Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6638427 | Waste water treatment method being able to treat surface active agent, nitrogen, hydrogen peroxide and phosphor with high efficiency | Kazuyuki Yamasaki, Shigeki Matsumoto | 2003-10-28 |
| 6571848 | Sealing apparatus | Tadaaki Tsuken, Norio Mori, Kazuo Okabayashi, Kazushi Hayano, Shigenori Hato +1 more | 2003-06-03 |
| 6512741 | Communication device with multi-stages of traffic shaping functions | Kiyoshi Kohzuki, Takeshi Aimoto, Takeki Yazaki, Yoshinori Yamamura | 2003-01-28 |