Patents by Inventor Patricia Lesley James

Patricia Lesley James 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).

  • Process for the production of a dispersion of condensation polymer particles containing a modifying agent
    Patent number: 3985700
    Abstract: A process is described for producing a dispersion of a condensation polymer in a hydrocarbon or chlorinated hydrocarbon liquid in which the polymer is insoluble, the disperse particles of polymer incorporating a pigment, filler or like modifying agent. At least one of the reactants from which the polymer is to be derived is heated in the liquid in the form of the liquid disperse phase of an emulsion in that liquid, made with the aid of a specified emulsifying agent, and the modifying agent is dispersed in that liquid disperse phase prior to completion of the polymer-forming reaction.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: October 12, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Peter Francis Nicks, Peter George Osborn, Morice William Thompson, Patricia Lesley James