Patents by Inventor Mami Yamada

Mami Yamada 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).

  • Ultrafine particles of Prussian blue-type metal complex, dispersion liquid thereof and their production methods
    Patent number: 7678188
    Abstract: Disclosed is a method for producing ultrafine particles of a Prussian blue-type metal complex wherein (A) an aqueous solution containing an anionic metal cyano complex having a metal atom M1 as the central metal is mixed with an aqueous solution containing metal cations of a metal atom M2 for precipitating a crystal of a Prussian blue-type metal complex having the metal atom M1 and the metal atom M2; then (B) a solution obtained by dissolving a ligand L in a solvent is mixed with the crystal of the Prussian blue-type metal complex for forming a dispersion liquid of ultrafine particles of the Prussian blue-type metal complex; and the (C) the Prussian blue-type metal complex is separated from the dispersion liquid as nanometer-sized ultrafine particles.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: March 16, 2010
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Tohru Kawamoto, Hisashi Tanaka, Masato Kurihara, Masatomi Sakamoto, Mami Yamada
  • ULTRAFINE PARTICLES OF PRUSSIAN BLUE-TYPE METAL COMPLEX, DISPERSION LIQUID THEREOF AND THEIR PRODUCTION METHODS
    Publication number: 20090211494
    Abstract: Disclosed is a method for producing ultrafine particles of a Prussian blue-type metal complex wherein (A) an aqueous solution containing an anionic metal cyano complex having a metal atom M1 as the central metal is mixed with an aqueous solution containing metal cations of a metal atom M2 for precipitating a crystal of a Prussian blue-type metal complex having the metal atom M1 and the metal atom M2; then (B) a solution obtained by dissolving a ligand L in a solvent is mixed with the crystal of the Prussian blue-type metal complex for forming a dispersion liquid of ultrafine particles of the Prussian blue-type metal complex; and the (C) the Prussian blue-type metal complex is separated from the dispersion liquid as nanometer-sized ultrafine particles.
    Type: Application
    Filed: February 8, 2006
    Publication date: August 27, 2009
    Applicant: National Institute of Advanced Industrial Science and Technology
    Inventors: Tohru Kawamoto, Hisashi Tanaka, Masato Kurihara, Masatomi Sakamoto, Mami Yamada
  • Electrode for Reversible Color Change Display Device and Method of Producing the Same, and Reversible Color Change Display Device and Reversible Color Change Lighting Control Device
    Publication number: 20080266643
    Abstract: An electrode member (10A) for a reversibly color changeable display device, having: a transparent electrically-conductive structural layer (10C); and a reversibly color changeable film layer (3) disposed at one side of the transparent electrically-conductive structural layer (10C), the reversibly color changeable film layer (3) being formed by a dispersion liquid containing ultrafine particles, so that a color of the reversibly color changeable film layer (3) can be changed under control, by applying a voltage to the transparent electrically-conductive structural layer (10C) and an electrically-conductive counter electrode structural layer (10B), with an electrolyte layer (4) provided at one side of the reversibly color changeable film layer (3), and the electrically-conductive counter electrode structural layer (10B) provided at an outside of the electrolyte layer (4).
    Type: Application
    Filed: August 16, 2006
    Publication date: October 30, 2008
    Applicants: National Institute of Advanced Industrial Science and Technology, Japan Advanced Institute of Science and Technology
    Inventors: Tohru Kawamoto, Hisashi Tanaka, Shigeo Hara, Madoka Tokumoto, Masato Kurihara, Masatomi Sakamoto, Mami Yamada