| サムネール | 年 | 篇 | タイトル | 内容 | コメント | イメージ | ファイル |
| 1968 | Established Saneidenki Manufacturing in Iwate. | Established Saneidenki Manufacturing in Iwate. |
| 1970 | Established Sanei TOKO (TOKO, Inc. 60% stake.) Started production of IFT (Intermediate frequency transformer) . | Established Sanei TOKO (TOKO, Inc. 60% stake.) Started production of IFT (Intermediate frequency transformer) . |
| 1998 | Sanei TOKO became a wholly owned subsidiary of TOKO, Inc. | Sanei TOKO became a wholly owned subsidiary of TOKO, Inc. |
| 2001 | Name of company changed to TOKO Coiltec Co., Ltd. Started operation of product development and mechanical development | Name of company changed to TOKO Coiltec Co., Ltd. Started operation of product development and mechanical development |
| 2002 | Developed FD (Miniature / High Current Inductor). | Developed FD (Miniature / High Current Inductor). |
| 2009 | Developed metal magnetic powder. Developed DFEC (Ultra Miniature / High Current Inductor). | Developed metal magnetic powder. Developed DFEC (Ultra Miniature / High Current Inductor). |
| 2016 | TOKO Coiltec became a group company of Murata Manufacturing Co., Ltd. | TOKO Coiltec became a group company of Murata Manufacturing Co., Ltd. |
| 2018 | Started operation of EMI Laboratory. | Started operation of EMI Laboratory. |
| 2019 | Name of company changed to COILTEC Co., Ltd. | Name of company changed to COILTEC Co., Ltd. |
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