Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5434330 | Process and apparatus for separation of constituents of gases using gas hydrates | John Happel | 1995-07-18 |
| 4491639 | Methods of making high activity transition metal catalysts | John Happel, Laimonis Bajars | 1985-01-01 |
| 4320030 | Process for making high activity transition metal catalysts | John Happel | 1982-03-16 |
| 4260553 | Alumina-containing methanation catalysts | John Happel | 1981-04-07 |