Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5271920 | Activation of zeolites | Clarence D. Chang, Nai Y. Chen, Bruce P. Pelrine | 1993-12-21 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5271920 | Activation of zeolites | Clarence D. Chang, Nai Y. Chen, Bruce P. Pelrine | 1993-12-21 |