Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8264131 | Spark plug | Nobuaki Sakayanagi | 2012-09-11 |
| 8247740 | Spark plug, and its manufacturing method | Satoshi Nagasawa | 2012-08-21 |
| 8222803 | Spark plug and manufacturing method thereof | Kohei Katsuraya | 2012-07-17 |
| 8212463 | Spark plug and its manufacturing method | Nobuaki Sakayanagi | 2012-07-03 |
| 8188641 | Spark plug | Hiroyuki Kameda, Satoshi Nagasawa | 2012-05-29 |
| 8102106 | Spark plug and method of manufacturing the same | Kohei Katsuraya | 2012-01-24 |
| 8013503 | Spark plug for internal combustion engine having ground electrode with thick, thin and stepped portion and method for producing the spark plug | Hiroyuki Kameda, Satoshi Nagasawa | 2011-09-06 |
| 8013504 | Spark plug for internal combustion engine and method for producing the spark plug | Hiroyuki Kameda, Satoshi Nagasawa | 2011-09-06 |
| 7906894 | Spark plug for internal combustion engine | Hiroyuki Kameda, Tomoaki Kato | 2011-03-15 |
| 7825572 | Spark plug | Hiroyuki Kameda | 2010-11-02 |
| 7821186 | Spark plug having specific configuration of center electrode with respect to outer electrode | Hiroyuki Kameda, Satoshi Nagasawa, Kazumasa Yoshida | 2010-10-26 |
| 7781949 | Spark plug | Kaori Kishimoto, Hiroyuki Kameda, Yasushi Sakakura | 2010-08-24 |
| 7703428 | Spark plug and internal combustion engine in which the spark plug is disposed | Hiroyuki Kameda | 2010-04-27 |
| 7150252 | Spark plug and internal combustion engine equipped with the spark plug | Yoshihisa Sugiyama, Takeru Wakamatsu | 2006-12-19 |
| 6654945 | Storage medium in which data for designing an integrated circuit is stored and method of fabricating an integrated circuit | Satoshi Kojima, Syouhei Oda | 2003-11-25 |
| 6436645 | Method for predicting risk of developing chronic pulmonary emphysema | Hidetada Sasaki, Shoji Okinaga, Mutsuo Yamaya | 2002-08-20 |
| 5797383 | Dual polarity type ignition system for a spark plug group | Yoshihiro Matsubara | 1998-08-25 |