Patents by Inventor Robert C. Groot

Robert C. Groot 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).

  • Stable dispersion of positively charged polyfluorocarbon resin particles
    Patent number: 4302374
    Abstract: An aqueous stable dispersion of positively charged polyfluorocarbon resin particles having a particle size of less than about 10 .mu.m contains both a cationic and a nonionic fluorocarbon surfactant in a molar ratio between 25:1 and 1:3.5 and in a total amount of at least 3.times.10.sup.-3 millimoles per m.sup.2 of surface area of said particles.The fluorocarbon surfactants give the dispersions storage-stability even in the presence of a strong electrolyte and make them suitable for use in electroplating baths.
    Type: Grant
    Filed: March 10, 1978
    Date of Patent: November 24, 1981
    Assignee: AKZO N.V.
    Inventors: Kees Helle, Robert C. Groot