Patents by Inventor Tadaaki HORII

Tadaaki HORII 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).

  • Method for producing (meth)acrylamide papermaking additive and (meth)acrylamide polymer papermaking additive
    Patent number: 10730989
    Abstract: In a method for producing a (meth)acrylamide polymer papermaking additive obtaining a (meth)acrylamide polymer by obtaining a first polymer by polymerizing a first polymerization component containing a (meth)acrylamide and polymerizing a second polymerization component containing a tertiary amino monomer under the presence of the first polymer, the first polymerization component and/or the second polymerization component contain(s) a (meth)allyl sulfonate, a ratio of the tertiary amino monomer in the first polymerization component with respect to 100 mol of the (meth)acrylamide in the first polymerization component is 0.1 mol or less, and a ratio of the (meth)acrylamide in the second polymerization component with respect to 100 mol of the tertiary amino monomer in the second polymerization component is 1.0 mol or less.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: August 4, 2020
    Assignee: HARIMA CHEMICALS, INCORPORATED
    Inventors: Tadaaki Horii, Hirotaka Sato, Takanori Kurihara, Takahiro Fujiwara, Kazushige Inaoka
  • METHOD FOR PRODUCING (METH)ACRYLAMIDE POLYMER PAPERMAKING ADDITIVE AND (METH)ACRYLAMIDE POLYMER PAPERMAKING ADDITIVE
    Publication number: 20200140596
    Abstract: In a method for producing a (meth)acrylamide polymer papermaking additive obtaining a (meth)acrylamide polymer by obtaining a first polymer by polymerizing a first polymerization component containing a (meth)acrylamide and polymerizing a second polymerization component containing a tertiary amino monomer under the presence of the first polymer, the first polymerization component and/or the second polymerization component contain(s) a (meth)allyl sulfonate, a ratio of the tertiary amino monomer in the first polymerization component with respect to 100 mol of the (meth)acrylamide in the first polymerization component is 0.1 mol or less, and a ratio of the (meth)acrylamide in the second polymerization component with respect to 100 mol of the tertiary amino monomer in the second polymerization component is 1.0 mol or less.
    Type: Application
    Filed: April 27, 2018
    Publication date: May 7, 2020
    Applicant: Harima Chemicals, Incorporated
    Inventors: Tadaaki HORII, Hirotaka SATO, Takanori KURIHARA, Takahiro FUJIWARA, Kazushige INAOKA
  • ACRYLAMIDE-BASED POLYMER, PAPER STRENGTH AGENT, AND PAPER
    Publication number: 20180163346
    Abstract: A papermaking chemical consisting of an aqueous solution of an acrylamide-based polymer, the acrylamide-based polymer being a polymer of a polymer component, wherein the polymer component comprises (meth)acrylamide, a quaternary ammonium-based monomer, and (meth)allylsulfonic acid salt, but does not include either a crosslinkable monomer containing nitrogen, or a tertiary amino-based monomer.
    Type: Application
    Filed: February 9, 2018
    Publication date: June 14, 2018
    Applicant: HARIMA CHEMICALS, INCORPORATED
    Inventors: Hirotaka SATO, Tadaaki Horii, Takanori Kurihara, Takahiro Fujiwara, Kazushige Inaoka
  • Acrylamide-based polymer, paper strength agent, and paper
    Patent number: 9995001
    Abstract: The acrylamide-based polymer is produced by polymerizing a polymer component including (meth)acrylamide, a quaternary ammonium-based monomer, and (meth)allylsulfonic acid salt, but not including either a crosslinkable monomer containing nitrogen or a tertiary amino-based monomer.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: June 12, 2018
    Assignee: HARIMA CHEMICALS, INCORPORATED
    Inventors: Hirotaka Sato, Tadaaki Horii, Takanori Kurihara, Takahiro Fujiwara, Kazushige Inaoka
  • ACRYLAMIDE-BASED POLYMER, PAPER STRENGTH AGENT, AND PAPER
    Publication number: 20160340831
    Abstract: The acrylamide-based polymer is produced by polymerizing a polymer component including (meth)acrylamide, a quaternary ammonium-based monomer, and (meth)allylsulfonic acid salt, but not including either a crosslinkable monomer containing nitrogen or a tertiary amino-based monomer.
    Type: Application
    Filed: October 28, 2015
    Publication date: November 24, 2016
    Applicant: HARIMA CHEMICALS, INCORPORATED
    Inventors: Hirotaka SATO, Tadaaki HORII, Takanori KURIHARA, Takahiro FUJIWARA, Kazushige INAOKA