Patents by Inventor Rick Lawrence

Rick Lawrence 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).

  • Nickel sulphide precipitation process
    Patent number: 8747678
    Abstract: The invention provides hydrometallurgical processes by which dissolved nickel may be removed from water at ambient temperature and low system pressure.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: June 10, 2014
    Assignee: Bioteq Environmental Technologies Inc.
    Inventors: Michael Bratty, Rick Lawrence, David Kratochvil
  • Nickel sulphide precipitation process
    Publication number: 20090068076
    Abstract: The invention provides hydrometallurgical processes by which dissolved nickel may be removed from water at ambient temperature and low system pressure.
    Type: Application
    Filed: March 30, 2007
    Publication date: March 12, 2009
    Applicant: BIOTEQ ENVIRNMENTAL TECHNOLOGIES, INC.
    Inventors: Michael Bratty, Rick Lawrence, David Kratochvil
  • Method and apparatus for determining the complex impedance of an electrical component
    Publication number: 20050021254
    Abstract: The invention provides a method and apparatus for determining the complex impedance of an electrical component. The method comprises the steps of applying an input signal to the component comprising a plurality of discrete frequencies simultaneously, and determining the complex impedance of the component at each of the frequencies using a discrete demodulation technique on two complex impedance related parameters at each of the discrete frequencies. This method is particularly useful in electrically noisy environments and can be used to determine the impedance and equivalent circuit parameters for a battery. It can also be applied to battery system interconnects to enable battery system currents to be determined.
    Type: Application
    Filed: July 13, 2004
    Publication date: January 27, 2005
    Applicant: James G. Biddle Co.
    Inventors: Peter Merl, George Esmet, Rick Lawrence, Jan-Christoffel Heyneke, David Clarke