Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5401224 | Method for measuring instantaneous power generated by a leg extending force | Masao Ito | 1995-03-28 |
| 5277674 | Leg extension apparatus with pivotal foot section for measuring instantaneous power generated by a leg extending force | Masao Ito | 1994-01-11 |
| 5260870 | Apparatus for measuring instantaneous power by leg-stretching power | Masao Ito | 1993-11-09 |
| 4653745 | Handle for an ergometer or the like | Shinroku Nakao, Yoshiyasu Ishii, Kenshun Ishii | 1987-03-31 |
| 4575896 | Caster with an oscillation stopping mechanism | Shinroku Nakao | 1986-03-18 |