Patents by Inventor James T. K. Woo

James T. K. Woo 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).

  • Cathodic electrocoating compositions containing acid-functional aminoplast and flexibilized, epoxy-free, aminated resin
    Patent number: 4119599
    Abstract: Heat cured coatings cathodically electrodeposited from an aqueous dispersion of (a) an ionized reaction product of an epoxy resin and a monoamino alcohol or phenol, said reaction product also having a pendant hydrocarbon group, (b) an acid-functional aminoplast resin, and (c) a water soluble acid solubilizer, where the dispersion is free from water soluble acid which will be retained in the heat cured resinous coating are found to provide exceptional resistance to corrosion of ferrous metal substrates upon exposure to salt spray or detergent solutions.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: October 10, 1978
    Assignee: SCM Corporation
    Inventors: James T. K. Woo, James M. Evans
  • Cathodic electrocoating process
    Patent number: 4066525
    Abstract: Heat cured coatings cathodically electrodeposited from an aqueous dispersion of (a) an ionized reaction product of an epoxy resin and a monoamino alcohol or phenol, said reaction product also having a pendant hydrocarbon group, (b) an acid-functional aminoplast resin, and (c) a water soluble acid solubilizer, where the dispersion is free from water soluble acid which will be retained in the heat cured resinous coating are found to provide exceptional resistance to corrosion of ferrous metal substrates upon exposure to salt spray or detergent solutions.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: January 3, 1978
    Assignee: SCM Corporation
    Inventors: James T. K. Woo, James M. Evans