Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851605 | Process for synthesizing a zeolite catalyst on a pH controlled sodium free basis | Wim J. M. Pieters, Elena N. Suciu | 1989-07-25 |
| 4804800 | Process for synthesizing a zeolite catalyst on a pH controlled basis to improve catalyst life | Robert A. Maggio, Wim J. M. Pieters | 1989-02-14 |