Patents by Inventor Michitoshi Koyanagi

Michitoshi Koyanagi 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).

  • Process for coating employing a two-pack type aqueous paint composition
    Patent number: 4132686
    Abstract: An improvement in a process for coating a surface with a aqueous paint composition containing as the primary film-forming components: a synthetic polycarboxylic acid resin as the main binder component; an amino resin as a heat curing cross-linking agent for the polycarboxylic acid resin and a neutralizing agent for neutralizing the acid groups of the polycarboxylic acid resin, is provided. The improvement is applying the aqueous paint composition to the surface as two compositions (A) comprising a synthetic polycarboxylic acid resin having a neutralization degree of 30 to 70% and an amino resin; and (B) comprising a synthetic polycarboxylic acid resin having a neutralication degree 30 to 80% higher than that of the polycarboxylic acid resin of (A) and an amino resin, or (C) a neutralizing agent comprising ammonia or an organic amine.
    Type: Grant
    Filed: February 3, 1977
    Date of Patent: January 2, 1979
    Assignee: Shinto Paint Co., Ltd.
    Inventors: Kazuaki Toyoshima, Michitoshi Koyanagi, Tameyuki Suzuki