History
Company Information

History

Oct. 1959The petrochemical sector of Maruzen Oil (renamed to Cosmo Energy Holdings) Co.,Ltd. is separated as an independent unit and established with a capital investment of ¥2.5 billion(100% share)by Maruzen Oil Co.,Ltd.
Feb. 1964Capital investments are received from Ube Industries Ltd. (renamed to UBE Corporation), Chisso (renamed to JNC Corporation), Denki Kagaku Kogyo K.K. (renamed to Denka Company Limited ), Nissan Chemical Industries,Ltd. and Nippon Soda Co.,Ltd.
Jun. 1964Commencing commercial operation of No.1 Ethylene production Unit
Apr. 1966Commencing commercial operation of No.2 Ethylene production Unit and the No.1 Aromatic Extraction Unit
Apr. 1969Commencing commercial operation of No.3 Ethylene production Unit and No.2 Aromatic Extraction Unit
Aug. 1969Establishment of Chiba Butadiene Industry Co., Ltd. as a joint venture for the production and the sale of butadiene
Apr. 1981Establishment of Nissan Maruzen Polyethylene Co.,Ltd. as a joint venture for the production and the sale of high-density polyethylene(Jan. 1991:renamed to Maruzen Polymer Co.,Ltd.)
Sep. 1982The petrochemical business, including Alcohol Ketone Production Unit, inherited from Maruzen Oil (renamed to Cosmo Energy Holdings) Co., Ltd.
Dec. 1984Acquisition of Goi Chemical Co.,Ltd. stock from Maruzen Oil (renamed to Cosmo Energy Holdings) Co.,Ltd.
Oct. 1985Establishment of Nisso Maruzen Chemical Co.,Ltd. as a joint venture for the production and the sale of ethylene oxide, ethylene glycol and other products
Mar. 1986Commencing commercial operation of Polyparavinylphenol Production Unit
Jul. 1986New York representative office is reorganized into Maruzen America Inc. established through 100% capital investment
Sep. 1987Commencing commercial operation of Multi Hydrogenation Unit and High-purity dicyclopentadiene Production Unit
Apr. 1989Commencing commercial operation of Benzene Production Unit
Apr. 1991Commencing commercial operation of No.2 Multi Hydrogenation Unit
Sep. 1991Establishment of Keiyo Ethylene Co.,Ltd. for the production and the sale of ethylene, propylene and other products
Jun. 1993Establishment of Keiyo Monomer Co.,Ltd. as a joint venture for the production and the sale of Vinyl chloride monomer
Dec. 1994Commencing commercial operation of No.4 Ethylene Production Unit (Keiyo Ethylene Co. Ltd.)
Aug. 1997Keiyo Polyethylene Co., Ltd. established as a joint venture with Chisso Petrochemical Corporation and Maruzen Polymer Co., Ltd.
Dec. 1997ISO (International Organization for Standardization) 9002 certified
Aug. 1998Commencing commercial operation of Vinyl Ether Production Unit
Nov. 1999ISO14001 certified
Oct. 2002Commencing commercial operation of MARUKA LYNCUR Production Unit
Oct. 2004Establishment of Ube Maruzen Polyethylene Co.,Ltd. as a joint venture for the production of Low-density polyethylene
Dec. 2004Head Office (Specialty Chemicals Dept.) and Research Center acquired ISO 9001 certification.
Apr. 2005Merger of Maruzen Polymer Co.,Ltd. and Maruzen Chemical Co.,Ltd. Establishment of CM Aroma Co.,Ltd. as a joint venture for the production and the sale of Mixed xylene
Dec. 2005Setting up CSR committee
Jun. 2008Revamp No.3 Ethylene Production Unit to enhance its international competitiveness
Jul. 2013Head Office relocated to 1-1, Irifune 2-chome, Chuo-ku, Tokyo
Mar. 2016Became a consolidated subsidiary of Cosmo Energy Holdings Co., Ltd.
Feb. 2018Chiba Arkon Production Limited established as a joint venture with Cosmo Energy Holdings Co., Ltd. and Arakawa Chemical Industries, Ltd.
Oct. 201960th anniversary of foundation
Dec. 2019Commencing commercial operation of No.2 Vinyl Ether Production Unit
Jul. 2020Renewal of large cracking furnace for No. 3 Ethylene Production Unit completed
May. 2022Commencing commercial operation of Propylene Distillation Unit