Brief History

1947
  • Mitsubishi Metal Mining Co., Ltd. (now, Mitsubishi Materials Corporation) started to manufacture rock tools.Rock Tools
  • Mitsubishi Metal Mining Co., Ltd.Mitsubishi Metal Mining Co., Ltd.
1958
  • Ote Kosan CO., Ltd. was established as the subsidiary company of Mitsubishi Metal Mining Co., Ltd. .
1960
  • Shinagawa plant was established and started to manufacture cemented carbide materials.Carbide Materials
1961 Niigata plant was established and started to manufacture sintered products.
1973
  • Mitsubishi Metal Mining Co., Ltd. (now, Mitsubishi Materials Corporation) started to manufacture wear resistant tools.Wear Resistant Tools
  • WEAR RESISTANT TOOLS Catalogue (From Left1985, 1997, 2001)WEAR RESISTANT TOOLS Catalogue (From Left1985, 1997, 2001)
  • WEAR RESISTANT TOOLS in 1985WEAR RESISTANT TOOLS in 1985
1981
  • Gifu plant of OTE Kosan CO., Ltd.(now, MMC RYOTEC Corporation) was established and started to manufacture rock tools and wear resistant tools, etc.Rock ToolsWear Resistant Tools
1988
  • Shinagawa plant of OTE Kosan CO., Ltd. moved to Ibaraki prefecture.Carbide Materials
1990
  • The name of the company was changed from of OTE Kosan CO., Ltd. to OTE Technological Engineering Corporation
  • OTE Technological Engineering Corporation, Gifu PlantOTE Technological Engineering Corporation, Gifu Plant
1991
  • PMC (Precision Mold Center) was established in Niigata and started to manufacture precision molds and tools.
1994
  • Techno OTE Kako Co., Ltd. (Capital : 50 million JPY) was established and Moriya production department was organized at Ibaraki plant to manufacture cutting tool holders.
1996
  • The capital of Techno OTE Kako Co., Ltd. was increased by 60 million JPY by Mitsubishi Materials’ capital participation.
1997
  • Techno OTE Kako CO., Ltd. changed its company name to RYOTEC CO., Ltd.
  • Akenobe Seiko Company Ltd. in Hyogo prefecture was acquired by RYOTEC CO., Ltd.
  • OTEC (THAILAND) CO., Ltd. was established to manufacture rock tools.Rock Tools
  • OTEC(THAILAND) 2005-2007OTEC(THAILAND) 2005-2007
  • OTEC(THAILAND) as of todayOTEC(THAILAND) as of today
1998
  • Capital of RYOTEC CO., Ltd. was increased by 90 million JPY and the total capital became 200 million JPY.
  • OTEC (THAILAND) started to manufacture rock tools.Rock Tools
1999
  • Niigata plant changed its name to Niigata office.
  • Moriya production department of Ibaraki plant was separated as Moriya plant.
  • Ibaraki plant obtained the ISO14001 certification.
2000
  • Niigata office was transferred to PM Techno CO., Ltd..
  • The manufacturing departments of wear resistant tools and rock tools were transferred from Mitsubishi Materials Corporation to RYOTEC Co.,Ltd.Rock ToolsWear Resistant Tools
  • Wear resistant tools, rock tools and Gifu plant of RYOTEC Co.,Ltd. obtained ISO14001 certification.Rock ToolsWear Resistant Tools
2001
  • Gifu plant of Ryotec Co.,Ltd. changed its name to carbide manufacturing plant.Carbide Materials
  • Wear resistant tools and Rock tools plant won the excellence TPM (Total Productive Maintenance) award.Rock ToolsWear Resistant Tools
2002
  • Moriya plant was transferred to MMCTOOLING Corporation.
  • Hiroshima Plant was established.
  • Carbide manufacturing plant changed its name to Ikeda plant.Carbide Materials
  • Wear resistant tools plant changed its name to Wear resistant tools division.Wear Resistant Tools
  • Rock tools plant changed its name to Rock tools division.Rock Tools
2003
  • OTEC (THAILAND) obtained the ISO9001 certification.Rock Tools
  • Tokyo head office was relocated to Gifu Prefecture.
  • Carbide manufacturing department of Ibaraki plant was transferred to MMC Hard Materials CO., Ltd.Carbide Materials
  • MMC Hard Materials CorporationMMC Hard Materials Corporation
2005
  • Wear resistant tools and rock tools division obtained the ISO9001 certification.Rock ToolsWear Resistant Tools
2007
  • Merges Akenobe Seiko Company into RYOTEC Co.Ltd. and established as Akenobe plant.
2009
  • OTEC(THAILAND) was relocated to expand production capacity.Rock Tools
2011
  • RYOTEC CO., Ltd. and MMC Hard Materials CO., Ltd. merge to form MMC RYOTEC Corporation.
2018
  • Marketing & Development Division was reorganized to Research & Development Division.
  • Quality Assurance Division was established.
2020
  • Business Administration Division was established.
2021
  • Engineered Carbide Products Sales Department of Mitsubishi Materials Corporation was transferred to MMC RYOTEC Corporation as of April 1st.Rock ToolsWear Resistant ToolsCarbide Materials
  • Plant & Equipment Engineering Division ,Safety & Environment Control Department and Compliance & Governance Development Department were established from the administration division.