Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6057023 | Mat | Yuji Nagahama | 2000-05-02 |
| 5904901 | Deodorization/odor-removal/disinfection method and deodorization/odor-removal/disinfection apparatus | Eiichi Tominaga, Masao Kajimaki | 1999-05-18 |
| 5887416 | Rental mat | Yuji Nagahama | 1999-03-30 |
| 4237816 | Oil coater for mat | Ichiro Miyoshi, Osamu Yamasaki | 1980-12-09 |