Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4594209 | Process for the preparation of voltage non-linearity type resistors | Keiichi Minegishi, Keiichi Katayama, Hiroshi Machida | 1986-06-10 |
| 4409030 | Material for destroying concrete structures | Keiichi Minegishi, Hiroshi Harada, Akihiko Takei, Motoshi Abe | 1983-10-11 |
| 4344062 | Humidity sensor element | Giichi Sudoh, Keiichi Minegishi, Tadao Kato, Norio Ogawa | 1982-08-10 |