Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4637408 | Filter material for the removal of nitric oxide | Charles S. McClung | 1987-01-20 |
| 4574819 | Process for increasing the filling power of tobacco | Dean M. Siwiec | 1986-03-11 |
| 4516589 | Non-combustible carbonized cigarette filters | Charles S. McClung | 1985-05-14 |
| 4485829 | Process for increasing the filling power of tobacco | Dean M. Siwiec | 1984-12-04 |
| 4481958 | Combustible carbon filter and smoking product | Gus D. Keritsis | 1984-11-13 |
| 4388933 | Tobacco stem treatment and expanded tobacco product | Dean M. Siwiec | 1983-06-21 |
| 4366823 | Process for expanding tobacco | Dean M. Siwiec | 1983-01-04 |
| 4366824 | Process for expanding tobacco | John R. Hearn | 1983-01-04 |
| 4246910 | Cigarette filter material comprising compounds of iron in high oxidation states | Cynthia V. Bailey | 1981-01-27 |
| 4219031 | Smoking product having core of fibrillar carbonized matter | Donald A. Full | 1980-08-26 |
| 4184495 | Process for incorporating flavorant into cellulosic substrates and products produced thereby | Peter A. Wilson | 1980-01-22 |
| 4182743 | Filter material for selective removal of aldehydes for cigarette smoke | Irvin R. Feins | 1980-01-08 |