Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34595 | Process for removing oxygen and nitrogen from crude argon | Michael S. Chen | 1994-05-03 |
| 5210223 | Elevated pressure phthalic anhydride process | Michael S. Chen, Harold H. Gunardson, Melinda B. Ulrich | 1993-05-11 |
| 5035726 | Process for removing oxygen from crude argon | Michael S. Chen | 1991-07-30 |
| 4846862 | Reliquefaction of boil-off from liquefied natural gas | — | 1989-07-11 |