Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6750160 | Detergent-impregnated article | Koji Hanaoka, Eiichi Hoshino, Hironobu Sionome | 2004-06-15 |
| 6376046 | Cleaning article impregnated with detergent | Eiichi Hoshino, Koji Hanaoka, Kazuo Mori, Kenji Ishikawa, Hironobu Sionome | 2002-04-23 |