Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618620 | Filter rod for filtering the smoke of a cigarette | Akihisa Matsuda | 1997-04-08 |
| 5466209 | Cigarette filter-rod manufacturing device | Motoharu Kotani, Hiromu Yokota | 1995-11-14 |
| 5225277 | Acetate tow having high crimp modulus and manufacturing method thereof | Akihisa Matsuda | 1993-07-06 |
| 4724849 | Narrow-cross sectioned fibers for use in tobacco smoker filters | Junji Kawamoto, Atsumu Ohga, Makoto Shiga | 1988-02-16 |