Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5603904 | Apparatus for catalyst replacement | Robert W. Bachtel, Toshio Ishizuka, Tsunehiko Hiraga, Krishniah Parimi, David E. Earls | 1997-02-18 |
| 5527512 | Apparatus for catalyst replacement | Robert W. Bachtel, Toshio Ishizuka, Tsunehiko Hiraga | 1996-06-18 |
| 4196050 | Decoking apparatus | Hisao Takahashi, Takeshi Nomura, Hajime Nakanishi, Naotaka Miwa, Naoshi Kawabe +3 more | 1980-04-01 |