Patents by Inventor John A. Urbahn

John A. Urbahn 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: 11508506
    Abstract: A superconducting magnet (10) includes a cryogenic container (22, 32) containing a superconducting magnet winding (20). A sealed electrical feedthrough (36) passes through the cryogenic container. A contactor (40) inside the cryogenic container has an actuator (42) and feedthrough-side and magnet-side electrical terminals (46, 47). A high temperature superconductor (HTS) lead (60) also disposed in the cryogenic container has a first end (62) electrically connected with the magnet-side electrical terminal of the contactor and a second end (64) electrically connected to the superconducting magnet winding. A first stage thermal station (52) thermally connected with the first end of the HTS lead has a temperature (T1) lower than the critical temperature (TC,HTS) of the HTS lead. A second stage thermal station (54) thermally connected with the second end of the HTS lead has a temperature (T2) lower than a critical temperature (TC) of the superconducting magnet winding (20).
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: November 22, 2022
    Assignee: Koninklijke Philips N.V.
    Inventors: John Urbahn, Philippe Abel Menteur, Glen George Pfleiderer, Matthew Voss
  • Publication number: 20190108933
    Abstract: A superconducting magnet (10) includes a cryogenic container (22, 32) containing a superconducting magnet winding (20). A sealed electrical feedthrough (36) passes through the cryogenic container. A contactor (40) inside the cryogenic container has an actuator (42) and feedthrough-side and magnet-side electrical terminals (46, 47). A high temperature superconductor (HTS) lead (60) also disposed in the cryogenic container has a first end (62) electrically connected with the magnet-side electrical terminal of the contactor and a second end (64) electrically connected to the superconducting magnet winding. A first stage thermal station (52) thermally connected with the first end of the HTS lead has a temperature (T1) lower than the critical temperature (TC,HTS) of the HTS lead. A second stage thermal station (54) thermally connected with the second end of the HTS lead has a temperature (T2) lower than a critical temperature (TC) of the superconducting magnet winding (20).
    Type: Application
    Filed: April 12, 2017
    Publication date: April 11, 2019
    Inventors: JOHN URBAHN, PHILIPPE ABEL MENTEUR, GLEN GEORGE PFLEIDERER, MATTHEW VOSS
  • Publication number: 20080242974
    Abstract: A system for polarizing a material to be used in techniques employing magnetic resonance (MR) is provided. The polarizer system includes a cooling chamber having a cryogenic refrigerant therein for use in polarizing a substance. A sorption pump is connected to the cooling chamber to reduce a pressure therein to allow for hyperpolarizing of the sample. The sorption pump is cooled by a refrigeration system to promote molecular adsorption in the sorption pump. The cooling chamber, sorption pump, and refrigeration system are arranged in a closed system.
    Type: Application
    Filed: April 2, 2007
    Publication date: October 2, 2008
    Inventors: John A. Urbahn, Jan Ardenkjaer-Larsen, Ernst W. Stautner, Bruce C. Amm, Peter J. Feenan, Roy A. Mangano, David G. Reeves
  • Publication number: 20080240998
    Abstract: A fluid path system includes a vial containing a frozen pharmaceutical product therein. A dissolution fluid path is also included in the fluid path system, the dissolution fluid path having an output end in fluid communication with the vial and an input end attached to a pressure vessel containing a dissolution medium. A delivery fluid path is also included in the system having a first end hermetically attached to the vial to transport therefrom a mixture of dissolved pharmaceutical product and dissolution medium and a second end connected to a receiving vessel to receive the mixture. A dissolution fluid path valve is positioned between the pressure vessel and the dissolution fluid path to control flow of the dissolution medium, and a delivery fluid path valve is also included in the fluid path system to control flow of the mixture from the delivery fluid path to the receiving vessel.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 2, 2008
    Inventors: John A. Urbahn, Jan Ardenkjaer-Larsen, Andrew M. Leach, Eric Telfeyan, David K. Dietrich, David B. Whitt, Peter Miller, Ernst W. Stautner
  • Publication number: 20080229928
    Abstract: A sorption pumping system includes a conductive inner vessel having a sorbent material therein to adsorb gas molecules. An outer vessel is positioned about the inner vessel and includes a heat transfer flange connected thereto. A gas chamber is formed between the inner vessel and the outer vessel. The gas chamber is constructed to sealably contain a thermally conductive gas therein.
