Issued Patents All Time
Showing 1–25 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10122023 | Fuel cell with separator, method for manufacturing same, and fuel cell stack | Makoto Kuribayashi, Etsuya Ikeda, Yosuke Yatsuya, Masaaki Murase | 2018-11-06 |
| 8465636 | Ammonium gas sensor | Satoshi Sugaya, Shiro Kakimoto, Hiroyuki Nishiyama | 2013-06-18 |
| 8382973 | Method and apparatus for controlling multi-gas sensor | Satoshi Sugaya, Shiro Kakimoto, Tetsuo Yamada, Takio Kojima | 2013-02-26 |
| RE43758 | Spark plug with alloy chip | Junichi Kagawa | 2012-10-23 |
| 8152979 | Ammonia gas sensor | Satoshi Sugaya, Hiroyuki Nishiyama, Shiro Kakimoto | 2012-04-10 |
| 8072125 | Spark plug for use in an internal-combustion engine with a bilayer ground electrode | Kazuyoshi Torii, Kazumasa Yoshida | 2011-12-06 |
| 7859177 | Spark plug for internal-combustion engines | Osamu Yoshimoto | 2010-12-28 |
| 7847472 | Spark plug having noble metal tip | Akira Suzuki | 2010-12-07 |
| RE41944 | Method for manufacturing noble metal electric discharge chips for spark plugs | Osamu Yoshimoto, Yoshihiro Matsubara | 2010-11-23 |
| 7839064 | Spark plug for internal combustion engine | Kazumasa Yoshida, Kazuyoshi Torii | 2010-11-23 |
| 7827954 | Plasma-jet spark plug control method and device | Satoshi Nagasawa, Katsunori Hagiwara | 2010-11-09 |
| 7804232 | Spark plug with high durability | Kenichi Kumagai, Kenji Kobayashi | 2010-09-28 |
| 7714488 | Plasma jet spark plug and ignition system for the same | Satoshi Nagasawa, Katsunori Hagiwara | 2010-05-11 |
| 7714489 | Spark plug including ground electrode with arcuately curved face | Kazuyoshi Torii, Kazumasa Yoshida | 2010-05-11 |
| 7550906 | Spark plug having a noble-metal chip and method for manufacturing the same | Osamu Yoshimoto | 2009-06-23 |
| 7382084 | Spark plug having a precious metal tip | Osamu Yoshimoto, Yoshihiro Matsubara, Kenji Nunome | 2008-06-03 |
| 7291961 | Spark plug having a specific structure of noble metal tip on ground electrode | Akira Suzuki | 2007-11-06 |
| 7288879 | Spark plug having ground electrode including precious metal alloy portion containing first, second and third components | Osamu Yoshimoto, Yoshihiro Matsubara | 2007-10-30 |
| 7279827 | Spark plug with electrode including precious metal | Kenji Nunome, Osamu Yoshimoto, Yoshihiro Matsubara | 2007-10-09 |
| 7164225 | Small size spark plug having side spark prevention | Osamu Yoshimoto | 2007-01-16 |
| 7131191 | Method for manufacturing noble metal electric discharge chips for spark plugs | Osamu Yoshimoto, Yoshihiro Matsubara | 2006-11-07 |
| 7122947 | Glow plug and spark plug, and manufacturing method therefor | Hiroaki Nasu, Chiaki Kumada, Katsunari Ninomiya | 2006-10-17 |
| 6864622 | Spark plug | Masayuki Segawa, Satoko Ito, Osamu Yoshimoto | 2005-03-08 |
| 6858975 | Spark plug having an oil film on an intermediate portion of the insulator or intermediate portion of the metallic shell | — | 2005-02-22 |
| 6846416 | Process for treating chromate waste liquid | Hiroaki Nasu | 2005-01-25 |