Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4285677 | Method and apparatus for the manufacture of cigarette filters containing particulate material | Akira Ito | 1981-08-25 |
| 4181007 | Method and an apparatus for conducting measurements of physical properties of cigarette filters | Seiichi Kobayashi, Kiyoshi Higashio | 1980-01-01 |