Inventor · Tokyo, JP

Yuji Shimada

38Patents
8h-index
57Co-inventors
78Inventor score

Filing activity: Jun 29, 1989 → Mar 24, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US4953253A Canister vacuum cleaner with automatic operation control Emerging Cross-Sectional Technologies 145 Expired
US7743739B2 Engine-driven generator Mechanical Engineering; Lighting; Heating 36 Expired
US5555621A Method of producing a catalytic converter Emerging Cross-Sectional Technologies 17 Expired
US7673589B2 Engine-driven work machine Mechanical Engineering; Lighting; Heating 14 Active
US7756422B2 Method for measuring optical characteristics and system thereof Electricity 11 Active
US8097997B2 Driving device with rotating electric machine Emerging Cross-Sectional Technologies 8 Active
US5038129A Electromagnetic having magnetic shield Physics 8 Expired
US8225690B2 Power transmission device Emerging Cross-Sectional Technologies 8 Active
US6992647B2 Organic EL drive circuit and organic EL display device using the same Electricity 8 Expired
US5410877A Manifold converter Mechanical Engineering; Lighting; Heating 7 Expired
US7756416B2 Optical communication node and optical network system Electricity 4 Expired
US9261545B2 Capacitance voltage conversion circuit, input apparatus using the same, electronic instrument, and capacitance voltage conversion method Electricity 3 Active
US7580631B2 Optical transmission device for controlling optical level of transmission signal in optical transmission system Electricity 3 Active
US7396013B2 Lottery device Human Necessities 3 Active
US7286758B2 Method for switching transmission route, and optical transmission device Electricity 3 Expired
US7471050B2 Organic EL drive circuit and organic EL display device Physics 2 Expired
US7551828B2 Optical transmission device for controlling optical level of transmission signal in optical transmission system Physics 2 Expired
US6987903B2 Optical transmission network, optical transmission apparatus, dispersion compensator arrangement calculation apparatus and dispersion compensator arrangement calculation method Electricity 2 Expired
US11092633B2 Capacitance detection circuit, semiconductor device, input device and electronic apparatus including the same, and method of detecting capacitance Electricity 1 Active
US11199932B2 Touch detection circuit with detection of water Physics 1 Active
US7394951B2 Optical signal level control apparatus Electricity 1 Expired
US11567603B2 Capacitance detection circuit and input device Physics 1 Active
US9697998B2 Mass spectrometer Electricity 1 Active
US8699506B2 Optical transmission apparatus and optical transmission method Electricity 1 Active
US8833329B2 Fastening structure of power unit Emerging Cross-Sectional Technologies 1 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.