Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5094253 | Dye for coloring cigarette paper | Frank Kelley St. Charles, John H. Lauterbach, Li-Chung Chao, Jiunn-Yann Tang, Baran B. Chakraborty | 1992-03-10 |
| 5016656 | Cigarette and method of making same | — | 1991-05-21 |
| 4708150 | Cigarette filter | Charles G. Lamb | 1987-11-24 |
| 4611607 | Cigarette filter | Martin L. Reynolds, Dorothy M. Frank, Tilford F. Riehl | 1986-09-16 |
| 4424819 | Cigarette filter | Donald A. Silberstein | 1984-01-10 |
| 4406295 | Cigarette filter | Robert A. Sanford | 1983-09-27 |