| 1951 |
- Founded with 100 million yen in capital
- Established head office at 1-12 Nihonbashi Kayaba-cho, Chuo-ku, Tokyo, Japan
- Began rental business (with 13 pieces of equipment, including bulldozers)
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| 1952 |
- Registered with Minister of Construction, in accordance with construction law No. 58 (B)
- Opened Oji parking lot in Kita-ku, Tokyo (Shimo-Jujo)
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| 1957 |
- Purchased the first ripper to be used in Japan, from the United States, and made them an established part of construction work in Kurihama
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| 1960 |
- Increased capital to 400 million yen
|
| 1961 |
- Listed in the second section of the Tokyo Stock Exchange
|
| 1962 |
- Created the Construction Division
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| 1963 |
- Registered with the Governor of Tokyo as first-class architect office No. 4070
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| 1964 |
- Moved Head Office and Tokyo Branch to new building (2-15 Akasaka Omote-cho, Minato-ku, Tokyo, Japan).
- Listed in the first section of the Tokyo Stock Exchange
|
| 1965 |
- Completed new parking lot in the Nakatsu industrial park in Kanagawa.
- Moved the construction office/Tokyo plant from Oji
|
| 1967 |
- Increased capital to 1.6 billion yen
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| 1968 |
- Succeeded in developing and demonstrating the world's first underwater bulldozer
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| 1970 |
- Listed in the first section of the Osaka Stock Exchange
- Increased capital to 2.65 billion yen
|
| 1973 |
- Acquired special construction business license (Special 48) No. 1000, in accordance with revision of the Construction Business Act
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| 1974 |
- Received certificate No. 1756 from Minister of Construction, in accordance with the Real Estate Brokerage Act
|
| 1980 |
- Changed name of the Singapore Sub-branch to Southeast Asia Branch (now Singapore Branch)
|
| 1981 |
- 30th anniversary of founding
- Primary CI activities rolled out
- The industry's first mascot character, "Kokudo-kun", is created
- Technical Research Center (now Technology Center) opened
|
| 1982 |
- Kuala Lumpur Sub-branch renamed Kuala Lumpur Branch
- Jakarta Sub-branch renamed Jakarta Branch
|
| 1990 |
- New research laboratory completed in Atsugi
- East Asia Branch opened
|
| 1992 |
- Completed new headquarters (Akasaka MK Bldg.)
|
| 1993 |
- Chosen as a "Global Environmentally Responsible Company" at the second annual Global Environment Awards, sponsored by the Fuji Sankei Group
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| 1994 |
- Signed memorandum for rainforest restoration project in Terengganu, Malaysia
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| 1995 |
- Established the South Hyogo Prefecture Earthquake Emergency Operations Committee, in response to the Great Hanshin-Awaji Earthquake
- Singapore Branch acquired ISO9002 certification
|
| 1996 |
- Tokyo Branch acquired ISO9001 certification
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| 1998 |
- Nagoya Branch acquired ISO14001 certification
|
| 1999 |
- Resolved to commence corporate reorganization proceedings (concluded in 2003)
- Delisted from Tokyo and Osaka stock exchanges
|
| 2001 |
- Established Japan Adox co., Ltd. (now a consolidated subsidiary handling the manufacture, sale, and application of structural adhesives)
- Capital reduction and increase to new capital of 5 billion yen
|
| 2005 |
- Company-wide acquisition of integrated ISO9001 and ISO14001 certifications
|
| 2007 |
- Established ANION Co., Ltd. (now a consolidated subsidiary handling manufacture and sale of high-performance water treatment agents)
- Renamed Taiwan office as Taiwan Branch
|
| 2009 |
- Kokudo Koki Co., Ltd. merged with Kokudo Kaihatsu Industry Co., Ltd. (now a consolidated subsidiary)
|
| 2016 |
- Acquired Japan's first general vibration-free floor rating for our JDC Vibration-free Floor System
- Established Fukushima Ecocrete Co., Ltd. (now a consolidated subsidiary handling the manufacture and sale of roadbed materials utilizing coal ash)
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| 2019 |
- Listed shares on the First Section of the Tokyo Stock Exchange
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