Patents by Inventor Fumio Hunakoshi

Fumio Hunakoshi 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: 6054033
    Abstract: A cathodic electrodeposition paint composition for one or two coats finish comprises (a) an amine-modified polyphenol epoxy resin, (b) an acrylic copolymer having ionizable groups, and (c) resin particles having a particle size of less than 1.0 .mu.m comprised of a core of gelled hydrophobic resin and a shell layer of amino group-containing hydrophilic resin. Components (a), (b) and (c) as well as blocked polyisocyanate crosslinker are dispersed in an aqueous medium containing a neutralizing agent. The paint composition is effective for diminishing the occurrence of stripe-like recessed patterns in the finished steel substrate.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: April 25, 2000
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Fumio Hunakoshi, Toshiyuki Ishii