Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5009210 | Air/fuel ratio feedback control system for lean combustion engine | Toyoaki Nakagawa, Hiroshi Sanbuichi, Makoto Saito | 1991-04-23 |
| 4942848 | Air-fuel ratio control system for automotive internal combustion engine or the like with fuel type discrimination capabilities | — | 1990-07-24 |
| 4870937 | Air fuel mixture A/F control system | Hiroshi Sanbuichi, Toyoaki Nakagawa | 1989-10-03 |
| 4782690 | Air/fuel ratio detecting apparatus, and method of detecting normal and abnormal conditions of the sensor | — | 1988-11-08 |
| 4729220 | Air/fuel ratio control system for lean combustion engine using three-way catalyst | Makoto Saitoh | 1988-03-08 |
| 4712529 | Air-fuel ratio control for transient modes of internal combustion engine operation | Hiroshi Sunbuichi, Toyoaki Nakagawa | 1987-12-15 |