Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5188773 | Tower packing with small and large louvers and mixing method | Gilbert K. Chen, Robert McKelvy, Jorge A. Bonilla, George De Bruyn | 1993-02-23 |
| 5185106 | Tower packing with small louvers and mixing method | Gilbert K. Chen, Robert McKelvy, Jorge A. Bonilla, George De Bruyn | 1993-02-09 |
| 5080836 | Tower packing with small and large louvers | Gilbert K. Chen, Robert McKelvy, Jorge A. Bonilla | 1992-01-14 |
| 5057250 | Tower packing with small louvers | Gilbert K. Chen, Robert McKelvy, Jorge A. Bonilla | 1991-10-15 |