    Type: Application
    Filed: March 20, 2007
    Publication date: September 25, 2008
    Inventors: John A. Urbahn, Jan Ardenkjaer-Larsen
  • Publication number: 20070240451
    Abstract: A cooling system for high temperature superconductor equipment comprising a cryocooler in heat exchange relationship with the high temperature superconductor equipment, and an air separation unit in heat exchange relationship with the cryocooler, the system arranged such that heat from the high temperature superconductor equipment is rejected to said air separation unit via the cryocooler.
    Type: Application
    Filed: September 29, 2005
    Publication date: October 18, 2007
    Inventors: James Fogarty, Albert Steinbach, James Bray, John Urbahn, Richard Depuy
  • Patent number: 7255013
    Abstract: A method for calculating a mass flow rate of a cryogenic fluid within a flow tube includes positioning a sensor within a stream of cryogenic fluid flowing through the flow tube. The sensor is operatively coupled to a strain gauge. A difference between a dynamic pressure in the fluid stream and a static pressure in the fluid stream is measured and the mass flow rate of the cryogenic fluid within the flow tube is calculated.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: August 14, 2007
    Assignee: General Electric Company
    Inventors: John Urbahn, Robert Adolph Ackermann
  • Publication number: 20070095150
    Abstract: A method for calculating a mass flow rate of a cryogenic fluid within a flow tube includes positioning a sensor within a stream of cryogenic fluid flowing through the flow tube. The sensor is operatively coupled to a strain gauge. A difference between a dynamic pressure in the fluid stream and a static pressure in the fluid stream is measured and the mass flow rate of the cryogenic fluid within the flow tube is calculated.
    Type: Application
    Filed: November 2, 2005
    Publication date: May 3, 2007
    Inventors: John Urbahn, Robert Ackermann
  • Publication number: 20070006598
    Abstract: A system is disclosed for cooling superconducting devices. The system includes a cryogen cooling system configured to be coupled to the superconducting device and to supply cryogen to the device. The system also includes a cryogen storage system configured to supply cryogen to the device. The system further includes flow control valving configured to selectively isolate the cryogen cooling system from the device, thereby directing a flow of cryogen to the device from the cryogen storage system.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 11, 2007
    Inventors: Evangelos Laskaris, John Urbahn, Albert Steinbach
  • Publication number: 20060082228
    Abstract: A power generation system including: a generator including a rotor including a superconductive rotor coil coupled to a rotatable shaft; a first prime mover drivingly coupled to the rotatable shaft; and a thermal radiation shield, partially surrounding the rotor coil, comprising at least a first sheet and a second sheet spaced apart from the first sheet by centripetal force produced by the rotatable shaft. A thermal radiation shield for a generator comprising a rotor including a super-conductive rotor coil comprising: a first sheet having at least one surface formed from a low emissivity material; and at least one additional sheet having at least one surface formed from a low emissivity material spaced apart from the first sheet by centripetal force produced by the rotatable shaft, wherein each successive sheet is an incrementally greater circumferental arc length and wherein the centripetal force shapes the sheets into a substantially catenary shape.
    Type: Application
    Filed: October 18, 2004
    Publication date: April 20, 2006
    Inventors: John Urbahn, Evangelos Laskaris
  • Patent number: 6051114
    Abstract: The present invention provides a method and apparatus for preferential PVD conductor fill in an integrated circuit structure. The present invention utilizes a high density plasma for sputter deposition of a conductive layer on a patterned substrate, and a pulsed DC power source capacitively coupled to the substrate to generate an ion current at the surface of the substrate. The ion current prevents sticking of the deposited material to the field areas of the patterned substrate, or etches deposited material from the field areas to eliminate crowning or cusping problems associated with deposition of a conductive material in a trench, hole or via formed on the substrate.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: April 18, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Tse-Yong Yao, Zheng Xu, Kenny King-tai Ngan, Xing Chen, John Urbahn, Lawrence P. Bourget