Patents by Inventor Maurice C. M. Man

Maurice C. M. Man 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 inhibiting formation of and breaking of mercury butter in chlor-alkali cells
    Patent number: 4391681
    Abstract: The present invention relates to a method of inhibiting the formation of and/or breaking of preformed mercury butter in chlor-alkali cells. The method comprises introducing at any one of the numerous stages of the electrolytic process an aqueous solution of a surfactant material which enables the interfacial tension of the sodium-amalgam interface to be increased to or maintained above a value of 180 dynes/cm. The surfactants may be extracts of decaying vegetation, solutions of carboxylic acids or chlorohydrocarbons. Extracts containing lignite or humic acids are most effective.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: July 5, 1983
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Susan Anderson, David E. Brown, David E. Graham, Mahmood N. Mahmood, Maurice C. M. Man
  • Method of catalyzing the evolution of gaseous hydrogen
    Patent number: 4279713
    Abstract: In chlor-alkali cells, the cathode may consist of a nickel screen carrying 15.6 mg Co.sub.2 NiS.sub.4 bonded by 4.4 mg polytetrafluoroethylene per cm.sup.2.
    Type: Grant
    Filed: June 22, 1979
    Date of Patent: July 21, 1981
    Assignee: National Research Development Corporation
    Inventors: Alfred C. C. Tseung, Maurice C. M. Man