Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8904755 | Heater control device of oxygen concentration sensor | Keiichi Takeda | 2014-12-09 |
| 4369263 | Friction material containing steel wool as reinforcing agent | Noriaki Matsushima, Kazuhisa Hirano | 1983-01-18 |