| April | 1949 | The capacitor division of Anritsu Corporation spun off to establish Annaka Corporation. |
|---|---|---|
| October | 1962 | Annaka Denki Co., Ltd. merged with Annaka Seiki Co., Ltd. The corporate name was changed to Annaka Denki Seiki Co., Ltd. |
| March | 1963 | Annaka Denki Seiki Corporation was listed at the Tokyo Stock Exchange, Second Section. |
| January | 1965 | Hitachi capacitors Co., Ltd. was established. |
| April | 1965 | Hitachi capacitors Co., Ltd. took over the operations of Kanagawa Works of Hitachi Chemical Co., Ltd. |
| October | 1965 | Hitachi capacitors Co., Ltd. merged with Annaka Denki Seiki Co., Ltd. as a surviving company. The corporate name was changed to Hitachi capacitors |
| August | 1979 | Took over the operations of Ninomiya Kogyo Co., Ltd. |
| July | 1984 | The head office was moved to Nishi-Gotanda, Shinagawa-Ku, Tokyo. |
| August | 1989 | Took over the operations of Miharu Manufacturing Co., Ltd. |
| October | 1990 | Merged with Meiko Meguro Kogyo Co., Ltd. and Sanki Kogyo Co., Ltd. The corporate name was changed to Hitachi AIC Inc. |
| September | 2000 | Listed shares on the First Section of the Tokyo Stock Exchange |
| July | 2001 | Shares delisted from the Stock Exchange |
| August | 2001 | Through the exchange of shares, Hitachi AIC Inc. became a wholly owned subsidiary of Hitachi Chemical Co., Ltd. |
| June | 2003 | Changed the corporate structure to the "Company with a Committee System" |
| September | 2006 | Changing to a corporation where the auditor is stationed. |
| April | 2008 | Merged with Hitachi Chemical Electronics Company, Ltd., and the head office was moved to the present address (Moka, Tochigi). |
| October | 2009 | Aluminum Electrolystic Capacitors business and Metalized Film products and other business had been transferred to Shinmachi Condensor Company, Ltd.. All businesses of Shinmachi Condensors Company, Ltd. had been transferred to Shinkobe Electric Machinery Co., Ltd.. The corporate name was changed to Hitachi Chemical Electronicd Co., Ltd.. |
