Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656213 | Process for the production of carbon-filled ceramic composite material | Kazuhiro Otsuka | 1997-08-12 |
| 5618783 | Synthesized inorganic ion exchange material and detergent composition containing the same | Ichiro Sakamoto, Ryuichi Akagi, Shu Yamaguchi, Masaki Tsumadori | 1997-04-08 |