Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10947877 | Exhaust gas purification filter | Mikio Ishihara, Akira Miyashita, Hironori Niwa | 2021-03-16 |
| 10569207 | Exhaust gas filter | Hironori Niwa, Mikio Ishihara, Takao Mishima, Shingo Nakata, Hiroaki Fujii +2 more | 2020-02-25 |