Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7182378 | Assist tool for chopsticks | Kenshun Ishii | 2007-02-27 |
| D502414 | Thermometer | Fumie Shibata, Yuuki Shibata, Masatoshi Doi | 2005-03-01 |
| D498827 | Baby baths | Fumie Shibata, Yuuki Shibata, Keita Tanaka, Masatoshi Doi | 2004-11-23 |
| D489538 | Bath chair for infant | Fumie Shibata, Yuuki Shibata, Keita Tanaka, Masatoshi Doi | 2004-05-11 |