Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6788990 | Process control device and process control method | Masataka Okabe, Hirofumi Ohtsuka | 2004-09-07 |
| 6733243 | Method of interbay transportation | Ryoji Ogata, Hirofumi Ohtsuka | 2004-05-11 |
| 6687568 | Transportation system | Hirofumi Ohtsuka, Ryoji Ogata | 2004-02-03 |