Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9803596 | Honeycomb filter | Yukio Miyairi, Kazuhiko Kumazawa, Toshihiro Hirakawa | 2017-10-31 |
| 9700842 | Honeycomb filter | Yukio Miyairi, Kazuhiko Kumazawa, Toshihiro Hirakawa | 2017-07-11 |