Issued Patents 2016
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9377001 | Spark plug for internal combustion engine | Takanobu Aochi, Masamichi Shibata, Noriaki Nishio | 2016-06-28 |
| 9287685 | Spark plug for internal combustion engine | Takanobu Aochi, Takayuki Inohara, Shinichi Okabe, Masamichi Shibata | 2016-03-15 |
| 9234491 | Spark plug for internal combustion engine | Takanobu Aochi, Masamichi Shibata, Noriaki Nishio | 2016-01-12 |