Patents by Inventor Mikio Shimakawa

Mikio Shimakawa 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: 6727310
    Abstract: The present invention relates to a water-based metallic coating composition comprising a resin composition for a water-based coating composition, a metallic pigment, metal silicate and a polyamide resin and capable of forming a coating film which is excellent in a flip-flop property and which is free of metallic mottling.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: April 27, 2004
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Yutaka Mizutani, Eiji Hamaoka, Mikio Shimakawa
  • Publication number: 20010053810
    Abstract: The present invention relates to a water-based metallic coating composition comprising a resin composition for a water-based coating composition, a metallic pigment, metal silicate and a polyamide resin and capable of forming a coating film which is excellent in a flip-flop property and which is free of metallic mottling.
    Type: Application
    Filed: May 11, 2001
    Publication date: December 20, 2001
    Inventors: Yutaka Mizutani, Eiji Hamaoka, Mikio Shimakawa
  • Patent number: 6177488
    Abstract: The present invention provides an aqueous colored base coating composition (A) comprising a hydroxyl- and carboxyl-containing acrylic resin (A-1), a melamine resin (A-2), an alicyclic epoxy-containing compound (A-3), a neutralizing agent (A-4) and a coloring pigment (A-5). The present invention further provides a method for forming a topcoat which comprises applying the aqueous colored base coating composition (A) to a substrate and applying to the base coat an organic solvent type clear coating composition (B) to be cured by the crosslinking reaction between a carboxyl group and an epoxy group.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: January 23, 2001
    Assignee: Kansai Paint Company, Limited
    Inventors: Akira Kasari, Hiroaki Oda, Junichi Kajima, Mikio Shimakawa
  • Patent number: 6165621
    Abstract: A method for forming a multi-layer metallic coating film, the method being a 3-coat system comprising the steps of applying the following coating compositions (A), (B) and (C) in this order to a metal substrate coated with a cationically electrodepositable coating composition; (A) an organic solvent-based thermosetting metallic first base coating composition which comprises a neutralized carboxyl-containing resin having an acid value of 5 to 100 mg KOH/g, an amino resin and a metallic pigment, the composition having a substrate-hiding power corresponding to up to 3% transmittance of light at a wavelength of 400 to 700 nm in a 15 .mu.m-thick cured coating film, (B) an aqueous thermosetting second base coating composition which has a transparency corresponding to 10 to 95% transmittance of light at a wavelength of 400 to 700 nm in a 15-.mu.m thick cured coating film, and (C) an organic solvent-based thermosetting clear coating composition.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: December 26, 2000
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Akira Kasari, Hiroaki Oda, Mitsugu Endo, Mikio Shimakawa, Tetsuya Yokoyama
  • Patent number: 5827575
    Abstract: The present invention provides a method for forming a topcoat which comprises applying an aqueous colored base coating composition comprising a hydroxyl- and carboxyl-containing acrylic resin, a melamine resin, an alicyclic epoxy-containing compound, a neutralizing agent, and a coloring pigment to a substrate and applying to the base coat an organic solvent type clear coating composition to be cured by the crosslinking reaction between a carboxyl group and an epoxy group.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: October 27, 1998
    Assignee: Kansai Paint Company, Limited
    Inventors: Akira Kasari, Hiroaki Oda, Junichi Kajima, Mikio Shimakawa
  • Patent number: 5705595
    Abstract: This invention provides an aqueous intercoat composition comprising, as main components, (A) a polyester resin having a hydroxyl group and a carboxyl group in one molecule, (B) a blocked product of at least one polyisocyanate selected from a polymer of aliphatic polyisocyanate, an adduct of said polymer with an active hydrogen-containing compound and an adduct of aliphatic polyisocyanate with an active hydrogen-containing compound, and (C) water. The aqueous intercoat composition of the invention is capable of forming a coating film excellent in chipping resistance.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: January 6, 1998
    Assignee: Kansai Paint Company, Limited
    Inventors: Hiroaki Oda, Mikio Shimakawa, Hisashi Isaka, Naoji Matsumoto