Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6885135 | Spark plug and its manufacturing method | Tsunenobu Hori | 2005-04-26 |
| 6885137 | Spark plug and its manufacturing method | Tsunetoshi Goto | 2005-04-26 |
| 6853116 | Structure of spark plug designed to provide higher durability and ignitability of fuel | Tsunenobu Hori | 2005-02-08 |
| 6844662 | Spark plug and ignition apparatus | Hitoshi Morita, Shinichi Okabe, Takehiko Kato, Hiroshi Yorita, Tetsuya Miwa | 2005-01-18 |