Patents by Inventor Kenneth P. J. Williams

Kenneth P. J. Williams 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).

  • Diamond separation using raman scattering
    Patent number: 4693377
    Abstract: A method for separating diamonds from gangue in which discrete units of gangue are passed through a beam of laser radiation capable of causing Raman spectral activation. The scattered radiation is detected and caused to actuate an ejector which separates units of diamond containing gangue from units of non-diamond containing gangue. The units of diamond containing gangue are then collected together.
    Type: Grant
    Filed: August 27, 1986
    Date of Patent: September 15, 1987
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Donald L. Gerrard, John E. Preedy, Kenneth P. J. Williams