Corporate History

1950s

1953 Toho Titanium Co., Ltd. was jointly established by Nippon Mining Co., Ltd. (currently JX Nippon Mining & Metals Corporation), a major copper smelting company, Kojiro Ishizuka, the founder of Osaka Special Steel Manufacturing Co. (currently Osaka Titanium Technologies Co., Ltd.), and his son Hiroshi Ishizuka, both of whom were engineers who excelled in titanium smelting, and Daiichi Bussan Corporation (currently Mitsui & Co., Ltd.), which focused on the potential of titanium.
1954 Constructed a plant in Chigasaki City, Kanagawa Prefecture.
Production of titanium sponge at the 1st plant (facility capacity: 240 tons/year) started.
Exporting to the United States began.
1955 Went public with over-the-counter transactions on the Tokyo Stock Exchange.
1956 Titanium sponge production capacity increased to 1,800 tons/year.
1950s 1950s

1960s

1960 The 1st melting plant started production of titanium ingots (facility capacity: 120 tons/year).
1961 Listed shares on the Second Section of the Tokyo Stock Exchange.
1965 Titanium sponge production capacity increased to 2,400 tons/year.
Constructed a facility for manufacturing titanium trichloride catalysts (facility capacity: 36 tons/year).
1966 The titanium sponge received JIS certification.
1968 Titanium ingot production capacity increased to 1,200 tons/year.
1960s

1970s

1970 Started commercial production of high-purity titanium oxide.
1971 Titanium sponge production capacity increased to 5,400 tons/year.
1977 Completed the exporting of a titanium trichloride catalyst plant to China.
1970s

1980s

1980 Titanium sponge production capacity increased to 12,000 tons/year.
1985 Titanium ingot production capacity increased to 7,800 tons/year.
1986 Constructed a high-efficiency THC catalysts manufacturing facility.
1987 Established Toho Technical Service Co., Ltd.
1989 High-purity titanium oxide production capacity increased to 2,040 tons/year.
1980s

1990s

1990 Acquired Sankyo Diamond Industrial Co., Ltd.
Concluded a convertible bond purchase agreement with TIMET in the United States.
1993 High-efficiency THC catalyst production capacity increased to 85 tons/year.
1996 ISO 9002 certified (manufacturing and sales of catalysts for propylene polymerization).
1997 High-purity titanium oxide production capacity increased to 2,160 tons/year.
1998 ISO 9002 certification range expanded (titanium tetrachloride, titanium sponge, titanium ingot, high-purity titanium oxide, etc.).
ISO 14001 certified (all departments of Chigasaki Plant).
Completed an EB ingot manufacturing facility (Hitachi Plant) (facility capacity: 2,640 tons/year).
Established Toho Catalyst Kurobe Co., Ltd.
1999 ISO 9001 certification range expanded (design, development, manufacturing and sale of catalysts for propylene polymerization, titanium tetrachloride, titanium sponge, high-purity titanium, titanium ingot, high-purity titanium oxide, titanium powder, and calcination powder).
Constructed an ultra-fine nickel powder manufacturing facility (facility capacity: 24 tons/year).
1990s

2000s

2000 ISO 9001 certification range expanded (design, development, manufacturing and sale of nickel powder).
Toho Catalyst Kurobe Co., Ltd. changed its name to Toho Catalyst Co., Ltd. (Catalysts Business transferred to Toho Catalyst).
2003 Titanium sponge production capacity increased to 13,000 tons/year.
Obtained JIS Q 9100 certification (design, development, manufacturing and sale of titanium sponge for aircraft).
2005 Titanium sponge production capacity increased to 15,000 tons/year.
Sold Sankyo Diamond Industrial Co., Ltd.
2006 Listed on the First Section of the Tokyo Stock Exchange.
2007 Created a corporate brand logo.
Titanium sponge production capacity increased to 16,000 tons/year. Corporate brand logo
2008 Merged with Toho Catalyst Co., Ltd.
Established Yahata Plant (EB ingot manufacturing) (facility capacity: 10,000 tons/year).
Ingot production capacity reached 19,000 tons/year.
2009 Established Toho Titanium America Co., Ltd.
Established Toho Material Co., Ltd. (a joint venture company in which Nakashima Sangyo Co., Ltd. owns 20%, Morimura Bros., Inc. 10%, and our company 70%).
Established Toho Titanium Europe Co., Ltd.
2000s Corporate brand logo

2010s

2010 Titanium sponge production capacity increased to 26,400 tons/year.
Wakamatsu Titanium Sponge Plant started commercial operation.
2011 Started the mass production of the direct-cast titanium slab (DC Slab®).
2012 Titanium sponge production capacity increased to 28,800 tons/year.
Expanded the production capacity of the Wakamatsu Titanium Sponge Plant.
2013 Acquired aircraft certification for Wakamatsu Plant’s titanium sponge.
Titanium sponge production capacity increased to 25,200 tons/year (an efficient production system was established in the Chigasaki Plant).
2014 Established the second EB melting furnace at the Yahata Plant.
Invested in Nippon Steel & Sumikin Naoetsu Titanium Co., Ltd. (currently Nippon Steel Naoetsu Titanium Co., Ltd.).
(After our investment, Nippon Steel & Sumitomo Metal Corporation (currently Nippon Steel Corporation) owns 66% and our company 34%).
2016 Established a joint venture company named Advanced Metal Industries Cluster and Toho Titanium Metal Company Limited (Advanced Metal Industries Cluster Company Limited invested in 65% and Toho Titanium 35%) in the Kingdom of Saudi Arabia.
2017 Completed the construction of a titanium sponge manufacturing plant in the Kingdom of Saudi Arabia.
2019 Started the operation of the titanium sponge Joint Venture manufacturing plant in the Kingdom of Saudi Arabia.
2010s

2020s

2020 Established TOHO WORLD Corporation.
Relocated the headquarters to Yokohama City, Kanagawa Prefecture.
2021 Completed the new Wakamatsu Plant for nickel powder (4th plant).
2022 Designated for Prime Market, Tokyo Stock Exchange.
2020s

This website uses cookies for maintaining and improving performance. Please click below “Agree” button by continuing to visit this site.
＞ Learn more