Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6432374 | Solid chloride absorbent | Nobuyashi Hayashi, Yasushi Shioya, Kaoru Fujiwara, Mitsuhiro Ohashi | 2002-08-13 |
| 4677976 | Emergency mask | Katsumi Fujinuma, Yoriyuki Hayashi | 1987-07-07 |
| 4572178 | Emergency mask | Yoriyuki Hayashi | 1986-02-25 |