Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10367335 | Spark plug and production method therefor | Hiroyuki Hazama | 2019-07-30 |
| 10186845 | Electrode tip for spark plug, and spark plug | Daisuke Sumoyama, Tatsuya Gozawa, Magoki Shimadate | 2019-01-22 |