Hirohito Hirata
29Patents
6h-index
51Co-inventors
72Inventor score
Filing activity: Dec 5, 1997 → Apr 30, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7481043B2 | Plasma injector, exhaust gas purifying system and method for injecting reducing agent | Emerging Cross-Sectional Technologies | 43 | Expired |
| US7954313B2 | Exhaust cleaner for internal combustion engine | Emerging Cross-Sectional Technologies | 18 | Active |
| US6440378B1 | Catalyst for purifying exhaust gases, a method of producing the same, and a method of purifying exhaust gases | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6165429A | Exhaust gas purifying catalyst and exhaust gas purifying method | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7582586B2 | Supported catalysts with controlled metal cluster size | Performing Operations; Transporting | 10 | Active |
| US7820585B2 | Metal cluster-carrying metal oxide support and process for production thereof | Emerging Cross-Sectional Technologies | 8 | Active |
| US7510600B2 | Gas purifying apparatus | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US7475533B2 | Exhaust gas purifying apparatus and method for controlling it | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7514047B2 | Exhaust gas purifying apparatus | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US8191353B2 | Device and method for controlling internal combustion engine | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8011181B2 | Exhaust gas cleaning catalyst, exhaust gas cleaning device, and system comprising internal combustion engine | Emerging Cross-Sectional Technologies | 3 | Active |
| US9751075B2 | Ceria-zirconia complex oxide material and method for producing same | Chemistry; Metallurgy | 2 | Active |
| US8104272B2 | Exhaust purifying system for internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Active |
| US9084988B2 | NOX purification catalyst | Performing Operations; Transporting | 1 | Active |
| US9358527B2 | Exhaust gas purification catalyst and production method thereof | Emerging Cross-Sectional Technologies | 1 | Active |
| US7468171B2 | Process using microwave energy and a catalyst to decompose nitrogen oxides | Performing Operations; Transporting | 1 | Active |
| US9079167B2 | NOx purification catalyst | Performing Operations; Transporting | 1 | Active |
| US9126846B2 | Method of synthesizing metal composite oxide and metal composite oxide obtained by same | Chemistry; Metallurgy | 1 | Active |
| US7946111B2 | Apparatus and method for PM purification | Emerging Cross-Sectional Technologies | 1 | Active |
| US7299624B2 | Exhaust gas purifying apparatus and method thereof | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7981389B2 | Process using microwave energy and a catalyst to crack hydrocarbons | Emerging Cross-Sectional Technologies | 1 | Active |
| US8921259B2 | Exhaust gas purification catalyst for removing CO or HC, and method for manufacturing same | Performing Operations; Transporting | 0 | Active |
| US8236094B2 | Exhaust gas purifying device | Emerging Cross-Sectional Technologies | 0 | Active |
| US8051643B2 | Exhaust gas purification system utilizing ozone | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US7829492B2 | Microwave assisted desulfurization of nitrogen oxide storage reduction catalysts | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.