| 1949 |
Established International Electric Co., Ltd., primarily engaged in manufacturing and sales of telecommunications equipment and high-frequency application devices |
| 1956 |
Received orders for germanium and silicon single crystal pulling equipment, initiating semiconductor manufacturing equipment business |
| 1961 |
Developed the world's first lifetime measurement device for silicon single crystals using high-frequency applications and a resistivity measurement device |
| 1961 |
International Electric Co., Ltd. listed on the Tokyo Stock Exchange (designated as a First Section stock in October of the same year) |
| 1963 |
Started research on impurity diffusion in semiconductor manufacturing equipment |
| 1964 |
Developed a diffusion furnace through research on impurity diffusion in semiconductor device manufacturing |
| 1970 |
Developed CVD equipment |
| 1971 |
Established Kokusai Electric Co., of America, a local subsidiary in Delaware, USA (now Kokusai Semiconductor Equipment Corporation) |
| 1977 |
Established Kokusai Electric Europe GmbH, a local subsidiary in Dusseldorf, Germany (now Kokusai Semiconductor Europe GmbH) |
| 1983 |
Developed a silicon epitaxial growth device (DC-7000) compatible with 150mm wafers |
| 1985 |
Launched the vertical CVD diffusion device 'VERTEX®' |
| 1987 |
Developed a vertical CVD device (VERTEX®-II) compatible with 150mm wafers |
| 1989 |
Established International Electric System Service Co., Ltd. (now Kokusai Electric Semiconductor Service Co., Ltd.) |
| 1989 |
Started operation of Toyama Factory (now Toyama Business Office) |
| 1989 |
Established a local subsidiary, Kook Je Electric Korea Co., Ltd., in Cheonan, South Korea (consolidated subsidiary) |
| 1989 |
Established Asia Pacific International Electric Co., Ltd. in Taiwan |
| 1989 |
Asia Pacific International Electric Co., Ltd. established Kokusai Electric Asia Pacific Shanghai Ltd. (currently Koy Semiconductor Equipment (Shanghai) Co., Ltd.) |
| 1989 |
Established HKE Holdings LLC (currently our company) in Marunouchi, Chiyoda-ku, Tokyo |
| 1989 |
Established Kokusai Semiconductor Singapore Pte. Ltd. |
| 2017-02-02 |
On February 2, 2017, KOKUSAI ELECTRIC Co., Ltd. was established. |
| 2017-02-02 |
KOKUSAI ELECTRIC Co., Ltd. was established. |
| 2018-03 |
Hitachi Kokusai Electric Co., Ltd. was delisted from the First Section of the Tokyo Stock Exchange. |
| 2018-05 |
HKE Holdings Co., Ltd. made Hitachi Kokusai Electric Co., Ltd. a subsidiary. |
| 2018-06 |
Hitachi Kokusai Electric Co., Ltd. carried out a company split, and the film formation process solution business was succeeded by HKE Holdings Co., Ltd. (currently our company), and the company name was changed to KOKUSAI ELECTRIC Co., Ltd. |
