Patents by Inventor Nevil J. Anderson

Nevil J. Anderson 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 of removing impurities from hard waters or waters with significant calcium/magnesium concentrations
    Patent number: 4882064
    Abstract: A method for removing suspended impurities and colored substances from water which is hard and/or has a pH in excess of 5 which comprises contacting the water at its natural pH with a coagulant/adsorbent which comprises a finely divided particulate mineral material, the individual particles of which have a thin hydroxylated surface layer having a positive zeta potential at the adsorption pH, and separating the thus treated water from the coagulant/adsorbent.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: November 21, 1989
    Assignee: Commonwealth Scientific and Research Organization
    Inventors: David R. Dixon, Nevil J. Anderson
  • Water clarification coagulant/adsorbent
    Patent number: 4363749
    Abstract: A particulate coagulant/adsorbent for removing suspended impurities and colored substances from water by coagulation comprises a finely divided particulate mineral or clay material, the individual particles of which have been treated to produce a thin hydroxylated surface layer having a positive zeta potential at the adsorption pH.A process and an apparatus for water treatment utilizing the coagulant/adsorbent and providing for regeneration and recycling thereof are also described.
    Type: Grant
    Filed: February 4, 1981
    Date of Patent: December 14, 1982
    Assignee: Commonwealth Scientific & Industrial Research Organization
    Inventors: Donald E. Weiss, Luis O. Kolarik, Anthony J. Priestley, Nevil J. Anderson
  • Water clarification
    Patent number: 4279756
    Abstract: A particulate coagulant/adsorbent for removing suspended impurities and colored substances from water by coagulation comprises a finely divided particulate mineral or clay material, the individual particles of which have been treated to produce a thin hydroxylated surface layer haivng a positive zeta potential at the adsorption pH.A process and an apparatus for water treatment utilizing the coagulant/adsorbent and providing for regeneration and recycling thereof are also described.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: July 21, 1981
    Assignee: Commonwealth Scientific and Industrial Research Organization
    Inventors: Donald E. Weiss, Luis O. Kolarik, Anthony J. Priestley, Nevil J. Anderson