Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12322930 | Insulator and spark plug | Yutaka Yokoyama, Toshiki Kon | 2025-06-03 |
| 10352893 | Gas sensor control apparatus | Keisuke NAKAGAWA, Shigehiro OHTSUKA, Hisashi KOZUKA, Kazuma Ito | 2019-07-16 |
| 10012612 | Gas sensor element and gas sensor | Shigehiro OHTSUKA, Tomohiro Nishi, Keisuke NAKAGAWA, Kazuma Ito | 2018-07-03 |
| 6977111 | Multi-layer paper peelable into at least two thin sheets | Hideyuki Yamaguchi, Hiroshi Tateishi, Munenaka Koyama, Yoshihiro Mimura | 2005-12-20 |
| 5667900 | Aramid paper with high surface smoothness | Yuji Kimura, Lee J. Hesler | 1997-09-16 |
| 5316839 | Heat resistant, flame resistant conducting sheet having an electrical insulation layer | Akiyoshi Takano | 1994-05-31 |
| 4645566 | Process for producing electroconductive films | Masao Takasu, Nobuo Maruyama | 1987-02-24 |