Diamond Gas Operation


About Us

Company Info
Name : Diamond Gas Operation Co., Ltd. (DGO)
Address : Mitsubishi Shoji Building, 3-1, Marunouchi, 2-chome Chiyoda-ku, Tokyo 100-0005, Japan
Chairman of the Board : Jun Nishizawa
President & CEO : Tomoyoshi Koizumi
Capitalization : 10 million yen (100% funded by Mitsubishi Corporation)
Organization Chart
Img : Organization Chart
History
Apr,1990 Established as a 100% subsidiary of Mitsubishi Corporation
(Paid-in capital: 50 million yen)
 
Aug,1992 Publication of DGR No.100 img:DGR No.100
Aug,1994 Publication of DGR No.200 img:DGR No.200
Oct,1994 Relocation of office from Kioicho Building to Shinjuku Park Tower Building  
Sep,1996 Publication of DGR No.300 img:DGR No.300
Sep,1998 Publication of DGR No.400 img:DGR No.400
May,2000 Paid-in capital is reduced from 50 million to 10 million yen  
Oct,2000 Publication of DGR No.500 img:DGR No.500
Oct,2002 Publication of DGR No.600 img:DGR No.700
Oct,2004 Establishment of website (DGOWEB) img:website (DGOWEB)
Nov,2004 Publication of DGR No.700 img:DGR No.700
Dec,2006 Publication of DGR No. 800 img:DGR No. 800
Apr,2007 Relocation of office from Shinjuku Park Tower Building to Marunouchi Chuo Building  
Aug,2007 Renewal of website (DGOWEB) img:new website (DGOWEB)
Jan,2009 Publication of DGR No. 900 img:DGR No. 900
Aug,2009 Relocation of office from Marunouchi Chuo Building to Marunouchi Park Building  
Mar,2011 Publication of DGR No. 1000 img:DGR No. 1000
Mar,2013 Publication of DGR No. 1100 img:DGR No.1100
Sep,2013 Relocation of office from Marunouchi Park Building to Mitsubishi Shoji Building  
Jul,2015 Publication of Company's 25th anniversary issue (DGR No. 1207-1211)