Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838723 | Flexible pen nib for writing purposes | Kozo Ando, Tooru Enomoto | 1989-06-13 |
| 4462136 | Dental implement for removing plaque and massaging gums | Shunichi Nakao, Motonori Yamauchi | 1984-07-31 |
| 4384852 | Dental root canal-treating appliance | Motonori Yamauchi, Fumio Tanaka | 1983-05-24 |