Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5762841 | Ceramic porous body having a continuous particle size distribution | Shunzo Shimai, Koichi Imura, Kenichi Okamoto, Koichi Shiraishi | 1998-06-09 |
| 5089134 | Silica glass filter | Koichi Shiraishi, Masaru Shimbo, Shunzo Shimai | 1992-02-18 |