Koji Yokota
27Patents
14h-index
78Co-inventors
84Inventor score
Filing activity: Jun 14, 1976 → Feb 19, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5272871A | Method and apparatus for reducing nitrogen oxides from internal combustion engine | Emerging Cross-Sectional Technologies | 207 | Expired |
| US5412946A | NOx decreasing apparatus for an internal combustion engine | Emerging Cross-Sectional Technologies | 152 | Expired |
| US5270024A | Process for reducing nitrogen oxides from exhaust gas | Emerging Cross-Sectional Technologies | 99 | Expired |
| US5441401A | Method of decreasing nitrogen oxides in combustion device which performs continuous combustion, and apparatus therefor | Emerging Cross-Sectional Technologies | 62 | Expired |
| US5543124A | Process for reducing nitrogen oxides | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US5783160A | Method for purifying combustion exhaust gas | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6133185A | Exhaust gas purifying catalyst | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5804152A | Method for purifying exhaust gases | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5433933A | Method of purifying oxygen-excess exhaust gas | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4447871A | Data communication system with a front-end-processor | Physics | 21 | Expired |
| USD652710S1 | Cord adjuster | General | 17 | Expired |
| US5474745A | Catalytic converter for purifying exhaust gas | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4617794A | Exhaust gas purifying method and apparatus for internal combustion engines | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| USD630090S1 | Cord lock | General | 14 | Expired |
| USD630502S1 | Cord lock | General | 14 | Expired |
| US5575983A | Catalyst for purifying exhaust gases and process for purifying exhaust gases | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5975758A | Method and sensor for detecting thermal history | Physics | 13 | Expired |
| US4097805A | Frequency-synthesizer type transceiver | Electricity | 12 | Expired |
| US5352337A | Method for reducing nitrogen oxides | Performing Operations; Transporting | 9 | Expired |
| US5795992A | Method of testing durability of exhaust gas purification device | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8294576B2 | Infrared sensor switch | Emerging Cross-Sectional Technologies | 5 | Active |
| US5722238A | Device for evaluating catalyst performance deterioration | Emerging Cross-Sectional Technologies | 4 | Expired |
| USD680855S1 | Cord lock | General | 4 | Active |
| US8475921B2 | Composite material, composite material substrate, composite material dispersed fluid, and manufacturing methods thereof | Emerging Cross-Sectional Technologies | 3 | Active |
| US5698988A | Method and device of detecting a deterioration | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.