Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8202482 | Apparatus for removing of trace of toxic substance from exhaust gas and method of operating the same | Yoshinori Nagai, Toshio Katsube, Hirofumi Kikkawa, Yasuyoshi Kato | 2012-06-19 |
| 6063342 | Catalyst unit and gas purifying apparatus | Yasuyoshi Kato, Tomihisa Ishikawa, Yoshinori Nagai, Masato Mukai, Akihiro Yamada +3 more | 2000-05-16 |
| 5792432 | Catalyst unit and gas purifying apparatus | Yasuyoshi Kato, Tomihisa Ishikawa, Yoshinori Nagai, Masato Mukai, Akihiro Yamada +3 more | 1998-08-11 |
| 5409681 | Catalyst for purifying exhaust gas | Yasuyoshi Kato, Kunihiko Konishi, Fumito Nakajima, Ikuhisa Hamada | 1995-04-25 |
| 4726935 | Apparatus for removing nitrogen oxides | Yoshiro Inatsune, Tomihisa Ishikawa | 1988-02-23 |