Patents by Inventor David Tu

David Tu 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: 11221365
    Abstract: An example test system includes a device interface board (DIB) having one or more signal transmission paths and an interface for connecting to one or more other components of the test system. Test circuitry is configured to inject test signals into the one or more signal transmission paths and to measure transmitted versions of the test signals at the interface to obtain measurement signals. One or more processing devices are configured to generate calibration factors based on differences between the injected test signals and the measurement signals, and to store the calibration factors in computer memory. The calibration factors are for correcting for effects on the test signals of the one or more signal transmission paths.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: January 11, 2022
    Assignee: Teradyne, Inc.
    Inventors: Stephen J. Lyons, David Tu
  • Publication number: 20210286000
    Abstract: An example test system includes a device interface board (DIB) having one or more signal transmission paths and an interface for connecting to one or more other components of the test system. Test circuitry is configured to inject test signals into the one or more signal transmission paths and to measure transmitted versions of the test signals at the interface to obtain measurement signals. One or more processing devices are configured to generate calibration factors based on differences between the injected test signals and the measurement signals, and to store the calibration factors in computer memory. The calibration factors are for correcting for effects on the test signals of the one or more signal transmission paths.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 16, 2021
    Inventors: Stephen J. Lyons, David Tu
  • Publication number: 20170215518
    Abstract: Cleat structures, e.g., for golf shoes, may include a flat and flexible interior surface and/or a generally disk-shaped perimeter area that includes features to promote in-molding of the cleat to a footwear sole component (e.g., to permanently engage the cleat with an outsole member). Such cleats may provide a flexible and comfortable base, including a low profile, e.g., to enable formation relatively thin and/or flexible footwear sole components. Footwear sole components and articles of footwear that include one or more in-molded cleat structures of this type also are described. Molds used for in-molding procedures and methods of using the molds to make articles with in-molded components (e.g., for making footwear sole structures including one or more in-molded cleats) also are described.
    Type: Application
    Filed: April 17, 2017
    Publication date: August 3, 2017
    Inventors: Darien Curl, Dick Lin, Nicole Mueller, Ricardo Salinas, JR., David Tu
  • Patent number: 9125452
    Abstract: Cleat structures, e.g., for golf shoes, may include a flat and flexible interior surface and/or a generally disk-shaped perimeter area that includes features to promote in-molding of the cleat to a footwear sole component (e.g., to permanently engage the cleat with an outsole member). Such cleats may provide a flexible and comfortable base, including a low profile, e.g., to enable formation relatively thin and/or flexible footwear sole components. Footwear sole components and articles of footwear that include one or more in-molded cleat structures of this type also are described. Molds used for in-molding procedures and methods of using the molds to make articles with in-molded components (e.g., for making footwear sole structures including one or more in-molded cleats) also are described.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: September 8, 2015
    Assignee: NIKE, Incorporated
    Inventors: Darien Curl, Dick Lin, Nicole Mueller, Ricardo Salinas, Jr., David Tu
  • Publication number: 20140215862
    Abstract: Cleat structures, e.g., for golf shoes, may include a flat and flexible interior surface and/or a generally disk-shaped perimeter area that includes features to promote in-molding of the cleat to a footwear sole component (e.g., to permanently engage the cleat with an outsole member). Such cleats may provide a flexible and comfortable base, including a low profile, e.g., to enable formation relatively thin and/or flexible footwear sole components. Footwear sole components and articles of footwear that include one or more in-molded cleat structures of this type also are described. Molds used for in-molding procedures and methods of using the molds to make articles with in-molded components (e.g., for making footwear sole structures including one or more in-molded cleats) also are described.
    Type: Application
    Filed: February 5, 2013
    Publication date: August 7, 2014
    Applicant: NIKE, INC.
    Inventors: Darien Curl, Dick Lin, Nicole Mueller, Ricardo Salinas, JR., David Tu
  • Publication number: 20140215729
    Abstract: Cleat structures, e.g., for golf shoes, may include a flat and flexible interior surface and/or a generally disk-shaped perimeter area that includes features to promote in-molding of the cleat to a footwear sole component (e.g., to permanently engage the cleat with an outsole member). Such cleats may provide a flexible and comfortable base, including a low profile, e.g., to enable formation relatively thin and/or flexible footwear sole components. Footwear sole components and articles of footwear that include one or more in-molded cleat structures of this type also are described. Molds used for in-molding procedures and methods of using the molds to make articles with in-molded components (e.g., for making footwear sole structures including one or more in-molded cleats) also are described.
    Type: Application
    Filed: February 5, 2013
    Publication date: August 7, 2014
    Applicant: NIKE, INC.
    Inventors: Darien Curl, Dick Lin, Nicole Mueller, Ricardo Salinas, JR., David Tu
  • Publication number: 20140215857
    Abstract: Cleat structures, e.g., for golf shoes, may include a flat and flexible interior surface and/or a generally disk-shaped perimeter area that includes features to promote in-molding of the cleat to a footwear sole component (e.g., to permanently engage the cleat with an outsole member). Such cleats may provide a flexible and comfortable base, including a low profile, e.g., to enable formation relatively thin and/or flexible footwear sole components. Footwear sole components and articles of footwear that include one or more in-molded cleat structures of this type also are described. Molds used for in-molding procedures and methods of using the molds to make articles with in-molded components (e.g., for making footwear sole structures including one or more in-molded cleats) also are described.
    Type: Application
    Filed: February 5, 2013
    Publication date: August 7, 2014
    Applicant: NIKE, INC.
    Inventors: Darien Curl, Dick Lin, Nicole Mueller, Ricardo Salinas, JR., David Tu
  • Patent number: 6578514
    Abstract: A modular device of tubular plasma source mainly includes at least two tubular antennae, one RF power supply and one reference potential. The tubular antennae are arranged side by side for inducing plasma. Each tubular antenna includes an induction coil being a spiral spring shape, and a dielectric sleeve having a hollow through hole for putting in the induction coil. The RF power supply connects with the induction coil in parallel or in series, the reference potential refers to the RF power supply and connects with the induction coil.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: June 17, 2003
    Assignee: Duratek Inc.
    Inventor: David Tu
  • Publication number: 20020005253
    Abstract: A modular device of tubular plasma source mainly includes at least two tubular antennae, one RF power supply and one reference potential. The tubular antennae are arranged side by side for inducing plasma. Each tubular antenna includes an induction coil being a spiral spring shape, and a dielectric sleeve having a hollow through hole for putting in the induction coil. The RF power supply connects with the induction coil in parallel or in series, the reference potential refers to the RF power supply and connects with the induction coil.
    Type: Application
    Filed: May 31, 2001
    Publication date: January 17, 2002
    Applicant: Duratek, Inc.
    Inventor: David Tu