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Overview and History of the Company

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    Overview

    Company Name Resonac Ceramics Corporation
    Establishment November 20, 1985
    President Naoya Takahashi
    Fiscal year end December
    Capital 460 Million Yen (As of January 4, 2024)
    Number of Issued Shares 9,200 Shares (As of January 4, 2024)
    Shareholder Resonac Co.,Ltd.
    Employees 339 (As of January 2024)
    Executive Officers
    (As of April 1, 2024) 
    Representative Director Naoya Takahashi (Part Time)
    Director Takayoshi Komiya (Part Time)
    Director Kazuhiro Kitayama (Part Time)
    Audit & Spervisory Board Member Ikuo Shigematsu (Part Time)
    Locations Head Office / Shiojiri Plant
    Address : 1 Soga, Shiojiri-shi, Nagano Prefecture 399-6461, Japan
    Employees : 139 (As of January 2024)
    Area : 300,000㎡

    Toyama Plant
    Address : 3-1 Nishinomiya-machi, Toyama-shi, Toyama Prefecture 931-8577, Japan
    Employees : 139 (As of January 2024)
    Area : 210,000㎡

    Yokohama Plant
    Address : 8 Ebisu-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture 221-8517, Japan
    Employees : 61 (As of January 2024)
    Area : about 140,000㎡ (Note 1)

    Note 1 : Site area of Resonac Yokohama office.
    Business Activities Production and sale of abrasives, refractory materials, ultra high pressure products, fine ceramic compacts, filler materials, titanium dioxide, and abrasives for glass.

    History of the Company

      Operation History Product History
    1932

    Established Shiojiri Plant, Nihon Iodine K.K.

    Head Office & Shiojiri Plant
    1933

    Established Nippon Alumina Works.

    Yokohama Plant

    Established Nichiman Aluminum Co., Ltd.

    Toyama Plant

    Production of alumina started.

    Yokohama Plant

    Production of silicon carbide (C/GC) started.

    Head Office & Shiojiri Plant

    Production of aluminum started.

    Toyama Plant
    1934

    Production of Morandam (A) started.

    Head Office & Shiojiri Plant
    1938

    Switched entirely to bauxite as the raw material for alumina.

    Yokohama Plant

    Production of fused alumina (WA) started.

    Head Office & Shiojiri Plant
    1939

    Established Showa Denko K.K.

    Head Office & Shiojiri PlantYokohama Plant
    1943

    Merged with Showa Denko K.K. and became the Toyama Plant of Showa Denko K.K.

    Toyama Plant
    1950

    Completion of Akamatsu Power Plant (hydroelectric).

    Head Office & Shiojiri Plant
    1958

    Commercialized aluminum hydroxide (H-W).

    Yokohama Plant
    1959

    Production of high carbon ferro-chromium started.

    Toyama Plant
    1969

    Production of high carbon ferronickel started.

    Toyama Plant
    1970

    Named aluminum hydroxide as “Higilite.”
    Note: “Aluminum Hydroxide Higilite” is a registered trademark of Resonac Corporation in South Korea, Thailand, Australia, China, the EU, the United Kingdom, Indonesia, Singapore, and Canada. 

    Yokohama Plant
    1978

    Production of cubic boron nitride abrasive grains (SBN) started started.

    Head Office & Shiojiri Plant
    1979

    Company name changed to Toyama Showa Denko K.K.

    Toyama Plant
    1982

    Production of high-purity alumina (UA) started.

    Yokohama Plant

    Production of thermal spray materials (PSP) started.

    Head Office & Shiojiri Plant
    1983

    Production of fused silica and sponge titanium started.

    Toyama Plant
    1985

    Company name changed to Toyama Showa K.K.

    Toyama Plant

    Production of cubic boron nitride sintered bodies (SBN K-TIP) started.

    Head Office & Shiojiri Plant
    1987

    Production of alumina beads (Alna Beads) started.

    Toyama Plant
    1988

    Company name changed to Showa Titanium Co., Ltd.

    Toyama Plant

    Production of high purity titanium dioxide started.

    Toyama Plant
    1990

    Production of rounded alumina (AS) started.

    Yokohama Plant
    1994

    Entrusted to produce air separation units.

    Toyama Plant
    2000

    Production of titanium oxide for photocatalysts (Jupiter NTB) started.

    Toyama Plant
    2003

    Established Lianyungang Zhaoling Abrasives Co., Ltd. in China.

    Head Office & Shiojiri Plant
    2007

    Entrusted to produce cerium oxide (SHOROX).

    Toyama Plant
    2014

    Established Showa Denko Ceramics Co., Ltd.

    Head Office & Shiojiri Plant

    Company name changed to Showa Denko Ceramics Co., Ltd.

    Merged with Tohoku Metal Chemical Co., Ltd.

    Toyama Plant

    Consolidated cerium oxide (SHOROX) production in Toyama.

    Toyama Plant
    2015

    Established Showa Denko Ceramics Co., Ltd. Yokohama Plant.

    Yokohama Plant
    2023

    Company name changed to Resonac Ceramics Corporation.

    Head Office & Shiojiri PlantToyama PlantYokohama Plant