［As of the end of September, 2016］
| 1924 | Takino Rubber Industry Co. established. Bicycle tire factory built in Mukojima, Tokyo. |
| 1944 | Kokoku Rubber Industry Co., Ltd. established by the merger of 5 rubber companies with Takino Rubber at the center. |
| 1949 | Kambara Factory established in Shizuoka Prefecture, starting production of industrial rubber components. |
| 1950 | Sales office established in Okachimachi, Tokyo. |
| 1953 | Akabane Factory established in Kita-ku, Tokyo. |
| 1957 | Emphasis shifted from bicycle tires to industrial components. R&D Center established within Akabane Factory. |
| 1961 | Kambara Factory expanded. (Currently Shizuoka Rubber) Started extruding hoses at Mukojima Factory. |
| 1963 | Headquarters moved from Sumida-ku to Okachimachi, Taito-ku. |
| 1965 | Ohama Factory established in Shizuoka Prefecture. |
| 1966 | Started the move towards high function component manufacturing. |
| 1968 | Utsunomiya Factory established in Tochigi Prefecture. |
| 1969 | Tire tube production discontinued. |
| 1970 | Full-scale production of medical components started at Ohama Factory. |
| 1972 | Diaphragm production started at Akabane Factory. |
| 1974 | Osaka Sales Office was established in Yodogawa-ku, Osaka. |
| 1976 | Headquarters moved to Kojimachi, Chiyoda-ku. |
| 1977 | Production of "Electro-conductive Rubber Material" started. |
| 1979 | R&D Center became independent with relocation to Inamachi, Saitama. |
| 1980 | Distribution Center established in Urawa, Saitama. New factory established at current location in Kambara. EPDM keyboard contact "TF Rubber" material production started at Kambara. Electro-conductive Plastic "DEP" material developed at R&D Center. |
| 1983 | Los Angeles Sales Office established. |
| 1985 | Chicago Sales Office established. R&D Center became an independent corporation "Kokoku Rubber Technologies Co., Ltd." Electronic Device Research Lab established in Yoga, Tokyo, developing pressure-sensitive electro-conductive rubber material. Nagoya Sales Office established. |
| 1986 | Kokoku Rubber Inc. established in USA. |
| 1988 | Kentucky Factory established in Richmond, KY. |
| 1989 | Eno Scientific Foundation established under the auspices of Japanese Ministry of Education. First OEM graphic computer sold under My First Sony brand name. |
| 1990 | Hard drive components production started. |
| 1991 | Rechargeable battery safety valve production started at Ohama Factory. |
| 1992 | Name changed to Kokoku Intech Co., Ltd. |
| 1994 | Thai Kokoku Rubber Co., Ltd. established in Thailand. |
| 1995 | Singapore Branch established. Ayutthaya Factory established in Thailand. |
| 1996 | Photo copier transfer belt production started at Kambara Factory. |
| 1998 | Tochigi Rubber Co., Ltd. established by the acquisition of Takino Rubber. |
| 1999 | Shizuoka Rubber Co., Ltd. established by spin-off from Kambara Factory. |
| 2000 | Color laser printer intermediate transfer belt production started at Ohama Factory. |
| 2001 | Kokoku (Shanghai) Precision Rubber Co., Ltd. established in China. |
| 2005 | Ayutthaya No. 2 Factory - dedicated for extrusion process - established in Thailand. |
| 2007 | Bangkok Sales Office established in Thailand. New Delhi Branch established in India. |
| 2009 | Kokoku Intech India Pvt.Ltd. established in India. |
| 2011 | Neemrana Factory established in India. |
| 2013 | PT. Jakarta Kokoku Intech established in Indonesia. |
| 2016 | Fukuoka Sales Office established. Nong Khae Factory established in Thailand. |
