Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6959392 | Information providing system and method for providing information | Kenichi Yamamoto, Hideaki Okada, Hideki Mikamoto | 2005-10-25 |
| 5971096 | Noise barrier and method of installing same | Koich Matsumoto, Minoru Yamamoto, Toshikazu Osafune, Toshiyuki Watanabe, Hiroshi Shima | 1999-10-26 |