Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690896 | Distributor assembly for multi-bed down-flow catalytic reactors | Bruce E. Stangeland, Dennis R. Cash | 1997-11-25 |
| 5603904 | Apparatus for catalyst replacement | Robert W. Bachtel, Yoshitomo Ohara, Toshio Ishizuka, Tsunehiko Hiraga, David E. Earls | 1997-02-18 |