Takuya Aoki
52Patents
17h-index
78Co-inventors
87Inventor score
Filing activity: May 5, 1992 → Mar 29, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5325664A | System for determining deterioration of catalysts of internal combustion engines | Emerging Cross-Sectional Technologies | 105 | Expired |
| US5544482A | Exhaust gas-purifying system for internal combustion engines | Emerging Cross-Sectional Technologies | 78 | Expired |
| US5555725A | Control system for electrically heated catalyst of internal combustion engine | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6790379B2 | Magnetic ferrite composition and process of production thereof | Chemistry; Metallurgy | 30 | Expired |
| US8342912B2 | Abrasive water jet processing machine | Performing Operations; Transporting | 28 | Active |
| US5852929A | Failure detection system of exhaust secondary air supply system of internal combustion engine | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5634331A | Exhaust gas-purifying device for internal combustion engines | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5499501A | Engine exhaust emission control system | Emerging Cross-Sectional Technologies | 22 | Expired |
| US8282853B2 | NiMnZn based ferrite | Electricity | 21 | Active |
| US5740675A | Exhaust system ambient temperature detection system for internal combustion engine | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5713198A | Exhaust gas-purifying device for internal combustion engines | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5758492A | Failure detection system of electrically heated catalytic converter of internal combustion engine | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5501073A | Ignition timing control system for internal combustion engines | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5782086A | Failure detection system of exhaust secondary air supply system of internal combustion engine | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5467594A | Exhaust gas-purifying system for internal combustion engines | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5216880A | Catalytic converter heater control system for internal combustion engine | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5388402A | Secondary air supply control system for internal combustion engines | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6031213A | Electrode structure and electric heater comprising the same | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5784878A | Idle speed control system of internal combustion engine | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5584177A | Adsorber temperature-estimating device for internal combustion engines and exhaust gas-purifying system using same | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6028353A | Chip bead element and manufacturing method thereof | Electricity | 14 | Expired |
| US5531203A | Catalyst activating system in multi-cylinder internal combustion engine | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5689952A | Exhaust gas-purifying system for internal combustion engines | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5732550A | Current supply control system of electrically heated catalytic converter of internal combustion engine | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6736990B2 | Ferrite material | Chemistry; Metallurgy | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.