Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5580508 | Process for preparing calcium silicate articles | Waichi Kobayashi, Satoshi Otaka, Hideo Uchiyama, Toshihiro Nakata | 1996-12-03 |
| 4707270 | Process for treating waste water containing phosphorus compounds and/or organic cod substances | Waichi Kobayashi, Koji Usui, Kozo Hirosawa | 1987-11-17 |