Akihisa Okumura
7Patents
3h-index
12Co-inventors
50Inventor score
Filing activity: Dec 11, 1997 → May 1, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6214307A | Exhaust gas purifying catalyst and exhaust gas purifying method | Emerging Cross-Sectional Technologies | 13 | Expired |
| US8722001B2 | Catalyst for purification of exhaust gas and method for purification using the same | Emerging Cross-Sectional Technologies | 5 | Active |
| US7981834B2 | Adsorbent for hydrocarbons, catalyst for exhaust gas purification and method for exhaust gas purification | Emerging Cross-Sectional Technologies | 4 | Active |
| US9404406B2 | Catalyst for use in a process for purifying exhaust gas from gasoline engines of a fuel-direct-injection type | Emerging Cross-Sectional Technologies | 0 | Active |
| US8318630B2 | Catalyst for removing nitrogen oxides and method for removing nitrogen oxides using the same | Emerging Cross-Sectional Technologies | 0 | Active |
| US8938953B2 | Exhaust gas purifying method | Emerging Cross-Sectional Technologies | 0 | Active |
| US8263009B2 | Exhaust gas purifying catalyst | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.