Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6969750 | Water absorbent material and absorbent article using same | Hisakazu Tanaka, Toshiya Kato, Hideyuki Ishizu, Yoshiki Hasegawa | 2005-11-29 |
| 6653399 | Water absorbent material | Hisakazu Tanaka, Yoshiki Hasegawa | 2003-11-25 |