Masahiro Izumi
38Patents
10h-index
74Co-inventors
78Inventor score
Filing activity: Sep 14, 1983 → Jul 10, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7690817B2 | Illumination device with semiconductor light-emitting elements | Electricity | 62 | Active |
| US5836061A | Cable end anchoring nipple and methods of constructing and utilizing same | Emerging Cross-Sectional Technologies | 26 | Expired |
| USD658599S1 | Light emitting diode module | General | 23 | Expired |
| US5181491A | Intake system in multi-cylinder type internal combustion engine | Emerging Cross-Sectional Technologies | 20 | Expired |
| US10348170B2 | Method for manufacturing a segmented laminated core | Electricity | 16 | Active |
| USD665518S1 | Light emitting diode module | General | 16 | Active |
| US6797367B2 | Multilayer wiring board, semiconductor device mounting board using same, and method of manufacturing multilayer wiring board | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5921143A | Coupling device for a sheathed cable and methods of constructing and utilizing same | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7934856B2 | Illumination device with semiconductor light-emitting elements | Electricity | 12 | Active |
| US7989840B2 | Illumination apparatus having a plurality of semiconductor light-emitting devices | Electricity | 12 | Active |
| US7022399B2 | Semiconductor device integrated multilayer wiring board | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5278422A | Normally open solid state relay with minimized response time of relay action upon being turned off | Electricity | 9 | Expired |
| US4605917A | Coil wire | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7053554B2 | Bulb-shaped fluorescent lamp and illumination device | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8167456B2 | Illumination device with semiconductor light-emitting elements | Electricity | 5 | Active |
| US8114178B2 | Polishing composition for semiconductor wafer and polishing method | Chemistry; Metallurgy | 4 | Active |
| US7753974B2 | Polishing composition for semiconductor wafer, method for production thereof and polishing method | Chemistry; Metallurgy | 4 | Active |
| US7334324B2 | Method of manufacturing multilayer wiring board | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8894254B2 | Luminaire and lamp apparatus housing | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US9948153B2 | Stacked core having a plurality of core pieces and a bridge portion | Emerging Cross-Sectional Technologies | 3 | Active |
| US8098003B2 | Light emitting module and illumination device | Electricity | 2 | Active |
| US7592742B2 | Fluorescent lamp, bulb-shaped fluorescent lamp, and lighting apparatus | Electricity | 2 | Active |
| US10252318B2 | Die apparatus and method for blanking thin plate | Performing Operations; Transporting | 2 | Active |
| US10630153B2 | Laminated core and method for manufacturing same | Electricity | 2 | Active |
| US6657389B2 | Glow discharge lamp, electrode thereof and luminaire | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.