Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9604298 | Method of manufacturing screw thread and screw thread | Toshiyuki Shimizu, Masao Kobayashi, Kenji Nishikawa, Seiji Otani, Manabu Takeda | 2017-03-28 |
| 6264897 | Ozone generator | Hisamichi Ishioka, Kazuki Kai, Eiji Sakai, Terushige Ogawa, Atsumi Miyake | 2001-07-24 |
| 6027701 | Ozone generator | Hisamichi Ishioka, Makoto Toraguchi, Hideaki Nishii | 2000-02-22 |