Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808309 | Variable length membrane module | Richard F. Beaupre, Martin D. Hilmar | 1989-02-28 |
| 4476009 | Process for improving the hydrogen donor properties of a coal liquefaction solvent | Erven J. Kuhlmann, Dick Y. Jung, Hyung K. Zang | 1984-10-09 |