Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8341934 | Infrared suppression system with spiral septum | John S. Chapkovich, III, Henry E. Voegeli, Nathan C. Blair | 2013-01-01 |
| 7080977 | Discharge diffuser for screw compressor | Duane C. McCormick, Dochul Choi, Gavin Hendricks, William Rousseau, H. Ezzat Khalifa +2 more | 2006-07-25 |
| 6775994 | Refrigerated display merchandiser with variable air curtain | Dochul Choi | 2004-08-17 |