Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5676802 | Apparatus for treating waste water | Kenji Satoh, Sei Tange, Shun-ichi Ohya | 1997-10-14 |
| 5242665 | Carbon containing compound treating apparatus with resistance to carbon deposition | Keikichi Maeda, Kunio Ishii, Takahiro Iijima | 1993-09-07 |
| 5103870 | Carbon deposition preventive double-layered tube for handling carbonaceous compounds | Kunio Ishii, Takahiro Iijima | 1992-04-14 |
| 4976932 | Carbon containing compound treating apparatus with resistance to carbon deposition | Keikichi Maeda, Kunio Ishii, Takahiro Iijima | 1990-12-11 |
| 4356148 | Method for preventing corrosion and hydrogen embrittlement of tantalum-made equipment handling hot concentrated sulphuric acid therein | Katsumi Yamamoto, Rin Sasano, Takao Kusakabe, Yasuhiro Moriya | 1982-10-26 |