Patents by Inventor Ann E. Knight

Ann E. Knight 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).

  • Uretonimine-modified emulsifiable polyisocyanate compositions
    Patent number: 5364897
    Abstract: The invention provides polyisocyanate compositions having a uretonimine-modified isocyanate content of from 4% to 75% by weight, calculated on the whole composition, comprising a uretonimine-modified polyisocyanate and a non-ionic surface-active agent devoid of hydroxy, amino and carboxylic acid groups, and aqueous emulsions thereof having improved stability and pot-life.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: November 15, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventors: Ann E. Knight, Godelieve Bourbon