Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5228892 | Exhaust emission control device | Yasuo Akitsu, Hiroyuki Okahara | 1993-07-20 |
| 4882130 | Porous structure of fluid contact | Katsuya Asai | 1989-11-21 |
| 4719090 | Porous structure for fluid contact | — | 1988-01-12 |
| 4541967 | Packing for packed towers for inter-fluid contact | — | 1985-09-17 |