Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5882422 | Method for removing clogging dust in honeycomb catalyst | Yoshiaki Obayashi, Kozo Iida, Mitsunori Ooizumi, Osamu Naito | 1999-03-16 |
| 4671017 | Method and apparatus for grinding a rotary body | Masashi Oya, Kanji Hayashi, Tsuneo Egawa, Hiroaki Shimazutsu, Junichi Ibushi +3 more | 1987-06-09 |