| Year 1968 | Established Kuken Co., Ltd. with 10 Million JP Yen paid-up capital. |
Head office building after extension work(Air view on year 1991).
Our No-plant(Air view on year 1991).
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| Year 1969 | Set up Nagoya branch office. |
| Year 1970 | New building at present place. |
| Year 1971 | Set up Tokyo and Sapporo branch offices. |
| Year 1974 | Set up Sendai branch office. |
| Year 1975 | Set up Hiroshima branch office. |
| Year 1977 | Accepted investment from Osaka Smaller Enterprises Investment Company. |
| Year 1978 | Made extension to head office building. |
| Year 1981 | Released impact wrench with D-type clutch system which own designed. |
| Year 1982 | FC wrench system was awarded by Komatsu Ltd. |
| Year 1985 | Released impact wrench with N-type clutch system which own developed. |
| Year 1987 | Started on-line communication between Osaka and Tokyo. |
| Year 1991 | New construction of No-plant. |
| Year 1996 | Set up LAN communication between head office and No-plant.Set up Kuken web-site. |
| Year 2000 | Start running new integrated logistics system with branch offices and logistics center. |
| Year 2001 | Acquisition of ISO9001(Version 1994). |
| Year 2002 | Made the transition to direct delivery system from logistics center to customer. |
| Year 2003 | Change communication line from frame reply to internet VPN.Acquisition of ISO9001 Certification(version 2000).New logistics system received a prize of Best IT 100 in Kansai region. |
