Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6226176 | Portable device and concentrator therefor | Kenzo Horie, Munehiro Torii, Kiyotsugu Hayashi, Takayuki Takahashi, Hirokazu Gotoh | 2001-05-01 |
| 6122162 | Portable device and concentrator therefor | Kenzo Horie, Munehiro Torii, Kiyotsugu Hayashi, Takayuki Takahashi, Hirokazu Gotoh | 2000-09-19 |