Cosmo Oil Company

Cosmo Oil Co., Ltd.
Native name
Public KK
Traded as TYO: 5007
Industry Oil and gas
Founded merger of Maruzen Petroleum and Daikyo Petroleum
(April 1, 1986 (1986-04-01))
Headquarters Shibaura, Minato, Tokyo, Japan
Key people
Yaichi Kimura
Keizo Morikawa
(President and CEO)
Services Filling stations

Increase JPY 3,537 billion (FY 2013)

(US$ 34.3 billion) (FY 2013)

Increase JPY 4.34 billion (FY 2013)

(US$ 42.1 million) (FY 2013)
Number of employees
1,837 (consolidated, as of March 31,2014)
Website Official website
Footnotes / references

Cosmo Oil Company, Limited (コスモ石油株式会社 Kosumo Sekiyu Kabushiki-gaisha) is a Japanese petrochemical company. It is Japan's third-biggest refiner by sales after JX Holdings and Idemitsu Kosan.[2]


Cosmo traces its corporate roots to Maruzen Petroleum (丸善石油株式会社), a company established in 1931, although the oil business operated by Maruzen was originally established by Zenzo Matsumura in Kobe in 1907.

Cosmo Oil Company was formed on April 1, 1986, through the merger of Maruzen Petroleum and Daikyo Petroleum, a group of oil businesses based in Niigata Prefecture which merged in 1939.

A major fire occurred at the Cosmo refinery in Ichihara as a result of the 2011 Tōhoku earthquake.[3][4][5] It was extinguished after ten days, killing or injuring six people, and destroying storage tanks[6]

In February 2015, the company said it will reorganize itself under a holding company to boost profitability.[2] Also in 2015, in March, Cosmo Oil formed an LPG joint-venture by merging its LPG business with three other company's LPG units. The new company, named Gyxis Corporation will start effective operations on April 1, 2015.[7] Along Cosmo the other three shareholding companies are Showa Shell Sekiyu, TonenGeneral Sekiyu, and Sumitomo Corporation, all with 25% of the ownership.[8]


Cosmo operates three refineries, all of which are located in Japan:[9]

In August 2012, the company announced that it will close its Sakaide plant, in southwest Japan.[10] The refinery, which was closed and turned into an oil terminal in July 2013,[9] was a former Asia Oil refinery with a capacity of 120,000 barrels per day (19,000 m3/d).

Explosion and fire at Cosmo refinery in Ichihara, Chiba, following the 2011 Tōhoku earthquake 
A Cosmo service station in Osaka 
A Cosmo LPG truck 
An aerial view north-west of the Port of Chiba (Cosmo Chiba refinery seen left of the river mouth) 

See also


  1. "Company Profile". Cosmo Oil. Retrieved 28 March 2015.
  2. 1 2 Tsukimori, Osamu (5 February 2015). Sheldrick, Aaron; Nair, Sunil, eds. "Japan's Cosmo Oil to set up holding firm in Oct". Reuters Africa. Thomson Reuters. Retrieved 28 March 2015.
  3. "Japan earthquake causes oil refinery inferno". The Daily Telegraph. London: Telegraph Media Group. 11 March 2011. Retrieved 12 March 2011.
  4. "Natural gas storage tanks burn at Cosmo oil refinery in Ichihara city". Reuters AlertNet. Thomson Reuters. 11 March 2011. Retrieved 12 March 2011.
  5. Watkins, Eric (11 March 2011). "After 8.9 quake, explosion hits pchem complex in Japan". Oil & Gas Journal. Los Angeles: PennWell Corporation. Retrieved 28 March 2015.
  6. "LPG Tanks Fire Extinguished at Chiba Refinery (5th Update)". Cosmo Oil. 21 March 2011. Retrieved 28 March 2015.
  7. "Japanese Companies Pool LPG Sectors". World Maritime News. 12 March 2015. Retrieved 28 March 2015.
  8. Crystal Chan (12 March 2015). "Four Japanese companies form an LPG importer". IHS Maritime 360. IHS Inc. Retrieved 28 March 2015.
  9. 1 2 "Japan's Cosmo Oil to permanently shut Sakaide refinery in July '13". ICIS. Reed Business Information. 28 August 2012. Retrieved 28 March 2015.
  10. Tsukimori, Osamu (28 August 2012). Watson, Michael, ed. "Japan's Cosmo to close Sakaide refinery in July 2013". Reuters. Thomson Reuters. Retrieved 28 March 2015.
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