Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4610856 | Silicon substituted zeolite compositions and process for preparing same | Gary W. Skeels, Donald W. Breck, deceased | 1986-09-09 |
| 4503023 | Silicon substituted zeolite compositions and process for preparing same | Donald W. Breck, deceased, Gary W. Skeels | 1985-03-05 |