Patents by Inventor James Stephen Mahon

James Stephen Mahon 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).

  • Method and apparatus for measuring current
    Patent number: 7746068
    Abstract: Current testing/measuring apparatus 10 comprises a flexible member 12 having a first end 14 and a second end 16. In use, the flexible member 12 is arranged to locate around a conductor 11 carrying a current to be measured. In particular, the current measuring apparatus 10 comprises a Rogowski coil. The ends of the flexible member 12 are coupled together in use but a gap is created between the ends. This distance can generate errors in the current measurement and the present invention provides compensation means 28 in the form of a compensation windings. The compensation windings comprise a planar spiral conductor provided on a printed circuit board to compensate for the separation distance between the first end and the second end.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: June 29, 2010
    Assignee: Lem Heme Limited
    Inventor: James Stephen Mahon
  • Coil coupling
    Patent number: D599233
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: September 1, 2009
    Assignee: GMC-1 Prosys Limited
    Inventors: Desmond Nullan Ebenezer, Richard Paul Northrop, James Stephen Mahon
  • Coil coupling
    Patent number: RE43506
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: July 17, 2012
    Assignee: GMC-1 Prosys Limited
    Inventors: Desmond Nullan Ebenezer, Richard Paul Northrop, James Stephen Mahon