Patents by Inventor Michael A. Toynton

Michael A. Toynton 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).

  • Patent number: 4999091
    Abstract: A process for coating an article simultaneously with a metal and a film-forming polymer which comprises passing an electric current at a current density of 1 to 35 milliamps cm.sup.-2 between the article as a cathode and a counter-electrode immersed in an aqueous coating composition having an inherent pH of 2.5 to 9.5, comprising:(a) a dispersion in an aqueous carrier of film-forming polymer having steric stabilizing units and being free from ionic stabilizing units the dispersion being one which has a critical coalescence value more negative than -0.3 units and(b) at least 0.06% by weight based on the total composition of one or more zinc, cadmium, cobalt, iron, lead or nickel salts such that the dispersion has a critical coalescence temperature of 35.degree. to 90.degree. C.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: March 12, 1991
    Assignee: Imperial Chemical Industries PLC
    Inventors: Andrew Doroszkowski, Michael A. Toynton, Peter Butler