Patents by Inventor Terence E. Heald

Terence E. Heald 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).

  • Stabilized aqueous dyestuff dispersions
    Patent number: 4270917
    Abstract: Aqueous dispersions of dyestuffs which are susceptible to crystal growth of the dyestuff particles in the dispersion, stabilized against such crystal growth by addition to the dispersion of a phosphated alkylphenol ethoxylate.
    Type: Grant
    Filed: October 2, 1979
    Date of Patent: June 2, 1981
    Assignee: Imperial Chemical Industries Limited
    Inventors: Terence E. Heald, Roy Porter