Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8197571 | Air filter with improved structural support | — | 2012-06-12 |
| 7255723 | Crest supported filter frame assembly and method | Kyung-Ju Choi, Ronald Unthank | 2007-08-14 |
| 7112255 | Thermobondable filter medium and border frame and method of making same | Kyung-Ju Choi, Paul B. Ryan | 2006-09-26 |
| 6758878 | Thermobondable filter medium and border frame and method of making same | Kyung-Ju Choi, Paul B. Ryan | 2004-07-06 |
| 6398839 | Pleated fluid filter medium frame | Kyung-Ju Choi, Ronald E. Braswell | 2002-06-04 |
| 6254653 | Pleated fluid filter medium blend | Kyung-Ju Choi, Ronald E. Braswell | 2001-07-03 |
| 5533700 | Holder for a container | — | 1996-07-09 |