Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832721 | Authentication system using information on position | — | 2004-12-21 |
| 6723797 | Crosslinking agent for water-absorbing resin and water-absorbing material obtained with the same | Yoshiyuki Morita, Tetsuya Hosomi, Nobuaki Aoki | 2004-04-20 |
| 6688731 | Piezoelectric thin film element, ink jet recording head using such a piezoelectric thin film element, and their manufacture methods | Isaku Kanno, Ryoichi Takayama, Osamu Watanabe, Kenji Tomita, Shigeyuki Takao | 2004-02-10 |