Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6595218 | Cigarette filter | Susan E. Wrenn, Willie G. Houck, Jr., John B. Paine, III | 2003-07-22 |
| 6584979 | High efficiency cigarette filters having shaped microcavity fibers impregnated with adsorbent or absorbent materials | Lixin Xue, Qiong Gao | 2003-07-01 |