Patents by Inventor Naoji Matsumoto

Naoji Matsumoto 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).

  • Aqueous intercoat composition
    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
  • Process for forming overcoat
    Patent number: 5641574
    Abstract: A process for forming an overcoat by the two-coat one-bake method wherein a base coat composition and a clear coat composition are applied to a substrate ##STR1## wet-on-wet and thereafter cured at the same time by heating, the process being characterized in that the base coat composition is an aqueous coating composition consisting primarily of: (I) an aqueous dispersion or solution of a polymer containing a crosslinkable functional group, (II) a crosslinking agent, (III) a coloring pigment, and (IV) water, the clear coat composition being a coating composition comprising: (A) at least one resin selected from the group consisting of (i) a resin having at least one epoxy group and at least one hydroxyl group in the molecule, (ii) a resin mixture of (ii-1) a resin having at least two epoxy groups in the molecule and (ii-2) a resin having at least two hydroxyl groups in the molecule, (iii) a resin having at least two epoxy groups in the molecule, and (iv) any mixture thereof, (B) a crosslinking agent comprising
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: June 24, 1997
    Assignees: E. I. Du Pont de Nemours and Company, Kansai Paint Company, Limited
    Inventors: Akira Kasari, Satoshi Ikushima, Osamu Isozaki, Naoji Matsumoto, John David Nordstrom
  • Process for forming overcoat
    Patent number: 5609960
    Abstract: A process for forming an overcoat by the two-coat one-bake method wherein a basecoat composition and a clear coat composition are applied to a substrate wet-on-wet and thereafter cured at the same time by heating, the process being characterized in that the base coat composition is a coating composition consisting primarily of a hydroxyl-containing resin, an amine resin, a pigment and an organic solvent, the clear coat composition being a coating composition comprising:(A) at least one resin selected from the group consisting of (i) a resin having at least one epoxy group and at least one hydroxyl group in the molecue, (ii) a resin mixture of (ii-1) a resin having at least two epoxy groups in the molecule and (ii-2) a resin having at least two hydroxyl groups in the molecule, (iii) a resin having at least two epoxy groups in the molecule, and (iv) any mixture thereof,(B) a crosslinking agent comprising a compound having at least two noncyclic acid anhydride groups and represented by the formula ##STR1## where
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: March 11, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Akira Kasari, Satoshi Ikushima, Osamu Isozaki, Naoji Matsumoto, John D. Nordstrom