TREA

Akinori Kumagai

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  • Ageo-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Polishing liquid and polishing method
    • Patent number 11,339,309
    • Issue date May 24, 2022
    • Mitsui Mining & Smelting Co., Ltd.
    • Ken Matsuo
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Polishing slurry and polishing material
    • Patent number 11,015,086
    • Issue date May 25, 2021
    • Mitsui Mining & Smelting Co., Ltd.
    • Masayuki Matsuyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Phosphor, LED light-emission element, and light source device
    • Patent number 9,394,478
    • Issue date Jul 19, 2016
    • Mitsui Mining & Smelting Co., Ltd.
    • Masaaki Inamura
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Sulfur-containing phosphor coated with ZnO compound
    • Patent number 9,312,454
    • Issue date Apr 12, 2016
    • Mitsui Mining & Smelting Co., Ltd.
    • Jun-ichi Itoh
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Light-emitting device
    • Patent number 9,166,119
    • Issue date Oct 20, 2015
    • Mitsui Mining & Smelting Co., Ltd.
    • Haruka Shimizu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Sulfur-containing phosphor coated with ZnO compound
    • Patent number 8,912,553
    • Issue date Dec 16, 2014
    • Mitsui Mining & Smelting Co., Ltd.
    • Jun-ichi Itoh
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

  • Information Patent Application

    NIOBIC ACID AQUEOUS SOLUTION
    • Publication number 20230045212
    • Publication date Feb 9, 2023
    • Mitsui Mining and Smelting Co., Ltd.
    • Syuhei HARA
    • C01 - INORGANIC CHEMISTRY
  • Information Patent Application

    POLISHING LIQUID AND METHOD FOR PRODUCING POLISHED ARTICLE
    • Publication number 20200332163
    • Publication date Oct 22, 2020
    • Mitsui Mining and Smelting Co., Ltd.
    • Ken MATSUO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    POLISHING LIQUID AND POLISHING METHOD
    • Publication number 20190367776
    • Publication date Dec 5, 2019
    • Mitsui Mining and Smelting Co., Ltd.
    • Ken MATSUO
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    POLISHING SLURRY AND POLISHING MATERIAL
    • Publication number 20190010359
    • Publication date Jan 10, 2019
    • Mitsui Mining and Smelting Co., Ltd.
    • Masayuki MATSUYAMA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Phosphor, LED Light-Emission Element, and Light Source Device
    • Publication number 20150075611
    • Publication date Mar 19, 2015
    • Mitsui Mining and Smelting Co., Ltd.
    • Masaaki Inamura
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    Red Phosphor and Light-Emitting Element
    • Publication number 20140196763
    • Publication date Jul 17, 2014
    • Mitsui Mining and Smelting Co., Ltd.
    • Asuka Sasakura
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    Light-Emitting Device
    • Publication number 20140021502
    • Publication date Jan 23, 2014
    • Mitsui Mining and Smelting Co., Ltd.
    • Haruka Shimizu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Sulfur-Containing Phosphor Coated with ZnO Compound
    • Publication number 20130256715
    • Publication date Oct 3, 2013
    • Mitsui Mining and Smelting Co., Ltd.
    • Jun-ichi Itoh
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...