Issued Patents 2004
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817350 | Ignition device for an internal combustion engine | Tetsuya Miwa, Atsuya Mizutani | 2004-11-16 |
| 6798124 | Structure of spark plug designed to provide high thermal resistance and durability | — | 2004-09-28 |
| 6756722 | Method for fabricating spark plug with piezoelectric sensor and spark plug fabricated by the same | — | 2004-06-29 |
| 6720716 | Spark plug and method for manufacturing the same | Masamichi Shibata, Teiji Ishinada | 2004-04-13 |
| 6698411 | Ignition device for internal combustion engine | Takeo Maekawa, Tetsuya Miwa | 2004-03-02 |
| 6694958 | Ignition device for internal combustion engine | Masamichi Shibata, Tetsuya Miwa, Takeo Maekawa | 2004-02-24 |
| 6675785 | Ignition device for an internal combustion engine | Tetsuya Miwa, Atsuya Mizutani, Takeo Maekawa, Tohru Yoshinaga | 2004-01-13 |