Hisao Yamashita
44Patents
15h-index
72Co-inventors
84Inventor score
Filing activity: Feb 1, 1978 → Jun 24, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6045764A | Exhaust gas purifying method and catalyst used therefor | Emerging Cross-Sectional Technologies | 58 | Expired |
| US6161378A | Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas internal combustion engine | Emerging Cross-Sectional Technologies | 51 | Expired |
| US4537873A | Catalyst for catalytic combustion | Performing Operations; Transporting | 49 | Expired |
| US4178270A | Method for supporting hydrous metal oxide on carrier | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4738946A | High temperature stable catalyst and process for preparing same | Emerging Cross-Sectional Technologies | 40 | Expired |
| US4793797A | Method of catalytic combustion using heat-resistant catalyst | Performing Operations; Transporting | 29 | Expired |
| US5877391A | Method for treating gas containing organohalogen compounds, and catalyst for decomposing the organohalogen compounds | Performing Operations; Transporting | 28 | Expired |
| US5379586A | System for controlling oxygen concentration in exhaust gas and exhaust gas cleaning system employing the same | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5577383A | Apparatus for controlling internal combustion engine | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4925825A | Catalyst for removing nitrogen oxides | Performing Operations; Transporting | 23 | Expired |
| US6272848A | Exhaust gas cleaning apparatus and method for internal combustion engine | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US6630115B1 | Exhaust emission control process for internal combustion engines | Performing Operations; Transporting | 22 | Expired |
| US4906176A | High temperature stable catalyst, process for preparing same, and process for conducting chemical reaction using same | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5759504A | Method for treating organohalogen compounds with catalyst | Performing Operations; Transporting | 16 | Expired |
| US5968870A | Catalyst for purifying exhaust gas from internal combustion engine and purifying method thereof | Performing Operations; Transporting | 16 | Expired |
| US6077482A | Method for treating organohalogen compounds with catalyst | Performing Operations; Transporting | 14 | Expired |
| US4884396A | Desulfurizing agent and process for treating hydrogen sulfide containing gas, coal gasification system and power generation system based on coal gasification using the desulfurizing agent | Chemistry; Metallurgy | 13 | Expired |
| US6397582B1 | Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4946661A | Process for removing nitrogen oxides | Performing Operations; Transporting | 9 | Expired |
| US5972828A | Method of manufacturing catalyst for cleaning exhaust gas released from internal combustion engine, and catalyst for the same | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6305161A | Method of purifying exhaust gas of internal combustion engine and apparatus thereof | Performing Operations; Transporting | 7 | Expired |
| US5531184A | Method for producing synthetic diamond thin film, the thin film and device using it | Chemistry; Metallurgy | 7 | Expired |
| US7294315B1 | Method and apparatus for disposing of fluorine-containing compound by decomposition | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4865827A | Process for removing nitrogen oxides | Performing Operations; Transporting | 6 | Expired |
| US4631263A | Water-repellent catalyst for gas/liquid reactions and process for gas/liquid reactions by using the same | Performing Operations; Transporting | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.