Ryozo Kayama
16Patents
4h-index
26Co-inventors
56Inventor score
Filing activity: May 24, 2004 → Mar 27, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6857415B2 | Control system for internal combustion engine | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US8413497B2 | Abnormality diagnostic device of internal combustion engine with turbocharger | Emerging Cross-Sectional Technologies | 16 | Active |
| US10234420B2 | Gas sensor control device | Emerging Cross-Sectional Technologies | 11 | Active |
| US7195000B2 | Fuel injector designed to optimize pattern of fuel spray | Emerging Cross-Sectional Technologies | 7 | Expired |
| US8051641B2 | Exhaust gas purifying apparatus for internal combustion engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US10634643B2 | Gas sensor control device | Emerging Cross-Sectional Technologies | 1 | Active |
| US11054388B2 | Gas sensor control device | Physics | 1 | Active |
| US11092099B2 | Control apparatus | Physics | 0 | Active |
| US11774403B2 | Gas sensor control device | Emerging Cross-Sectional Technologies | 0 | Active |
| US10690028B2 | Abnormality detection device for engine system detecting an abnormality in a fuel vapor pipe | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11249043B2 | Control device for gas sensor | Physics | 0 | Active |
| US9222379B2 | Electric control device | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10564120B2 | Gas concentration detection device | Physics | 0 | Active |
| US10174698B2 | Heater control device for exhaust gas sensor | Physics | 0 | Active |
| US11035283B2 | Control apparatus | Emerging Cross-Sectional Technologies | 0 | Active |
| US11428663B2 | Gas sensor control device | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.