Yasutaka Nagai
16Patents
8h-index
47Co-inventors
72Inventor score
Filing activity: Mar 12, 1975 → May 6, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5662116A | Multi-plane electronic scan ultrasound probe | Human Necessities | 146 | Expired |
| US5469852A | Ultrasound diagnosis apparatus and probe therefor | Human Necessities | 70 | Expired |
| US6133185A | Exhaust gas purifying catalyst | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5300355A | Vibration damping material | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4676106A | Ultrasonic transducer | Human Necessities | 16 | Expired |
| US7247597B2 | Composite oxide, process for producing the same, and exhaust gas reducing co-catalyst | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US8105561B2 | Catalyst for purification of exhaust gas, regeneration method for the catalyst, and apparatus and method for purification of exhaust gas using the catalyst | Emerging Cross-Sectional Technologies | 11 | Active |
| US3983239A | Hexahydro-.gamma.-carboline derivatives and their salts | Chemistry; Metallurgy | 10 | Expired |
| US4237135A | 2-(4-Ethyl-1-piperazinyl)-4-phenylquinoline, process for preparation thereof, and composition thereof | Human Necessities | 6 | Expired |
| US4238620A | Dibenz[b,f]oxepin and dibenzo[b,f]thiepin derivatives, process for preparation thereof, method of using the same, and compositions thereof | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8389435B2 | Metal oxide catalyst carrier particle and exhaust gas purification catalyst | Emerging Cross-Sectional Technologies | 3 | Active |
| US8601794B2 | Apparatus and method for regenerating catalyst for purifying exhaust gas | Emerging Cross-Sectional Technologies | 1 | Active |
| US9951670B2 | Exhaust gas purification apparatus of internal combustion engine | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US8225601B2 | Exhaust gas purification system for internal combustion engine | Emerging Cross-Sectional Technologies | 0 | Active |
| US9005558B2 | Method and apparatus for exhaust gas control of an internal combustion engine | Emerging Cross-Sectional Technologies | 0 | Active |
| US4256753A | 4-(2-Pyridylamino)phenylacetic acid derivatives | Human Necessities | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.