Patents by Inventor Shin'ichi Kuwamura

Shin'ichi Kuwamura 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).

  • Waterborne resin emulsion and waterborne coating
    Patent number: 6664330
    Abstract: An emulsion of a monomer having a radical polymerizable unsaturated bond, which is obtained by emulsifying the monomer in the presence of an emulsifier, and a mixed solution of a specific non-radical polymerizable organosilicon compound and a polymerization initiator, which is soluble in the non-radical polymerizable organosilicon compound, are added to an aqueous medium, followed by emulsion polymerization, hydrolysis, and condensation, to produce a waterborne resin emulsion and a waterborne coating which can form a coating film having superior durability such as water resistance, weathering resistance, or the like.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: December 16, 2003
    Assignee: Dainippon and Chemicals, Inc.
    Inventors: Masahito Furo, Shin′ichi Kuwamura
  • Aqueous curable resin composition
    Patent number: 6482890
    Abstract: An object is to remarkably improve the water resistance and weather resistance of the cured coating film in the aqueous curable resin composition. An aqueous dispersion is used as a main agent which contains, as essential components, gel-like resin dispersed particles having a functional group selected from a salt of a tertiary amino group or a salt of an acid group and an aqueous medium, and a compound having both an epoxy group and a hydrolyzable silyl group is used as a curing agent.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: November 19, 2002
    Assignee: Dainippon Ink and Chemical, Inc.
    Inventors: Teruki Kiyohara, Shin'ichi Kuwamura
  • Organic composite-plated steel plate and resin composition for coating material used therein
    Patent number: 6005029
    Abstract: The present invention comprises an improved organic composite-plated steel plate which is obtained by applying a thermosetting resin to a chromate-coated alloy-plated steel plate and curing this, wherein, various aqueous resin compositions having the form of basic coating film formation components, such as, for example, aqueous vinyl modified epoxy ester resins, or aqueous vinyl modified epoxy ester resin / blocked isocyanate compound-types, or aqueous vinyl modified epoxy ester resin / blocked isocyanate compounds / colloidal silica-types, are used as the thermosetting resin described above.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: December 21, 1999
    Assignees: Dainippon Ink and Chemicals, Inc., Nippon Steel Corporation
    Inventors: Shin'ichi Kuwamura, Atsushi Miyagaki, Kiyoshi Ohnishi, Masahide Amemoto, Hisao Odashima, Keitaro Shibata, Akihiro Kasuya, Kiyoshi Ohmori
  • Organic composite-plated steel plate and resin composition for coating material used therein
    Patent number: 5637403
    Abstract: The present invention comprises an improved organic composite-plated steel plate which is obtained by applying a thermosetting resin to a chromate-coated alloy-plated steel plate and curing this, wherein, various aqueous resin compositions having the form of basic coating film formation components, such as, for example, aqueous vinyl modified epoxy ester resins, or aqueous vinyl modified epoxy ester resin/blocked isocyanate compound-types, or aqueous vinyl modified epoxy ester resin/blocked isocyanate compounds/colloidal silica-types, are used as the thermosetting resin described above.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: June 10, 1997
    Assignees: Dainippon Ink and Chemicals, Inc., Nippon Steel Corporation
    Inventors: Shin'ichi Kuwamura, Atsushi Miyagaki, Kiyoshi Ohnishi, Masahide Amemoto, Hisao Odashima, Keitaro Shibata, Akihiro Kasuya, Kiyoshi Ohmori
  • Gelled fluoride resin fine particle dispersion, method of production thereof, and preservation method for an alkaline inorganic hardened body utilizing the same
    Patent number: 5616645
    Abstract: The present invention relates to a gelled fluoride resin fine particle dispersion for use as a coating, to a method of production thereof, and to a method using this gelled fluoride resin fine dispersion to protect an alkaline inorganic hardened body.The objective of the present invention is to provide an aqueous resin for use as a coating, this aqueous resin being able to form a high performance coating film that is superior in its ability to inhibit the leaching out of the alkaline substance from the alkaline inorganic hardened body, which has excellent weatherability, water resistance, alkaline resistance, and dirt picking resistance.The present invention accomplishes the stated objective through the utilization of gelled fine particles of a fluorine containing resin.The present invention may be used in the coating field.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: April 1, 1997
    Assignee: Dainippon Ink & Chemicals, Inc.
    Inventors: Shin'ichi Kuwamura, Yoshinobu Deguchi, Tokio Goto, Fumio Yoshino