Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814503 | Zeolite rho and ZK-5 catalysts for conversion of methanol and ammonia to dimethylamine | Lloyd Abrams, David Richard Corbin | 1989-03-21 |
| 4806689 | Zeolite Rho as catalyst for conversion of methanol and ammonia to dimethylamine | Thurman E. Gier, George C. Sonnichsen, David Richard Corbin, Michael Keane | 1989-02-21 |