Patents by Inventor Chris Sykes

Chris Sykes 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).

  • Electromagnetic surveying
    Patent number: 7683625
    Abstract: A submersible electromagnetic (EM) field generator for seafloor electromagnetic surveying comprising an AC to DC converter operable to generate a DC output from an AC input and a switching module operable to generate a waveform driving signal by selectively switching the DC output. The EM field generator also comprises an antenna that is operable to generate an EM field in response to the waveform driving signal. This design approach of using a switched DC source allows square or rectangular wave EM signals to be generated which have sharp transition characteristics and which are substantially independent of the AC input characteristics.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: March 23, 2010
    Assignee: OHM Limited
    Inventors: James Milne, Jennifer Rust, Chris Sykes, Mark Bennett
  • ELECTROMAGNETIC SURVEYING
    Publication number: 20080007265
    Abstract: A submersible electromagnetic (EM) field generator for seafloor electromagnetic surveying comprising an AC to DC converter operable to generate a DC output from an AC input and a switching module operable to generate a waveform driving signal by selectively switching the DC output. The EM field generator also comprises an antenna that is operable to generate an EM field in response to the waveform driving signal. This design approach of using a switched DC source allows square or rectangular wave EM signals to be generated which have sharp transition characteristics and which are substantially independent of the AC input characteristics.
    Type: Application
    Filed: September 14, 2007
    Publication date: January 10, 2008
    Inventors: James Milne, Jennifer Rust, Chris Sykes, Mark Bennett
  • Electromagnetic surveying
    Publication number: 20060001428
    Abstract: A submersible electromagnetic (EM) field generator for seafloor electromagnetic surveying comprising an AC to DC converter operable to generate a DC output from an AC input and a switching module operable to generate a waveform driving signal by selectively switching the DC output. The EM field generator also comprises an antenna that is operable to generate an EM field in response to the waveform driving signal. This design approach of using a switched DC source allows square or rectangular wave EM signals to be generated which have sharp transition characteristics and which are substantially independent of the AC input characteristics.
    Type: Application
    Filed: June 29, 2005
    Publication date: January 5, 2006
    Inventors: James Milne, Jennifer Rust, Chris Sykes, Mark Bennett