| 1983 |
Incorporation of JGI, Inc.
（With the partial transferal of personnel and facilities from geophysical headquarters of Japan Petroleum Exploration Co. Ltd.(JAPEX).） |
| 1984 |
Transferal of JAPEX's Computing/ Data Processing Departments to JGI
Beijing Office was opened |
| 1986 |
Transferal of JAPEX's Seismic Fields Operation Department to JGI |
| 1994 |
Head Office Moved to Higashi Shinagawa, Shinagawa-ku, Tokyo |
| 1995 |
Ranzan Research Center was opened |
| 1998 |
Head Office Moved to Otsuka, Bunkyo-ku, Tokyo |
| 2002 |
Sapporo, Akita and Nagaoka Offices were opened |
| 2003 |
ISO9001:2000 Certificate was issued |
