Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5834108 | Multi-layered ceramic porous body | Shunzo Shimai, Koichi Imura, Ichiro Shibata, Kenichi Okamoto, Akiko Niizuma | 1998-11-10 |
| 5405529 | Ceramic filter and manufacturing method therefor | Shunzo Shimai, Koichi Imura, Kenichi Okamoto | 1995-04-11 |
| 4476356 | Multi-position electrical switch | Kiyoshi Nakayama | 1984-10-09 |