Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7419536 | Electroless gold plating liquid | Akihiro Aiba, Yoshiyuki Hisumi | 2008-09-02 |
| 7396394 | Electroless gold plating solution | Akihiro Aiba, Hirofumi Takahashi | 2008-07-08 |
| 7390354 | Electroless gold plating solution | Akihiro Aiba | 2008-06-24 |
| 6923699 | Method of making a spark plug | Yoshihiro Matsubara, Shinichi Hiramatsu, Masahiro Ishikawa | 2005-08-02 |
| 6703770 | Spark plug attachment structure and spark plug therefor | Akira Suzuki, Takahiro Suzuki, Kazuya Iwata | 2004-03-09 |
| 5514929 | Spark plug including a ground electrode, a center electrode, and a resistor | — | 1996-05-07 |
| 4288714 | Spark plug for internal combustion engine | Shigeyasu Yamada, Shuji Nakamura | 1981-09-08 |