Patents by Inventor Tatsufumi Yamazaki

Tatsufumi Yamazaki 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).

  • Polymerizable compound and optically anisotropic body
    Patent number: 11046889
    Abstract: The polymerizable liquid crystal compound has reverse wavelength dispersion or low wavelength dispersion and has high solubility in various solvents. The polymerizable liquid crystal compound provides an optically anisotropic body having high adhesiveness to substrates (or alignment films), by adding the polymerizable liquid crystal compound to a polymerizable composition and polymerizing the polymerizable composition using ultraviolet light. The invention provides a polymerizable composition containing the polymerizable liquid crystal compound having reverse wavelength dispersion or low wavelength dispersion, a polymer obtained by polymerizing the polymerizable composition, and an optically anisotropic body using the polymer.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: June 29, 2021
    Assignee: DIC CORPORATION
    Inventors: Yoshitaka Saito, Tatsufumi Yamazaki, Masahiro Horiguchi, Junichi Mamiya, Toru Tsuruta
  • Polymerizable compound, composition, polymer, optically anisotropic body, liquid crystal display element, and organic EL display
    Patent number: 10633353
    Abstract: It is an object of the present invention to provide a polymerizable compound having a good liquid crystal property, a good alignment property, sufficient solubility in solvents, high preservation stability in a solution state, and high optical stability; a composition including the polymerizable compound; a polymer produced by polymerizing the polymerizable compound, such as a resin produced using the polymerizable compound; an optically anisotropic body including the polymer; and a liquid crystal display element and an organic EL device that include the optically anisotropic body. As a result of conducting intensive studies in order to achieve the above object, the compound represented by General Formula (I) is developed.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: April 28, 2020
    Assignee: DIC CORPORATION
    Inventors: Sayaka Nose, Yuji Ohashi, Junichi Mamiya, Akihiro Koiso, Tatsufumi Yamazaki
  • POLYMERIZABLE COMPOUND AND OPTICALLY ANISOTROPIC BODY
    Publication number: 20180362847
    Abstract: The polymerizable liquid crystal compound has reverse wavelength dispersion or low wavelength dispersion and has high solubility in various solvents. The polymerizable liquid crystal compound provides an optically anisotropic body having high adhesiveness to substrates (or alignment films), by adding the polymerizable liquid crystal compound to a polymerizable composition and polymerizing the polymerizable composition using ultraviolet light. The invention provides a polymerizable composition containing the polymerizable liquid crystal compound having reverse wavelength dispersion or low wavelength dispersion, a polymer obtained by polymerizing the polymerizable composition, and an optically anisotropic body using the polymer.
    Type: Application
    Filed: December 1, 2016
    Publication date: December 20, 2018
    Applicant: DIC Corporation
    Inventors: Yoshitaka Saito, Tatsufumi Yamazaki, Masahiro Horiguchi, Junichi Mamiya, Toru Tsuruta
  • POLYMERIZABLE COMPOUND, COMPOSITION, POLYMER, OPTICALLY ANISOTROPIC BODY, LIQUID CRYSTAL DISPLAY ELEMENT, AND ORGANIC EL DEVICE
    Publication number: 20170260150
    Abstract: It is an object of the present invention to provide a polymerizable compound having a good liquid crystal property, a good alignment property, sufficient solubility in solvents, high preservation stability in a solution state, and high optical stability; a composition including the polymerizable compound; a polymer produced by polymerizing the polymerizable compound, such as a resin produced using the polymerizable compound; an optically anisotropic body including the polymer; and a liquid crystal display element and an organic EL device that include the optically anisotropic body. As a result of conducting intensive studies in order to achieve the above object, the compound represented by General Formula (I) is developed.
    Type: Application
    Filed: December 1, 2015
    Publication date: September 14, 2017
    Applicant: DIC Corporation
    Inventors: Sayaka Nose, Yuji Ohashi, Junichi Mamiya, Akihiro Koiso, Tatsufumi Yamazaki