Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11695257 | Spark plug | Seiji Nakano, Kota Yamauchi | 2023-07-04 |
| 10290999 | Spark plug | Kazuki Koike | 2019-05-14 |
| 10084289 | Spark plug | — | 2018-09-25 |
| 9783872 | Electrode material and spark plug | Osamu Yoshimoto, Tomonori Kanemaru, Tomo Tanaka, Toshihiro Uehara | 2017-10-10 |
| 9768588 | Spark plug and manufacturing method therefor | Takaaki Kikai, Tomoo Tanaka, Tsutomu Shibata, Kaori Suzuki | 2017-09-19 |
| 9343876 | Spark plug | Osamu Yoshimoto, Tomoo Tanaka, Tomonori Kanemaru | 2016-05-17 |
| 8952601 | Spark plug | Osamu Yoshimoto, Tomoo Tanaka | 2015-02-10 |
| 8664842 | Spark plug | Tomoo Tanaka, Tsutomu Shibata, Osamu Yoshimoto, Takaaki Kikai, Kenji Nunome | 2014-03-04 |
| 8593045 | Spark plug | Osamu Yoshimoto, Tomo Tanaka | 2013-11-26 |
| 8368293 | Spark plug and method of manufacturing the same | Shinya Mitsuda, Takaaki Kikai | 2013-02-05 |
| 8283846 | Spark plug containing specific ratio content | Tsutomu Shibata, Tomoo Tanaka, Kenji Nunome, Shoichiro Nagatomo | 2012-10-09 |
| 6498309 | Circuit board and manufacturing method thereof | — | 2002-12-24 |
| 6373445 | Converter for antenna to receive signals from two satellites | — | 2002-04-16 |