Patents by Inventor Inga Koch

Inga Koch 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).

  • Persistent current switch
    Patent number: 8138880
    Abstract: An improved persistent current switch design and method of operation are disclosed. By way of example, a persistent current switch circuit comprises a heating element and a switch element located proximate to the heating element, the switch element being substantially formed from a material (by way of example only, titanium) which exhibits a superconducting temperature value below a superconducting temperature value exhibited by a material (by way of example only, aluminum) used to provide a connection to the switch element. The switch element is responsive to the heating element such that the heating element is used to control whether or not the switch element is in a superconducting state. The switch element may also have a folded geometry. Such persistent current switches exhibit low power and low inductance.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: March 20, 2012
    Assignee: International Business Machines Corporation
    Inventors: George A. Keefe, Roger H. Koch, Inga Koch, legal representative, Frank P. Milliken, Jr., James R. Rozen
  • Persistent Current Switch
    Publication number: 20100026447
    Abstract: An improved persistent current switch design and method of operation are disclosed. By way of example, a persistent current switch circuit comprises a heating element and a switch element located proximate to the heating element, the switch element being substantially formed from a material (by way of example only, titanium) which exhibits a superconducting temperature value below a superconducting temperature value exhibited by a material (by way of example only, aluminum) used to provide a connection to the switch element. The switch element is responsive to the heating element such that the heating element is used to control whether or not the switch element is in a superconducting state. The switch element may also have a folded geometry. Such persistent current switches exhibit low power and low inductance.
    Type: Application
    Filed: July 30, 2008
    Publication date: February 4, 2010
    Inventors: George A. Keefe, Roger H. Koch, Inga Koch, Frank P. Milliken, JR., James R. Rozen