Kohei Yoshida
119Patents
13h-index
94Co-inventors
89Inventor score
Filing activity: Aug 28, 1996 → Nov 22, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6273955A | Film forming apparatus | Emerging Cross-Sectional Technologies | 29 | Expired |
| US7111456B2 | Exhaust emission control apparatus for internal combustion engine | Emerging Cross-Sectional Technologies | 26 | Expired |
| US7146800B2 | Exhaust purification device and exhaust purification method of internal combustion engine | Emerging Cross-Sectional Technologies | 26 | Expired |
| US8689543B2 | Exhaust purification system of internal combustion engine | Emerging Cross-Sectional Technologies | 22 | Active |
| US8656706B2 | Exhaust purification system of internal combustion engine | Emerging Cross-Sectional Technologies | 21 | Active |
| US8572950B2 | Exhaust purification system of internal combustion engine | Emerging Cross-Sectional Technologies | 21 | Active |
| US6350489B1 | Deposited-film forming process and deposited-film forming apparatus | Chemistry; Metallurgy | 21 | Expired |
| US8671667B2 | Exhaust purification system of internal combustion engine | Emerging Cross-Sectional Technologies | 21 | Active |
| US8695325B2 | Exhaust purification system of internal combustion engine | Emerging Cross-Sectional Technologies | 21 | Active |
| US8679410B2 | Exhaust purification system of internal combustion engine | Mechanical Engineering; Lighting; Heating | 21 | Active |
| USD928122S1 | Earphone | General | 16 | Active |
| US6113732A | Deposited film forming apparatus | Chemistry; Metallurgy | 16 | Expired |
| US8820054B2 | Exhaust purification system of internal combustion engine | Emerging Cross-Sectional Technologies | 14 | Active |
| US6338872B1 | Film forming method | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6956008B2 | Storage-reduction type NOx purifying catalyst | Performing Operations; Transporting | 13 | Expired |
| USD936034S1 | Earphone | General | 10 | Active |
| US7393808B2 | Particulate matter-oxidizing material and oxidizing catalyst | Chemistry; Metallurgy | 9 | Expired |
| US9947464B2 | Method of manufacturing laminated core | Electricity | 4 | Active |
| US8209954B2 | Exhaust purification device of an internal combustion engine | Emerging Cross-Sectional Technologies | 4 | Active |
| US6955041B2 | Exhaust gas purifying apparatus for internal combustion engine | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9175590B2 | Exhaust purification system of internal combustion engine | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US7181904B2 | Exhaust purification device of compression ignition type internal combustion engine | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8156787B2 | Device for detection of sulfur concentration in fuel or oil | Emerging Cross-Sectional Technologies | 4 | Active |
| US8104271B2 | Exhaust purification device and exhaust purification method of internal combustion engine | Emerging Cross-Sectional Technologies | 3 | Active |
| US8206671B2 | Porous composite oxide and production method thereof | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.