Patents by Inventor Iwao Hattori

Iwao Hattori 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).

  • Publication number: 20240227411
    Abstract: The present invention relates to a pigment dispersion for ink jet ink, including a binder (A), a pigment (B), and an aqueous medium (C). The pigment dispersion is characterized in that the binder (A) is a binder containing a urethane resin (A1) which is a reaction product of polyol (a1), containing polyol (a1-1) having an acid group and polyester polyol (a1-2) other than the polyol (a1-1), with polyisocyanate (a2) containing polyisocyanate (a2-1) having a ring structure, the acid groups possessed by the urethane resin (A1) are partially or entirely neutralized, and the glass transition temperature of the urethane resin (A1) is 70° C. or less.
    Type: Application
    Filed: May 19, 2022
    Publication date: July 11, 2024
    Applicant: DIC Corporation
    Inventors: Naruhito Suzuki, Takashi Nishijima, Minoru Shigemori, Iwao Hattori
  • Publication number: 20240158656
    Abstract: The present invention relates to a pigment dispersion for inkjet containing a dispersant (A), a pigment (B), and water (C), the dispersant (A) containing a non-cross-linked resin (A1) at least having a structural unit (a1) derived from an acid group-containing monomer, in the resin (A1), the acid groups in the structural unit (a1) being neutralized using a tertiary alkanolamine with a neutralization rate of greater than 100% and 200% or less with a neutralization rate when the acid groups are neutralized with a theoretical equivalent as 100%, and the tertiary alkanolamine having two to three hydroxy groups in a structure and having a boiling point of 150 to 330° C., and also relates to an inkjet ink containing the pigment dispersion for inkjet and a printed product printed with the inkjet ink.
    Type: Application
    Filed: March 31, 2022
    Publication date: May 16, 2024
    Applicant: DIC Corporation
    Inventors: Takashi Nishijima, Iwao Hattori, Minoru Shigemori, Naruhito Suzuki
  • Patent number: 10793690
    Abstract: Provided is a prepreg including: a urethane (meth)acrylate that is a reaction product of a polyisocyanate compound comprising a polymethylene polyphenyl polyisocyanate as an essential component with a hydroxyl group-containing compound comprising, as an essential component, a compound having a hydroxyl group and a (meth)acryloyl group; a polymerization initiator; and carbon fibers. The prepreg is excellent in workability and molding property and can form molded products excellent in various physical properties such as interlayer shear strength and heat resistance. Thus, the prepreg is suitable for use in various molded articles including automotive members.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: October 6, 2020
    Assignee: DIC Corporation
    Inventors: Yuko Takikawa, Tomoaki Shinchi, Iwao Hattori
  • Publication number: 20190092915
    Abstract: Provided is a prepreg including: a urethane (meth)acrylate that is a reaction product of a polyisocyanate compound comprising a polymethylene polyphenyl polyisocyanate as an essential component with a hydroxyl group-containing compound comprising, as an essential component, a compound having a hydroxyl group and a (meth)acryloyl group; a polymerization initiator; and carbon fibers. The prepreg is excellent in workability and molding property and can form molded products excellent in various physical properties such as interlayer shear strength and heat resistance. Thus, the prepreg is suitable for use in various molded articles including automotive members.
    Type: Application
    Filed: March 9, 2017
    Publication date: March 28, 2019
    Inventors: Yuko Takikawa, Tomoaki Shinchi, Iwao Hattori
  • Patent number: 6395393
    Abstract: There is disclosed an optical fiber core wire binder, comprising (A) a radical-polymerizable oligomer, (B) a radical-polymerizable monomer, (C) a photopolymerization initiator, and at least one compound selected from the group consisting of (D) modified silicone compounds and (E) nitrogen/sulfur atom-containing compounds, with the content of the compound selected from the group consisting of the components (D) and (E) being 0.01 to 20% by weight of the total of the components (A) to (E), and with the surface tension being 30 &mgr;N/m or less at 23° C. The optical fiber core wire binder can restrain bubbles from being involved or remaining when optical fiber core wires are being twisted while it is filled and applied around them, and it can form a cured product (solid material) that is excellent in workability and adhesion to a tension member.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: May 28, 2002
    Assignees: The Furukawa Electric Co., Ltd., Dainippon Ink and Chemicals, Inc.
    Inventors: Masashi Akita, Hideaki Kambe, Kazuhisa Kashihara, Osamu Saitoh, Iwao Hattori
  • Patent number: 6174604
    Abstract: There is disclosed an optical fiber core wire binder, comprising (A) a radical-polymerizable oligomer, (B) a radical-polymerizable monomer, (C) a photopolymerization initiator, and at least one compound selected from the group consisting of (D) modified silicone compounds and (E) nitrogen/sulfur atom-containing compounds, with the content of the compound selected from the group consisting of the components (D) and (E) being 0.01 to 20% by weight of the total of the components (A) to (E), and with the surface tension being 30 &mgr;N/m or less at 23° C. The optical fiber core wire binder can restrain bubbles from being involved or remaining when optical fiber core wires are being twisted while it is filled and applied around them, and it can form a cured product (solid material) that is excellent in workability and adhesion to a tension member.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: January 16, 2001
    Assignees: The Furukawa Electric Co., Ltd., Dainippon Ink and Chemicals, Inc.
    Inventors: Masashi Akita, Hideaki Kambe, Kazuhisa Kashihara, Osamu Saitoh, Iwao Hattori