| 10751923 |
Spark plug insulator production method, insulator, molding die |
Hirokazu Kurono, Hironori Uegaki, Hiroyuki Hazama, Kuniharu Tanaka, Hiroyuki Kawaji |
2020-08-25 |
| 10637212 |
Method for manufacturing insulator for spark plug |
Hironori Uegaki, Hirokazu Kurono, Hiroyuki Hazama |
2020-04-28 |
| 10090646 |
Spark plug |
Katsuya Takaoka, Kazuhiro Kurosawa, Kuniharu Tanaka, Hisashi KOZUKA, Hirokazu Kurono +2 more |
2018-10-02 |
| 9912126 |
Spark plug insulator containing mullite and spark plug including same |
Kengo Fujimura, Hirokazu Kurono, Ryuji Nagae |
2018-03-06 |
| 9912125 |
Spark plug |
Haruki Yoshida, Jumpei Isasa, Yutaka Yokoyama, Kuniharu Tanaka, Nobuyoshi Araki +1 more |
2018-03-06 |
| 9711951 |
Spark plug |
Yoshitomo Iwasaki, Haruki Yoshida |
2017-07-18 |
| 9614354 |
Spark plug |
Haruki Yoshida, Jumpei Kita, Yoshitomo Iwasaki |
2017-04-04 |
| 9595814 |
Spark plug |
Takashi KASASHIMA, Katsuya Takaoka, Kazuhiro Kurosawa, Kuniharu Tanaka, Hirokazu Kurono +2 more |
2017-03-14 |
| 9590395 |
Spark plug |
Katsuya Takaoka, Kazuhiro Kurosawa, Kuniharu Tanaka, Hirokazu Kurono, Haruki Yoshida +1 more |
2017-03-07 |
| 9484718 |
Spark plug |
Haruki Yoshida, Takamitsu Mizuno, Masaaki Kumagai, Jumpei Kita, Yoshitomo Iwasaki |
2016-11-01 |
| 9466951 |
Spark plug |
Katsuya Takaoka, Hironori Uegaki, Hirokazu Kurono |
2016-10-11 |
| 9425585 |
Insulator and spark plug |
Kengo Fujimura, Toshimasa Saji, Hirokazu Kurono |
2016-08-23 |
| 9385511 |
Spark plug |
Hiroki Takeuchi, Yutaka Yokoyama, Kuniharu Tanaka, Takeshi Mitsuoka, Hirokazu Kurono +2 more |
2016-07-05 |
| 9373940 |
Spark plug |
Katsuya Takaoka, Kazuhiro Kurosawa, Kuniharu Tanaka, Haruki Yoshida, Hirokazu Kurono |
2016-06-21 |
| 9362722 |
Spark plug with improved withstand voltage characteristics and high mechanical strength at high temperatures |
Katsuya Takaoka, Hirokazu Kurono, Syuuichiro Wakizoe, Mitsushiro Kondo |
2016-06-07 |
| 9281662 |
Spark plug |
Katsuya Takaoka, Kazuhiro Kurosawa, Kuniharu Tanaka, Haruki Yoshida, Hirokazu Kurono |
2016-03-08 |
| 9160147 |
Spark plug and manufacturing method for same |
Haruki Yoshida, Houju Fukushima |
2015-10-13 |
| 9160144 |
Spark plug with internal resistor having Ti and Zr components |
Haruki Yoshida |
2015-10-13 |
| 9160145 |
Insulator for spark plug and spark plug |
Katsuya Takaoka, Yutaka Yokoyama, Kengo Fujimura, Hironori Uegaki, Hiroki Takeuchi +3 more |
2015-10-13 |
| 9093824 |
Spark plug |
Hoju Fukushima, Takamitsu Mizuno, Tsutomu Shibata |
2015-07-28 |
| 9077157 |
Ignition plug having a rear trunk portion that provides sufficient strength |
Hirokazu Kurono |
2015-07-07 |
| 9054501 |
Spark plug |
Kengo Fujimura, Hirokazu Kurono |
2015-06-09 |
| 8970098 |
Ignition plug |
Toshimasa Saji, Hirokazu Kurono |
2015-03-03 |
| 8928214 |
Ignition plug |
Toshimasa Saji, Hirokazu Kurono |
2015-01-06 |
| 8770777 |
Spark plug |
Haruki Yoshida, Akira Suzuki |
2014-07-08 |
