Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880611 | Crystalline composition | Cynthia T-W. Chu, Michael E. Landis, Eric G. Derouane | 1989-11-14 |
| 4874504 | pH control by bulky organic bases during noble-metal exchange of zeolite catalysts | Francis Ryan | 1989-10-17 |
| 4832927 | Use of poly-nuclear oxo-metalates in synthesis of crystalline oxides | John B. Higgins | 1989-05-23 |
| 4814306 | Ph control by bulky organic bases during noble-metal exchange of zeolite catalysts | Francis Ryan | 1989-03-21 |