Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5242665 | Carbon containing compound treating apparatus with resistance to carbon deposition | Naohiko Kagawa, Kunio Ishii, Takahiro Iijima | 1993-09-07 |
| 4976932 | Carbon containing compound treating apparatus with resistance to carbon deposition | Naohiko Kagawa, Kunio Ishii, Takahiro Iijima | 1990-12-11 |
| 4536455 | Centrifugally cast double-layer tube with resistance to carbon deposition | Takahiro Iijima, Eiichi Sato | 1985-08-20 |
| 4532109 | Process for providing an apparatus for treating hydrocarbons or the like at high temperatures substantially without carbon deposition | Takahiro Iijima | 1985-07-30 |