Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4724849 | Narrow-cross sectioned fibers for use in tobacco smoker filters | Junji Kawamoto, Atsumu Ohga, Masaharu Takegawa | 1988-02-16 |
| 4619279 | Tobacco smoke filter | Akira Miyazawa, Mitsuyosi Miyutani | 1986-10-28 |
| 4292984 | Filter for cigarette smoke | Hideo Sawada, Koji Shinohara | 1981-10-06 |