Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5008584 | Spark plug having a built-in resistor for suppressing noise signals | Kiyoaki Tanaka | 1991-04-16 |
| 4713582 | Spark plug | Manabu Yamada, Ichirou Yoshida, Shunzo Yamaguchi | 1987-12-15 |
| 4681989 | Ignition distributor for internal combustion engines | Naotaka Nakamura, Kenji Yagi, Shunzo Yamaguchi, Ichirou Yoshida | 1987-07-21 |
| 4644133 | Ceramic heater | Naochika Nunogaki, Novuei Ito, Naohito Mizuno | 1987-02-17 |
| 4640996 | Ignition distributor for internal combustion engines | Ichirou Yoshida, Naotaka Nakamura, Kenji Yagi, Shunzo Yamaguchi, Manabu Yamada | 1987-02-03 |
| 4634837 | Sintered ceramic heater element | Novuei Ito, Kinya Atsumi, Hitoshi Yoshida | 1987-01-06 |
| 4633064 | Sintered ceramic electric heater with improved thermal shock resistance | Hitoshi Yoshida, Novuei Ito, Kinya Atumi | 1986-12-30 |
| 4625085 | Material for high frequency suppression and distributor for combustion engine composed of the same material | Ichiro Yoshida, Shunzo Yamaguchi, Naotaka Nakamura, Kenji Yagi | 1986-11-25 |
| 4556780 | Ceramic heater | Hitoshi Yoshida, Nobuei Ito, Kinya Atsumi | 1985-12-03 |
| 4549905 | Ceramic heater | Shunzo Yamaguchi, Takeshi Fukazawa | 1985-10-29 |
| 4505107 | Exhaust gas cleaning apparatus | Shunzo Yamaguchi, Takeshi Fukazawa | 1985-03-19 |
| 4499366 | Ceramic heater device | Hitoshi Yoshida, Nobuei Ito, Kinya Atsumi | 1985-02-12 |
| 4475029 | Ceramic heater | Hitoshi Yoshida, Shunzo Yamaguchi, Takeshi Fukazawa, Tomio Kumoi | 1984-10-02 |
| 4449039 | Ceramic heater | Takeshi Fukazawa, Shunzo Yamaguchi | 1984-05-15 |