Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7112255 | Thermobondable filter medium and border frame and method of making same | Kyung-Ju Choi, Dennis R. Porter | 2006-09-26 |
| 6758878 | Thermobondable filter medium and border frame and method of making same | Kyung-Ju Choi, Dennis R. Porter | 2004-07-06 |