| 1949-04 |
The capacitor division of Anritsu Corporation spun off to establish Annaka Corporation. |
| 1962-10 |
Annaka Denki Co., Ltd. merged with Annaka Seiki Co., Ltd. The corporate name was changed to Annaka Denki Seiki Co., Ltd. |
| 1963-03 |
Annaka Denki Seiki Corporation was listed at the Tokyo Stock Exchange, Second Section. |
| 1965-01 |
Hitachi capacitors Co., Ltd. was established. |
| 1965-04 |
Hitachi capacitors Co., Ltd. took over the operations of Kanagawa Works of Hitachi Chemical Co., Ltd. |
| 1965-10 |
Hitachi capacitors Co., Ltd. merged with Annaka Denki Seiki Co., Ltd. as a surviving company. The corporate name was changed to Hitachi capacitors |
| 1979-08 |
Took over the operations of Ninomiya Kogyo Co., Ltd. |
| 1984-07 |
The head office was moved to Nishi-Gotanda, Shinagawa-Ku, Tokyo. |
| 1989-08 |
Took over the operations of Miharu Manufacturing Co., Ltd. |
| 1990-10 |
Merged with Meiko Meguro Kogyo Co., Ltd. and Sanki Kogyo Co., Ltd. The corporate name was changed to Hitachi AIC Inc. |
| 2000-09 |
Listed shares on the First Section of the Tokyo Stock Exchange |
| 2001-07 |
Shares delisted from the Stock Exchange |
| 2001-08 |
Through the exchange of shares, Hitachi AIC Inc. became a wholly owned subsidiary of Hitachi Chemical Co., Ltd. |
| 2003-06 |
Changed the corporate structure to the "Company with a Committee System" |
| 2006-09 |
Changing to a corporation where the auditor is stationed. |
| 2008-04 |
Merged with Hitachi Chemical Electronics Company, Ltd., and the head office was moved to Moka-shi, Tochigi. |
| 2009-10 |
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.. |
| 2010-04 |
The head office was moved to Chuo-ku, Tokyo. |
| 2012-04 |
The head office was moved to Moka-shi, Tochigi. : Responsibility for handling the sale of the company's products was transferred to Shin-Kobe Electric Machinery Co.,Ltd. |
| 2013-04 |
Responsibility for handling the sale of the company's products was transferred to Hitachi Chemical Company, Ltd. |
| 2016-01 |
Hitachi AIC Inc. became a wholly owned subsidiary of Hitachi Chemical Co., Ltd. |
| 2020-04-01 |
当社は2020年4月1日に日立エーアイシー株式会社と会社分割し、エーアイシーテック株式会社として新発足しました。分割までの両者の沿革は次のとおりです。 |
