Issued Patents All Time
Showing 51–74 of 74 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5214961 | Pressure sensor | Toshikatsu Yasuda, Katsuyoshi Mizumoto, Kanehisa Kitsukawa | 1993-06-01 |
| 5201228 | Pressure sensor | Kanehisa Kitsukawa, Toshikatsu Yasuda, Katsuyoshi Mizumoto | 1993-04-13 |
| 5189916 | Pressure sensor | Katsuyoshi Mizumoto, Kanehisa Kitsukawa, Toshikatsu Yasuda | 1993-03-02 |
| 5184529 | Tool for loosening or tightening spark plug | Yoshiaki Matsubara, Kouzou Amano | 1993-02-09 |
| 5160598 | Oxygen sensor for air-fuel ratio control having a protective layer including an oxygen storage material | Toshiki Sawada, Masaru Yamano, Kazuo Taguchi, Hiroyuki Ishiguro, Masahiko Yamada | 1992-11-03 |
| 5140881 | Apparatus for manufacturing a cylinder with a connected sleeve | Masaru Aizaki | 1992-08-25 |
| 5110442 | Reinforced electrolyte function elements | Hiroyuki Ishiguro, Yoshiki Kawachi, Tetsusyo Yamada | 1992-05-05 |
| 5069425 | Valve sleeve | Yukimitsu Minamibata | 1991-12-03 |
| 5047137 | Solid electrolyte air/fuel ratio sensor with voltage control | Tetsusyo Yamada, Hiroyuki Ishiguro, Yoshihide Kami | 1991-09-10 |
| 5020499 | Apparatus for detecting abnormality of oxygen sensor and controlling air/fuel ratio | Masaru Yamano, Toshiki Sawada | 1991-06-04 |
| 4956072 | Oxygen sensor | Yasuhiro UJITA | 1990-09-11 |
| 4896861 | Fluid control solenoid valve | — | 1990-01-30 |
| 4863584 | Apparatus for sensing air-fuel ratio | Hiroyuki Ishiguro, Yoshihide Kami | 1989-09-05 |
| 4840854 | Reinforced plate-like sintered bodies | Tetsusyo Yamada | 1989-06-20 |
| 4806739 | Plate-like ceramic heater | Hiroyuki Ishiguro, Yoshiki Kawachi, Tetsusyo Yamada | 1989-02-21 |
| 4785150 | Plate-like alumina heater | Nobuhiro Hayakawa, Yutaka Nakayama, Tetsusyo Yamada | 1988-11-15 |
| 4747930 | Air/fuel ratio sensor | Hiroyuki Ishiguro, Yoshihide Kami | 1988-05-31 |
| 4733056 | Heater backed with a ceramic substrate | Hiroyuki Ishiguro | 1988-03-22 |
| 4720394 | Gas sensor with ceramics substrate and method for producing the same | Akira Nakano, Toshitaka Matsuura, Akio Takami | 1988-01-19 |
| 4713166 | Pump cell element for air-fuel ratio sensor | Hiroyuki Ishiguro | 1987-12-15 |
| 4688015 | Gas sensor with ceramics substrate having surface-carried ceramics particles | Akira Nakano, Toshitaka Matsuura, Akio Takami | 1987-08-18 |
| 4629549 | Oxygen sensor | Yutaka Nakayama, Hiroyuki Ishiguro, Tetsusyo Yamada | 1986-12-16 |
| 4624770 | Air-fuel ratio sensor | Tetsusyo Yamada, Hiroyuki Ishiguro, Yutaka Nakayama | 1986-11-25 |
| 4477487 | Method of producing oxygen concentration cells | Naoto Naganuma | 1984-10-16 |