Patents by Inventor Mitsuko Kitanohara

Mitsuko Kitanohara 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: 11542402
    Abstract: An oil-based inkjet ink is disclosed that contains a pigment, a dispersant formed with an acidic resin, a low-molecular weight amine compound and a basic polymer, and a non-aqueous solvent. A method for producing an oil-based inkjet ink and a method for producing a dispersant is also disclosed.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: January 3, 2023
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Naofumi Ezaki, Shinichiro Shimura, Shinsuke Ozawa, Tsukasa Hamada, Mitsuko Kitanohara, Tetsuya Shiraishi
  • Patent number: 10920096
    Abstract: An oil-based inkjet ink is disclosed that contains a colorant, an oil-soluble resin that is an acrylic-based polymer having a side chain containing a polydimethylsiloxane structure, and a non-aqueous solvent. A method for producing an oil-based inkjet ink is also disclosed.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: February 16, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Shinsuke Ozawa, Mitsuko Kitanohara, Hikaru Sugiura, Yoshifumi Watanabe, Manami Shimizu, Naofumi Ezaki, Tomohiro Matsuzawa
  • Patent number: 10907062
    Abstract: An oil-based inkjet ink is disclosed that contains colored resin particles, an ionic dispersant and a non-aqueous solvent, wherein the colored resin particles contain a colorant and a urethane-urea resin. A method for producing an oil-based inkjet ink is also disclosed.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: February 2, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Tomohiro Matsuzawa, Yoshifumi Watanabe, Naofumi Ezaki, Yasuo Yamamoto, Mitsuko Kitanohara, Manami Shimizu
  • Publication number: 20200239719
    Abstract: An oil-based inkjet ink is disclosed that contains a pigment, a dispersant formed with an acidic resin, a low-molecular weight amine compound and a basic polymer, and a non-aqueous solvent. A method for producing an oil-based inkjet ink and a method for producing a dispersant is also disclosed.
    Type: Application
    Filed: December 17, 2019
    Publication date: July 30, 2020
    Inventors: Naofumi EZAKI, Shinichiro SHIMURA, Shinsuke OZAWA, Tsukasa HAMADA, Mitsuko KITANOHARA, Tetsuya SHIRAISHI
  • Publication number: 20200040117
    Abstract: The purpose of the present invention is to provide a method for manufacturing a polymer having a desired strain. Provided is a method for manufacturing a polymer having a desired strain, said method comprising: a step for polymerizing one or more kinds of starting monomers by irradiating with ultraviolet rays having such an illuminance as to generate the desired strain; and, if required, a step for measuring the strain of the polymers thus formed and selecting a polymer having the desired strain. In one embodiment, provided is a method for determining the illuminance of ultraviolet rays for manufacturing a polymer having a desired strain.
    Type: Application
    Filed: June 27, 2017
    Publication date: February 6, 2020
    Inventors: Mitsuhiro KOUDA, Mitsuko KITANOHARA, Yuya TOMIMORI, Yu MIYAZAWA
  • Publication number: 20200002557
    Abstract: An oil-based inkjet ink is disclosed that contains colored resin particles, an ionic dispersant and a non-aqueous solvent, wherein the colored resin particles contain a colorant and a urethane-urea resin. A method for producing an oil-based inkjet ink is also disclosed.
    Type: Application
    Filed: May 31, 2019
    Publication date: January 2, 2020
    Inventors: Tomohiro MATSUZAWA, Yoshifumi WATANABE, Naofumi EZAKI, Yasuo YAMAMOTO, Mitsuko KITANOHARA, Manami SHIMIZU
  • Publication number: 20190300737
    Abstract: An oil-based inkjet ink is disclosed that contains a colorant, an oil-soluble resin that is an acrylic-based polymer having a side chain containing a polydimethylsiloxane structure, and a non-aqueous solvent. A method for producing an oil-based inkjet ink is also disclosed.
    Type: Application
    Filed: February 19, 2019
    Publication date: October 3, 2019
    Inventors: Shinsuke OZAWA, Mitsuko KITANOHARA, Hikaru SUGIURA, Yoshifumi WATANABE, Manami SHIMIZU, Naofumi EZAKI, Tomohiro MATSUZAWA
  • Publication number: 20180305573
    Abstract: Provided are a clear coating composition which is used for top coats, the composition containing a crosslinking agent and a functional group-containing (meth)acrylate polymer formed by polymerization of a monomer component that includes an aromatic ring-containing (meth)acrylate and a functional group-containing monomer. Also provided is a clear coat composition which is used for top coats, the composition containing a crosslinking agent and a functional group-containing (meth)acrylate polymer formed by polymerization of a monomer component that includes a functional group-containing monomer and a fluorine atom-containing monomer. This clear coat composition has low colorability, has a high refractive index without the use of a filler, provides excellent glossy even when a filler is used, and can be applied to a thick film.
    Type: Application
    Filed: June 29, 2018
    Publication date: October 25, 2018
    Applicants: OSAKA ORGANIC CHEMICAL INDUSTRY LTD., HONDA MOTOR CO., LTD.
    Inventors: Mitsuko Kitanohara, Kazuyoshi Matsuoka, Yoshiyuki Saruwatari, Keisuke Kojima, Masuo Kondo
  • Patent number: 10040965
    Abstract: Provided are a clear coating composition which is used for top coats, the composition containing a crosslinking agent and a functional group-containing (meth)acrylate polymer formed by polymerization of a monomer component that includes an aromatic ring-containing (meth)acrylate and a functional group-containing monomer. Also provided is a clear coat composition which is used for top coats, the composition containing a crosslinking agent and a functional group-containing (meth)acrylate polymer formed by polymerization of a monomer component that includes a functional group-containing monomer and a fluorine atom-containing monomer. This clear coat composition has low colorability, has a high refractive index without the use of a filler, provides excellent glossy even when a filler is used, and can be applied to a thick film.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: August 7, 2018
    Assignees: OSAKA ORGANIC CHEMICAL INDUSTRY LTD., HONDA MOTOR CO., LTD.
    Inventors: Mitsuko Kitanohara, Kazuyoshi Matsuoka, Yoshiyuki Saruwatari, Keisuke Kojima, Masuo Kondo
  • Publication number: 20160297984
    Abstract: Provided are a clear coating composition which is used for top coats, the composition containing a crosslinking agent and a functional group-containing (meth)acrylate polymer formed by polymerization of a monomer component that includes an aromatic ring-containing (meth)acrylate and a functional group-containing monomer. Also provided is a clear coat composition which is used for top coats, the composition containing a crosslinking agent and a functional group-containing (meth)acrylate polymer formed by polymerization of a monomer component that includes a functional group-containing monomer and a fluorine atom-containing monomer. This clear coat composition has low colorability, has a high refractive index without the use of a filler, provides excellent glossy even when a filler is used, and can be applied to a thick film.
    Type: Application
    Filed: November 19, 2014
    Publication date: October 13, 2016
    Applicants: OSAKA ORGANIC CHEMICAL INDUSTRY LTD., HONDA MOTOR CO., LTD.
    Inventors: Mitsuko Kitanohara, Kazuyoshi Matsuoka, Yoshiyuki Saruwatari, Keisuke Kojima, Masuo Kondo