Patents by Inventor Randall C. Black

Randall C. Black 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: 9134047
    Abstract: Cryogenic refrigeration employs a pulse tube cryo-cooler and a dilution refrigerator to provide very low temperature cooling, for example, to cool superconducting processors. Continuous cryogenic cycle refrigeration may be achieved using multiple adsorption pumps. Various improvements may include multiple distinct thermal-linking points, evaporation pots with cooling structures, and/or one or more gas-gap heat switches which may be integral to an adsorption pump. A reservoir volume may provide pressure relief when the system is warmed above cryogenic temperature, reducing the mass of the system. Additional heat exchangers and/or separate paths for condensation and evaporation may be provided. Multi-channel connectors may be used, and/or connectors formed of a regenerative material with a high specific heat capacity at cryogenic temperature. Flexible PCBs may provide thermal links to components that embody temperature gradients.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: September 15, 2015
    Assignee: D-Wave Systems Inc.
    Inventors: Randall C. Black, Jeremy P. Hilton, Geordie Rose
  • Publication number: 20130231249
    Abstract: Cryogenic refrigeration employs a pulse tube cryo-cooler and a dilution refrigerator to provide very low temperature cooling, for example, to cool superconducting processors. Continuous cryogenic cycle refrigeration may be achieved using multiple adsorption pumps. Various improvements may include multiple distinct thermal-linking points, evaporation pots with cooling structures, and/or one or more gas-gap heat switches which may be integral to an adsorption pump. A reservoir volume may provide pressure relief when the system is warmed above cryogenic temperature, reducing the mass of the system. Additional heat exchangers and/or separate paths for condensation and evaporation may be provided. Multi-channel connectors may be used, and/or connectors formed of a regenerative material with a high specific heat capacity at cryogenic temperature. Flexible PCBs may provide thermal links to components that embody temperature gradients.
    Type: Application
    Filed: April 15, 2013
    Publication date: September 5, 2013
    Applicant: D-Wave Systems Inc.
    Inventors: Randall C. Black, Jeremy P. Hilton, Geordie Rose
  • Publication number: 20100281885
    Abstract: Cryogenic refrigeration employs a pulse tube cryo-cooler and a dilution refrigerator to provide very low temperature cooling, for example, to cool superconducting processors. Continuous cryogenic cycle refrigeration may be achieved using multiple adsorption pumps. Various improvements may include multiple distinct thermal-linking points, evaporation pots with cooling structures, and/or one or more gas-gap heat switches which may be integral to an adsorption pump. A reservoir volume may provide pressure relief when the system is warmed above cryogenic temperature, reducing the mass of the system. Additional heat exchangers and/or separate paths for condensation and evaporation may be provided. Multi-channel connectors may be used, and/or connectors formed of a regenerative material with a high specific heat capacity at cryogenic temperature. Flexible PCBs may provide thermal links to components that embody temperature gradients.
    Type: Application
    Filed: December 23, 2008
    Publication date: November 11, 2010
    Applicant: D-WAVE SYSTEMS INC.
    Inventors: Randall C. Black, Jeremy P. Hilton, Geordie Rose, Jacob Craig Petroff, Sergey V. Uchaykin
  • Patent number: 6518747
    Abstract: Apparatus for detection and measurement of agglutinations of magnetic particles employing Hall sensors. A low frequency AC signal is employed to excite or bias the Hall sensors which reside in a DC magnetic field. The particles are moved into operative relationship with the Hall sensors in order to generate a signal representing the number of particles on the substrate. The method for such detection and measurement is also part of the invention.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: February 11, 2003
    Assignee: Quantum Design, Inc.
    Inventors: Ronald E. Sager, Michael B. Simmonds, Jost H. Diederichs, Kurt G. Jensen, Randall C. Black
  • Publication number: 20020135358
    Abstract: Apparatus for detection and measurement of agglutinations of magnetic particles employing Hall sensors. A low frequency AC signal is employed to excite or bias the Hall sensors which reside in a DC magnetic field. The particles are moved into operative relationship with the Hall sensors in order to generate a signal representing the number of particles on the substrate. The method for such detection and measurement is also part of the invention.
    Type: Application
    Filed: February 16, 2001
    Publication date: September 26, 2002
    Inventors: Ronald E. Sager, Michael B. Simmonds, Jost H. Diederichs, Kurt G. Jensen, Randall C. Black
  • Patent number: 5491411
    Abstract: A magnetic flux microscope that measures the magnetic field about a sample surface. The apparatus uses a thin-film superconducting quantum interference device (SQUID) as the scanning device. Magnetic shielding is provided about the SQUID and is held stationary relative to the SQUID. The apparatus and method provides a very high magnetic image of the sample with a very high spatial and field resolution.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: February 13, 1996
    Assignee: University of Maryland
    Inventors: Frederick C. Wellstood, Anna Mathai, Dian Song, Randall C. Black