Patents by Inventor David Anthony Cardwell

David Anthony Cardwell 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: 10179033
    Abstract: Present example embodiments relate generally to a surgical system comprising an internal anchor assembly configurable to be inserted into and positioned inside a cavity of a body. The surgical system further comprises an external anchor assembly configurable to magnetically couple to the internal anchor assembly. The external anchor assembly may comprise a magnetic assembly. The magnetic assembly may include one or more superconducting magnets configurable to generate a magnetic field. The magnetic assembly may further include a conductive housing for receiving the one or more superconducting magnets. The external anchor assembly may further include a temperature control section configurable to control a temperature of the one or more superconducting magnets via the conductive housing. The external anchor assembly may further include an external anchor body configurable to receive the magnetic assembly and the temperature control section.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 15, 2019
    Assignee: Bio-Medical Engineering (HK) Limited
    Inventors: Archibald MacRobert Campbell, David Anthony Cardwell, John Hay Durrell, Yuanhua Shi, Kai Yuan Huang, Kysen Grant Boyd Palmer, Anthony Robert Dennis, Chung Kwong Yeung
  • Publication number: 20160045273
    Abstract: Present example embodiments relate generally to a surgical system comprising an internal anchor assembly configurable to be inserted into and positioned inside a cavity of a body. The surgical system further comprises an external anchor assembly configurable to magnetically couple to the internal anchor assembly. The external anchor assembly may comprise a magnetic assembly. The magnetic assembly may include one or more superconducting magnets configurable to generate a magnetic field. The magnetic assembly may further include a conductive housing for receiving the one or more superconducting magnets. The external anchor assembly may further include a temperature control section configurable to control a temperature of the one or more superconducting magnets via the conductive housing. The external anchor assembly may further include an external anchor body configurable to receive the magnetic assembly and the temperature control section.
    Type: Application
    Filed: October 29, 2015
    Publication date: February 18, 2016
    Inventors: Archibald MacRobert Campbell, David Anthony Cardwell, John Hay Durrell, Yuanhua Shi, Kai Yuan Huang, Kysen Grant Boyd Palmer, Anthony Robert Dennis, Chung Kwong Yeung
  • Patent number: 8193122
    Abstract: A seed crystal for the fabrication of a superconductor is grown from a rare-earth oxide having the basic formula XwZtBaxCuyOz, X comprising at least one rare-earth element and Z being a dopant which raises the peritectic decomposition temperature (Tp) of the oxide. In a preferred embodiment, the dopant is Mg. Use of this rare-earth oxide material for seed crystals increases the temperature at which cold-seeding can be performed and thus enables the growth of a wider range of bulk superconductor materials by this process.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: June 5, 2012
    Assignee: The Boeing Company
    Inventors: David Anthony Cardwell, Nadendla Hari Babu, Yun-Hua Shi
  • Publication number: 20110319268
    Abstract: A seed crystal for the fabrication of a superconductor is grown from a rare-earth oxide having the basic formula XwZtBaxCuyOz, X comprising at least one rare-earth element and Z being a dopant which raises the peritectic decomposition temperature (Tp) of the oxide. In a preferred embodiment, the dopant is Mg. Use to of this rare-earth oxide material for seed crystals increases the temperature at which cold-seeding can be performed and thus enables the growth of a wider range of bulk superconductor materials by this process.
    Type: Application
    Filed: June 30, 2011
    Publication date: December 29, 2011
    Applicant: Cambridge Enterprise Limited
    Inventors: David Anthony Cardwell, Nadendla Hari Babu, Yun-Hua Shi
  • Patent number: 8003072
    Abstract: A seed crystal for the fabrication of a superconductor is grown from a rare-earth oxide having the basic formula XwZtBaxCuyOz, X comprising at least one rare-earth element and Z being a dopant which raises the peritectic decomposition temperature (Tp) of the oxide. In a preferred embodiment, the dopant is Mg. Use of this rare-earth oxide material for seed crystals increases the temperature at which cold-seeding can be performed and thus enables the growth of a wider range of hulk superconductor materials by this process.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: August 23, 2011
    Assignee: Cambridge Enterprise Limited
    Inventors: David Anthony Cardwell, Nadendla Hari Babu, Yun-Hua Shi
  • Patent number: 7608565
    Abstract: The invention provides a method of manufacturing a doped i X—Ba—Cu—O material, the method comprising the steps of: a) mixing an X—Ba—L—O or X—Ba—Cu—L—O material with an X—1 Ba—Cu—O material; and b) crystallising the mixture; 1 wherein each X is independently selected from a rare earth (Group IIIB) element, yttrium, a combination of rare earth elements, or a combination of yttrium and a rare earth element; and L is selected from U, Nb, Ta, Mo, W, Zr, Hf, Ag, Pt, Ru and Sn. The invention further provides a doped material manufactured by the method of the invention.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: October 27, 2009
    Inventors: Colin David Tarrant, Kelvin Robert Schneider, David Anthony Cardwell, Nadendla Hari Babu
  • Publication number: 20090203529
    Abstract: There are provided superconducting materials (2) comprising a substrate (4); an interface layer (6) on the substrate, comprising a material of formula XwBaxCuyLtOz, and a superconducting layer (8) on the interface layer comprising a compound of formula XaBabCucOd? Also provided are methods of manufacturing superconducting materials and materials produced by these methods.
    Type: Application
    Filed: July 12, 2006
    Publication date: August 13, 2009
    Inventors: Colin David Tarrant, Kelvin Robert Schneider, David Anthony Cardwell, Nadendla Hari Babu