Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9929542 | Spark plug and method for manufacturing the same | Koji Yamanaka, Ken Hanashi | 2018-03-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9929542 | Spark plug and method for manufacturing the same | Koji Yamanaka, Ken Hanashi | 2018-03-27 |