Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5728932 | Method for diagnosing performance of intake air amount detection device and apparatus thereof | — | 1998-03-17 |
| 5702522 | Method of operating a growing hall containing puller cells | Kazuo Sakauchi, Yoshihiro Hirano | 1997-12-30 |
| 5671720 | Apparatus and method for controlling air-fuel ratio of an internal combustion engine | — | 1997-09-30 |
| 5641354 | Puller cell | Kazuo Sakauchi, Yoshihiro Hirano | 1997-06-24 |
| 5619852 | Air/fuel ratio control system for internal combustion engine | — | 1997-04-15 |
| 5598702 | Method and apparatus for controlling the air-fuel ratio of an internal combustion engine | — | 1997-02-04 |
| 5582157 | Fuel property detecting apparatus for internal combustion engines | — | 1996-12-10 |
| 5568725 | Apparatus and method for controlling the air-fuel ratio of an internal combustion engine | — | 1996-10-29 |
| 5549080 | Apparatus and method for diagnosing occurrence of failure in variable valve timing control system for internal combustion engine | — | 1996-08-27 |
| 5546921 | Air-fuel ratio control system | — | 1996-08-20 |
| 5533332 | Method and apparatus for self diagnosis of an internal combustion engine | — | 1996-07-09 |
| 5505184 | Method and apparatus for controlling the air-fuel ratio of an internal combustion engine | — | 1996-04-09 |
| 5450837 | Apparatus and method for controlling the air-fuel ratio of an internal combustion engine | — | 1995-09-19 |
| 5402640 | Air-fuel ratio control system of internal combustion engine | — | 1995-04-04 |
| 5006221 | Oxygen concentration-detecting apparatus | Satoshi Anbe, Masami Kawashima, Tatsumasa Yamada, Tadao Suwa | 1991-04-09 |
| 4957705 | Oxygen gas concentration-detecting apparatus | — | 1990-09-18 |
| 4956208 | Manufacture of a quartz glass vessel for the growth of single crystal semiconductor | Atsushi Iwasaki, Toshio Fukuoka, Mitsuo Matsumura, Hiroshi Matsui, Yasuhiko Sato +4 more | 1990-09-11 |
| 4935046 | Manufacture of a quartz glass vessel for the growth of single crystal semiconductor | Atsushi Iwasaki, Toshio Fukuoka, Mitsuo Matsumura, Hiroshi Matsui, Yasuhiko Sato +4 more | 1990-06-19 |
| 4915080 | Electronic air-fuel ratio control apparatus in internal combustion engine | Shinpei Nakaniwa | 1990-04-10 |
| 4878473 | Internal combustion engine with electronic air-fuel ratio control apparatus | Shinpei Nakaniwa | 1989-11-07 |
| 4854288 | Air-fuel ratio control apparatus in internal combustion engine | — | 1989-08-08 |
| 4773376 | Oxygen gas concentration-detecting apparatus and air-fuel ratio-controlling apparatus using same in internal combustion engine | Satoshi Anbe, Masami Kawashima, Tatsumasa Yamada, Tadao Suwa | 1988-09-27 |