Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5603904 | Apparatus for catalyst replacement | Robert W. Bachtel, Yoshitomo Ohara, Toshio Ishizuka, Krishniah Parimi, David E. Earls | 1997-02-18 |
| 5527512 | Apparatus for catalyst replacement | Robert W. Bachtel, Yoshitomo Ohara, Toshio Ishizuka | 1996-06-18 |