Patents by Inventor Hiroyuki Nakazumi

Hiroyuki Nakazumi 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).

  • ORGANIC ELECTROLUMINESCENCE MATERIAL AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME
    Publication number: 20150179961
    Abstract: An organic electroluminescence material and an organic electroluminescence device, the material being represented by the following Chemical Formula 1:
    Type: Application
    Filed: February 23, 2015
    Publication date: June 25, 2015
    Inventors: Ichinori TAKADA, Hiroyuki NAKAZUMI, Shigeyuki YAGI
  • Microcapsules containing a radiation sensitive composition and their use
    Patent number: 6524763
    Abstract: The object of the present invention is to provide a material which takes on a color or which changes its colors when selectively sensitized by ionizing radiation (especially by low doses of radiation) and which is not sensitive to visible and ultraviolet light etc. This is achieved by microcapsules containing a radiation sensitive composition comprising leuco compounds (a) and organic halogen compounds (b) as indispensable components.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: February 25, 2003
    Assignees: The Japan Atomic Power Company, Nuclear Fuel Industries, Ltd.
    Inventors: Yuji Kuroda, Masahiko Seki, Yumiko Fujita, Mitsuto Montani, Takeshi Sakai, Shozo Suefuku, Hiroyuki Nakazumi
  • Ink composition, pattern forming method, and color filter
    Patent number: 6416174
    Abstract: An ink composition having a pigment in its droplets, which are adhered onto the surface such as glass, ceramics or polyester resins of a base material, always dispersed uniformly is ejected from a nozzle by an ink-jet method to directly form a prescribed pattern of a colored layer of a color filter on the surface of the base material.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: July 9, 2002
    Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.
    Inventors: Takeo Ito, Kazuo Sakai, Hiroyuki Nakazumi
  • Color coating compositions
    Patent number: 6262187
    Abstract: Objects of the present invention are to provide colored coating compositions which can form easily a colored glass gel coating film being excellent in water resistance, boiling water resistance, alkali resistance, weather resistance, etc. at low temperatures on the outer surface of glass products, metal products, etc. and to provide colored coating compositions with which colored bottles having no haze can be obtained even if the bottles are coated in a high-humidity environment. The colored coating compositions according to the present invention comprise a sol-gel liquid obtained by polycondensation of phenyltrialkoxysilane or an oligomer thereof, acryl polyol, polyester polyol, polyether polyol and/or lower alkyl polyol (or the acryl polyol, the polyester polyol and/or the polyether polyol and a polyisocyanate resin), and an organic coloring agent.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: July 17, 2001
    Assignee: Nagase Chemtex Corporation
    Inventors: Tsutomu Minami, Hiroyuki Nakazumi, Yoshiaki Sakashita, Kazuhisa Ishii, Hidefumi Kanazawa, Mikio Ueda, Masayuki Funato
  • Color filters and methods of manufacturing the same
    Patent number: 5667888
    Abstract: The composite layer according to the present invention comprises a substrate and a colored layer formed on the surface of this substrate. This colored layer contains a transparent layer and a coloring agent dispersed within the transparent layer, and this transparent layer is made of an inorganic gel or glass material, while the coloring agent contains dyes or pigments. The composite layers of the present invention are suitable for use in products such as construction materials with the appearance of marble, colored glass materials for decorative purposes, or color filters.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: September 16, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiko Yoshida, Masaki Ikeda, Kunio Kimura, Atsushi Nishino, Hiroyuki Nakazumi, Noboru Tohge, Tsutomu Minami