Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6344134 | Method for measuring NOx concentration and NOx concentration sensor | Noboru Ishida, Toshitaka Matsuura, Yoshiro Noda, Nobuhiro Hayakawa, Norihiko Nadanami +4 more | 2002-02-05 |
| 6120677 | Temperature control for all range oxygen sensor | Takeshi Kawai, Yuji Oi, Shigeki Mori, Satoshi Teramoto, Toshiya Matsuoka | 2000-09-19 |
| 6099717 | Method of and apparatus for detecting a deteriorated condition of a wide range air-fuel ratio sensor | Takeshi Kawai, Yuji Oi, Shigeki Mori, Satoshi Teramoto, Toshiya Matsuoka | 2000-08-08 |
| 6010366 | Mold-type electronic part-containing connector | Fumiyoshi Tanigawa, Yoshihide Kami | 2000-01-04 |
| 5976350 | Method of and apparatus for detecting an activated condition of a wide range air-fuel ratio sensor | Takeshi Kawai, Yuji Oi, Shigeki Mori, Satoshi Teramoto, Toshiya Matsuoka | 1999-11-02 |
| 5700367 | Method and apparatus for controlling the energizing of a heater in an oxygen sensor | Katsuhisa Yabuta, Takeshi Kawai, Hideki Toyoda | 1997-12-23 |
| 5433830 | Method of activating zirconia oxygen sensor | Takeshi Kawai, Nobuhiro Hayakawa | 1995-07-18 |
| 5357750 | Method for detecting deterioration of catalyst and measuring conversion efficiency thereof with an air/fuel ratio sensor | Yasuo Ito, Nobuhiro Hayakawa | 1994-10-25 |
| 5288389 | Oxygen sensor with higher resistance to repeated thermal-shocks and shorter warm-up time | Akio Mizutani, Nobuhiro Hayakawa | 1994-02-22 |
| 5174885 | Air fuel ratio sensor | Nobuhiro Hayakawa | 1992-12-29 |
| 4932238 | Control system and method for controlling plant having high order lag | Hideji Yoshida, Nobuhiro Hayakawa, Akio Mizutani | 1990-06-12 |
| 4808269 | Method for controlling an oxygen concentration sensing device | Tomohiko Kawanabe, Masahiko Asakura, Noritaka Kushida, Hiroshi Hasebe | 1989-02-28 |