcome of a first listen-before-talk (LBT) operation performed by the node to acquire the unlicensed frequency band. The processor is also configured to generate a spatial filter based on the number of degrees of freedom allocated to interference suppression. The node also includes a transceiver configured to perform a second LBT operation using the spatial filter.
    Type: Application
    Filed: March 1, 2017
    Publication date: September 6, 2018
    Inventors: Adrian J. Garcia Rodriguez, Giovanni Geraci, David Lopez Perez, Lorenzo Galati Giordano, Andrea Bonfante
  • Publication number: 20180254838
    Abstract: A node is configured to be connected to a massive multiple-input, multiple-output (MIMO) array to provide spatially multiplexed channels to a plurality of user equipment in an unlicensed frequency band. The node includes a processor configured to allocate a number of degrees of freedom of the massive MIMO array to interference suppression based on an outcome of a first listen-before-talk (LBT) operation performed by the node to acquire the unlicensed frequency band. The processor is also configured to generate a spatial filter based on the number of degrees of freedom allocated to interference suppression. The node also includes a transceiver configured to perform a second LBT operation using the spatial filter.
    Type: Application
    Filed: April 30, 2018
    Publication date: September 6, 2018
    Inventors: Adrian J. Garcia Rodriguez, Giovanni Geraci, David Lopez Perez, Lorenzo Galati Giordano, Andrea Bonfante
  • Publication number: 20180255551
    Abstract: A node is configured for connection to a massive multiple-input, multiple-output (MIMO) array to provide spatially multiplexed channels in an unlicensed frequency band. The node includes a memory configured to store samples of non-spatially filtered signals received by the node during a first listen-before-talk (LBT) operation used to acquire the unlicensed frequency band. The node also includes a processor configured to determine, based on a number of previously stored samples, a duration of a silent time interval during which the node collects samples of non-spatially filtered signals and stores the samples in the memory. The node further includes a transceiver configured to perform a second LBT operation to acquire the unlicensed frequency band using a spatial filter determined based on the samples stored in the memory.
    Type: Application
    Filed: March 1, 2017
    Publication date: September 6, 2018
    Inventors: Giovanni Geraci, Adrian J. Garcia Rodriguez, Lorenzo Galati Giordano, David Lopez Perez
  • Patent number: 10069575
    Abstract: A node is configured to be connected to a massive multiple-input, multiple-output (MIMO) array to provide spatially multiplexed channels to a plurality of user equipment in an unlicensed frequency band. The node includes a processor configured to allocate a number of degrees of freedom of the massive MIMO array to interference suppression based on an outcome of a first listen-before-talk (LBT) operation performed by the node to acquire the unlicensed frequency band. The processor is also configured to generate a spatial filter based on the number of degrees of freedom allocated to interference suppression. The node also includes a transceiver configured to perform a second LBT operation using the spatial filter.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: September 4, 2018
    Assignee: Alcatel Lucent
    Inventors: Adrian J. Garcia Rodriguez, Giovanni Geraci, David Lopez Perez, Lorenzo Galati Giordano, Andrea Bonfante
  • Publication number: 20180222567
    Abstract: A safety open and closing system for an overpressure door on fuselage of an aircraft. Wherein the safety opening and closing system allows safe access through the overpressure door to the compartment. The safety open and closing system including an assembly of a hollow beam, a blocking bar in the hollow beam, a spring biasing the blocking bar with respect to the hollow beam and a lever at the end of the blocking beam which pivots between a position A that allows closure of the overpressure door and a position B preventing closure of the door.
    Type: Application
    Filed: February 7, 2018
    Publication date: August 9, 2018
    Inventors: David LÓPEZ FERNÁNDEZ, Maria Aránzazu GARCÍA PATINO, Sergio GIL GONZÁLEZ
  • Patent number: 10039124
    Abstract: A first node that operates according to a first radio access technology (RAT) provides a first schedule to a second node that operates according to a second RAT. The first schedule requests a first portion of a subsequent time interval for transmission in an unlicensed frequency band. The first node receives one or more second schedules from a second node. The one or more second schedules request one or more second portions of the subsequent time interval for transmission in the unlicensed frequency band. The first node transmits signals in the unlicensed frequency bands during a third portion of the subsequent time interval that is determined based on the at least one second portion.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: July 31, 2018
    Assignee: Nokia Technologies Oy
    Inventors: Jonathan Ling, David Lopez-Perez, Mohammad Khawer
  • Patent number: 10039130
    Abstract: There is provided a heterogeneous communications network. The heterogeneous communications network comprises: a macro cell; a small cell provided within the macro cell; and a user equipment provided within the macro cell, wherein the user equipment is operable to receive control-plane information from the macro cell and user-plane information from the macro cell and/or the small cell, and wherein the user equipment is operable to transmit a connection request based on the received control-plane information, the macro cell and/or small cell are operable to determine which of the macro cell and the small cell is to operate as the serving cell for the user equipment based on the connection request, and the determined serving cell is operable to transmit a connection response to the user equipment.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: July 31, 2018
    Assignee: Alcatel Lucent
    Inventors: David Lopez-Perez, Stepan Kucera, Vijay Venkateswaran
  • Patent number: 9925966
    Abstract: A brake master cylinder arrangement includes a housing with a cylindrical recess, a pressure piston moveable in the cylindrical recess along a longitudinal axis and guided in a sealing manner, and a reservoir for storing brake fluid that is fluidically connected via a fluid channel to the housing. The pressure piston and the housing enclose a pressure chamber that is connected to a fluid circuit of the brake system. Depending on the position of the associated pressure piston, the pressure chamber is either fluidically connected to the fluid reservoir or disconnected therefrom. In a region that axially spans the sealing arrangement in a starting position of the pressure piston, the outer circumferential surface of the pressure piston has profiling that provides a fluidic connection between the fluid reservoir and the pressure chamber.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: March 27, 2018
    Assignee: Lucas Automotive GmbH
    Inventors: David Lopéz-Larequi, Hans-Martin Giese
  • Patent number: 9910651
    Abstract: A method, a device, and a non-transitory storage medium having instructions to deploy files of a web-based application, wherein a deploying includes: receive an upload of the files from a user device via a web browser, and store the files; receive from the user device via the web browser, a first request to run the web-based application that has been deployed; run the web-based application in response to the first request, and wherein during a running of the web-based application: determine a type of a second request for data to be used to generate a user interface of the web-based application; obtain the data based on the type of the second request; and render the user interface based on the obtained data.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: March 6, 2018
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: David Lopez, Benjamin Pomales, Timothy E. Richmond, Umashankar Velusamy