Yoshio Nakayama
25Patents
9h-index
55Co-inventors
78Inventor score
Filing activity: Jan 28, 1980 → Feb 19, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4611135A | Analog switch circuit and signal attenuator employing an analog switch circuit | Electricity | 40 | Expired |
| US7622092B2 | Method and device for removing mercury | Emerging Cross-Sectional Technologies | 37 | Active |
| US7544338B2 | Mercury removal system and mercury removal process | Emerging Cross-Sectional Technologies | 34 | Active |
| US6087774A | Non-electrode discharge lamp apparatus and liquid treatment apparatus using such lamp apparatus | Electricity | 20 | Expired |
| US5079852A | Sludge treating apparatus | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4814063A | Process for the preparation of super needle coke | Chemistry; Metallurgy | 12 | Expired |
| US5035802A | Membrane filter material having excellent organic solvent resistance, method for formation of membrane filter and process for preparation of bismaleimide polymer to be used for membrane filter | Chemistry; Metallurgy | 11 | Expired |
| US4623499A | Method for manufacture of shaped article of organic substance | Performing Operations; Transporting | 10 | Expired |
| US7581395B2 | Heat recovery equipment | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US4983717A | Membrane filter material having excellent organic solvent resistance, method for formation of membrane filter and process for preparation of bismaleimide polymer to be used for membrane filter | Chemistry; Metallurgy | 9 | Expired |
| US7992379B2 | Exhaust purification device for engine | Emerging Cross-Sectional Technologies | 9 | Active |
| US4476580A | Automatic continuous tuning control apparatus for a receiver | Electricity | 6 | Expired |
| US5641460A | Gas-liquid contactor and wet flue-gas desulfurization system | Performing Operations; Transporting | 6 | Expired |
| US4855037A | Hydrogenation catalyst for coal tar, a method of hydrogenation of coal tar with use of such catalyst, and a method of producing super needle coke from the hydrogenation product of coal tar | Chemistry; Metallurgy | 5 | Expired |
| US5902555A | Wet flue gas desulfurization process and system | Performing Operations; Transporting | 4 | Expired |
| US5958335A | Method and apparatus for preventing corrosion of exhaust gas treatment systems | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5879639A | Wet flue gas desulfurization system | Emerging Cross-Sectional Technologies | 2 | Expired |
| US10451108B2 | Squeeze film damper bearing device | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US9422844B2 | Exhaust purification device for engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US8099959B2 | Heat recovery equipment | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US4287417A | Method of determining the deterioration of heat-resistant ferritic steel parts | Physics | 1 | Expired |
| US8209985B2 | Heat recovery equipment | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US9989513B2 | Oil content measurement device | Physics | 0 | Active |
| US8003068B2 | Hydrogen chloride supply system, air pollution control system, and hydrogen chloride supply control system | Performing Operations; Transporting | 0 | Active |
| US7662352B2 | Method and system for removing mercury from flue gas | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.