Our History

Since 1955, Toho Acetylene has woven a story of resilience, growth, and commitment to excellence.
From our modest beginnings to a pivotal presence in the Gas Industry,
each chapter reflects our dedication to shaping a future filled with possibilities.

• 1955 March

  “Toho Acetylene Co., Ltd” is established in Sakata, Yamagata. Initial capital is 3 million yen.

• 1957 December

  Koriyama Plant is established in Koriyama-shi, Fukushima (Currently, Koriyama Sales Office).

• 1958 November

  Head office relocated from Sakata-shi, Yamagata to Chuo-ku, Tokyo.

• 1959 April

  Sendai plant is established in Tagajo-shi, Miyagi (Currently, Sendai Branch).

• 1961 September

  Our Company is listed on the Second Section of the Tokyo Stock Exchange
  (Delisted in October 1963 due to merger, re-listed in January 1964).

• November

  Hachinohe Plant is established in Hachinohe-shi, Aomori (Currently, Hachinohe Branch).

• 1962 October

  Niigata Office is established in Kurosaki-machi, Nishikanbara-gun (Currently, Niigata-shi),
  Niigata (Currently, Niigata Sales Office).

• 1964 November

  Akita Plant is established in Akit-shi, Akita (Currently, Akita and Sakata Sales Offices).

• 1966 June

  Liquefied oxygen and nitrogen production facilities were established at Sendai Plant (Unit 1)

• 1970 May

  Chiba Sales Office is established in Shiroi-machi, Inba-gun
  (Currently, Shiroi-shi), Chiba (Currently, Kanto Sales Office).

• June

  Renewal of liquefied oxygen and nitrogen production facilities at Sendai Plant (Unit 2)

• November

  Sapporo Office is established in Sapporo-shi, Hokkaido (Currently, Sapporo Sales Office).

• 1975 April

  Sakata Suiso Plant is established and hydrogen production has begins (Currently, Toho Sakata Suiso Co., Ltd.).

• 1991 October

  Renewal of liquefied oxygen, nitrogen,
  and argon production facilities at Sendai Plant (Unit 3) (Currently, Tagajo Plant).

• 2000 June

  Kitanihon Acetylene Co., Ltd. is established in Hachinohe-shi, Aomori.

• October

  Sendai Plant (Currently, Tagajo Plant) has received certificate ISO 9001.

• 2001 January

  Hachinohe Office relocated to Kita Inter Industrial Park, Hachinohe-shi.

• 2002 January

  Sakata Suiso Plant has received certificate ISO 9001.

• 2003 June

  Sakata Office is established in Sakata-shi, Yamagata (Currently, Akita and Sakata Sales Offices).

• 2004 November

  Head office relocated to 2-4-10 Higashi-Nihonbashi, Chuo-ku, Tokyo

• 2005 January

  Sendai Plant (Currently, Tagajo Plant) (Affiliated organization: Toho Sakata Suiso)
  has received the environmental certificate ISO14001.

• 2008 April

  Sales Headquarters relocated to Aoba-ku, Sendai-shi, Miyagi.

• 2012 December

  New building constructed in Tagajo-shi, Miyagi,
  and head office functions (Administration and sales headquarters) moved to the new building.
  Head office relocated to 2-16-13 Nihonbashi, Chuo-ku, Tokyo.

• 2014 June

  Head office relocated to 2-3-32 Sakae, Tagajo, Miyagi (Relocation to newly registered location)

• 2017 April

  Osaka Office is established in Chuo-ku, Osaka-shi, Osaka (Currently, Osaka Branch).

• June

  Our company is listed on the First Section of the Tokyo Stock Exchange.

• 2022 April

  Listing changed to the Prime Market in accordance with the reorganization of the Tokyo Stock Exchange.

• July

  Tokyo Branch is established in Minato-ku, Tokyo.
  Tokyo Office relocated to the same location of Tokyo Branch.

• 2024 Jan

  Moved Osaka Brach to Kita-ku, Osaka-shi, Osaka.

To Be Continued