Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9556847 | Plasma ignition device and plasma ignition method | Tatsunori Yamada | 2017-01-31 |
| 9316199 | Ignition device and structure for mounting same | Tatsunori Yamada, Katsutoshi Nakayama | 2016-04-19 |
| 9263857 | Ignition system | Katsutoshi Nakayama | 2016-02-16 |
| 9240676 | Ignition plug | — | 2016-01-19 |
| 9231382 | Plasma ignition device and plasma ignition method | Tatsunori Yamada, Katsutoshi Nakayama | 2016-01-05 |
| 9169820 | Ignition system | Tatsunori Yamada, Katsutoshi Nakayama | 2015-10-27 |
| 9035562 | Ignition plug and ignition apparatus | Tatsunori Yamada, Katsutoshi Nakayama | 2015-05-19 |
| 8981635 | High-frequency spark plug with center electrode and terminal electrode in direct contact | Tatsunori Yamada | 2015-03-17 |
| 8976504 | Ignition system and spark plug | Katsutoshi Nakayama | 2015-03-10 |
| 8946977 | Spark plug having fusion zone | Katsutoshi Nakayama | 2015-02-03 |
| 8907552 | High-frequency plasma spark plug | Katsutoshi Nakayama | 2014-12-09 |
| 8629605 | Spark plug having shaped insulator | Hiroyuki Kameda, Katsutoshi Nakayama | 2014-01-14 |
| 8471448 | High-frequency plasma spark plug | Tatsunori Yamada, Katsutoshi Nakayama | 2013-06-25 |
| 8466608 | Spark plug and manufacturing method thereof | Katsutoshi Nakayama | 2013-06-18 |
| 8350455 | Spark plug including ground electrode having a protrusion and a hole | Hiroyuki Kameda | 2013-01-08 |
| 8222803 | Spark plug and manufacturing method thereof | Katsutoshi Nakayama | 2012-07-17 |
| 8102106 | Spark plug and method of manufacturing the same | Katsutoshi Nakayama | 2012-01-24 |