Daisuke Akihisa
35Patents
5h-index
12Co-inventors
62Inventor score
Filing activity: Aug 4, 2004 → Nov 4, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7278383B2 | Internal combustion engine with variable compression ratio and valve characteristics | Emerging Cross-Sectional Technologies | 14 | Active |
| US7917279B2 | Method of controlling a mechanical compression ratio, a closing timing of an intake valve and air stream | Emerging Cross-Sectional Technologies | 8 | Active |
| US7047917B2 | Variable compression ratio mechanism | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US7997241B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 6 | Active |
| US7840335B2 | Internal combustion engine with variable compression ratio | Emerging Cross-Sectional Technologies | 6 | Active |
| US7882821B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 5 | Active |
| US7802543B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 5 | Active |
| US8229649B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 4 | Active |
| US8413618B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 3 | Active |
| US7627417B2 | Variable compression ratio internal combustion engine | Emerging Cross-Sectional Technologies | 3 | Active |
| US8234054B2 | Method of operating a spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 3 | Active |
| US7487747B2 | Mount apparatus for variable compression ratio internal combustion engine | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US7422004B2 | Internal combustion engine with variable compression ratio | Emerging Cross-Sectional Technologies | 2 | Active |
| US8646419B2 | Control apparatus for internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Active |
| US8352157B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Active |
| US8322315B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Active |
| US8695544B2 | High expansion ratio internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Active |
| US8109243B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Active |
| US8342143B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Active |
| US8136489B2 | Variable compression ratio internal combustion engine | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8011332B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US8555832B2 | Spark-ignited internal combustion engine and method of controlling the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US8656701B2 | Control device | Emerging Cross-Sectional Technologies | 1 | Active |
| US8276554B2 | Spark ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US8347834B2 | Spark-ignited internal combustion engine and method of controlling the same | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.