| 1922 | Mr.Chunosuke Kokubun late president, started manufacture of new design braiding machine. |
|---|---|
| 1936 | Partnership of Kokubun Iron Works organized. |
| 1949 | Mr. C.Kokubun engaged in technical training in India as consulting engineer invited by Indian Government. |
| 1958 | Reorganized in Kokubun Iron Works Co., Ltd. |
| 1959-1967 | Appointed by Ministry of International Trade and Industry of Japan, as high contribution of export company. |
| 1964 | Capital increased 50m. Yen. |
| 1970 | Mr. Shusuke Kokubun as president. |
| 1975 | Sales of rotary braider started as Japanese sole agent for Wardwell Braiding Machine Co., U.S.A. |
| 1981 | Denka Kogyo Co,. Ltd., subsidiary, started in Iwata City as anodizing processor. |
| 1990 | Capital increased 70m. Yen. joined with Tokyo Small Business Investment Co., Ltd. |
| 1991 | Renamed to Kokubun Limited. |
| 1998 | ISO9001 Certified |
| 2001 | The Head Office&Factory is moved. |
| 2002 | Mr. Shigenori Kokubun as president. |