Ishikawajima-Harima Heavy Industries, Co., Ltd. (currently IHI Corporation) established wholly owned Daini Seican Koji Co., Ltd with 20 million yen capital.
Capital increased to 60 million yen.
Daigo Koji Co., Ltd and Dairoku Koji Co., Ltd merged and renamed Ishikawajima Plant Construction Co., Ltd.
Capital increased to 80 million yen.
Opened Sunamachi Works in Koto Ward, Tokyo.
Capital increased to 170 million yen.
Opened Aioi Branch Office in Aioi City, Hyogo Prefecture (currently Aioi Works).
Capital increased to 250 million yen.
Opened Fukushima Works in Futaba-gun, Fukushima Prefecture.
Opened Aichi Works in Chita City, Aichi Prefecture.
Three companies merged: Ishikawajima Plant Construction Co., Ltd. (IPC)
Ishikawajima Machine Steel Engineering Co., Ltd. (IIK)
and IHI Plantec Co., Ltd. (ITC).
Capital increased to 500 million yen.
Registered as first-class architect office.
Head office relocated to Toyosu, Koto Ward.
Company name changed from Ishikawajima Plant Construction Co., Ltd. to IHI Plant Construction Co., Ltd.(IPC)
Newly established Renewable Energy Department as a new business.
Established Tatsuno Solar Power Plant in Tatsuno City, Hyogo Prefecture.
Established Aioi Sakata Solar Power Plant in Aioi City, Hyogo Prefecture.
Established Tatsuno Ikariiwa Solar Power Plant in Tatsuno City, Hyogo Prefecture.
Established Nagano Asahi Mura Solar Power Plant in Higashichikuma-gun, Nagano Prefecture.
Established Tatsuno Ikariiwa No.2 Solar Power Plant in Tatsuno City, Hyogo Prefecture.
Three companies merged :
IHI Plant Construction Co.,Ltd.(IPC)
IHI Plant Engineering Corporation(IPEC)
and IHI Corporation Process Plants Business Unit.
Company name changed to IHI Plant Services Corporation(IPC)
Relocation of Sunamachi Works to Isogo, Yokohama City (change of name to Yokohama Works)