Permanent Superconductor Devices (epo) Patents (Class 257/E39.017)
  • Patent number: 9972410
    Abstract: The present invention relates to a Ti-included oxide dispersion strengthened copper alloy and a method for preparing oxide dispersion copper by an internal oxidation Ti-included copper alloy, which thus allows spheronization and refinement of the oxides, and reduction of distance between the oxides. According to the present invention, there is provided oxide dispersion copper having excellent hardness and tensile strength as well as electrical conductivity by performing spheronization and refinement for Ti-included oxide and thus further reducing the distance between oxides.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: May 15, 2018
    Assignees: KOREA INSTITUTE OF MACHINERY & MATERIALS, GLOBAL FRONTIER HYBRID INTERFACE MATERIALS
    Inventors: Seung Zeon Han, Hong Rae Joh, Jee Hyuk Ahn, Kwang Ho Kim
  • Patent number: 9871575
    Abstract: Embodiments include a system, method, and computer program product for a mobile ad-hoc radio based linked extensible (MARBLE) unit that is a portable, self-contained mesh-capable radio transceiver unit capable of being deployed with other MARBLE units to form a local area ad hoc mesh network. Several MARBLE units may be distributed in the field by an operator (e.g., first responder) in the form of a ball, puck or other shaped enclosure that may be held by a human hand and thrown, tossed or placed in the field to deploy a local area ad hoc mesh network. The MARBLE units may exchange information among themselves to determine and select one MARBLE unit as a relay gateway to access an IP network for all of the MARBLE units coupled to the local area ad hoc mesh network.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: January 16, 2018
    Assignee: Mutualink, Inc.
    Inventors: Michael S. Wengrovitz, Joseph R. Mazzarella
  • Patent number: 7923717
    Abstract: A switching device has an S (Superconductor)-N (Normal Metal)-S superlattice to control the stream of electrons without any dielectric materials. Each layer of said Superconductor has own terminal. The superlattice spacing is selected based on “Dimensional Crossover Effect”. This device can operate at a high frequency without such energy losses as devices breaking the superconducting state. The limit of the operation frequency in the case of the Nb/Cu superlattice is expected to be in the order of 1018 Hz concerning plasmon loss energy of the normal metals (Cu; in the order of 103 eV).
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: April 12, 2011
    Inventor: Katsuyuki Tsukui
  • Publication number: 20080188372
    Abstract: A method for forming improved superconducting composites having improved Jc values by assembling octagonal or curved octagonal elements which when assembled allow for formation of uniformly continuously spaced voids. The voids are then filled with a metal, alloy, intermetallic substance, or ceramic oxide. The assembly of the octagonal elements and the filling of the voids is performed in a metal can. Accordingly, the flexibility in design of the present invention allows control of the performance of the superconductor and is cost effective.
    Type: Application
    Filed: November 8, 2006
    Publication date: August 7, 2008
    Inventor: Leszek Motowidlo
  • Patent number: 7371586
    Abstract: A superconductor and a method for producing the same are provided. The method for producing a superconductor includes the step of forming a superconducting layer on a base layer by performing a film deposition at least three times, wherein the film thickness of a superconducting film in each film deposition is 0.3 ?m or less. In such a case, even when the layer thickness of the superconducting layer is increased, the decrease in the Jc is suppressed and the Ic is increased.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: May 13, 2008
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Shuji Hahakura, Kazuya Ohmatsu
  • Patent number: 6777808
    Abstract: The self inductance associated with a capacitance A52 in a superconductor integrated circuit (FIG. 1) is reduced by adding a layer of superconductor metal (A54) overlying the capacitor, effectively producing a negative inductance to counteract the self-inductance of the capacitor leads, thereby reducing inductance of the circuit. As a result it possible to transfer a single flux quantum (“SFQ”) pulse through the capacitor. Capacitors (19 and 25 FIG. 5) of the foregoing type are incorporated in superconductor integrated circuit SFQ transmission lines (FIG. 5) to permit SQUID-to-SQUID transfer of SFQ pulses, while maintaining the circuit grounds of the respective SQUIDs in DC isolation. Bias current (10) may be supplied to multiple SQUIDs (1 & 3, 7 & 9 FIG. 5) serially, reducing the supply current required previously for operation of multiple SQUIDs.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: August 17, 2004
    Assignee: Northrop Grumman Corporation
    Inventors: Quentin P. Herr, Lynn A. Abelson, George L. Kerber