Masayasu Ito
149Patents
17h-index
107Co-inventors
89Inventor score
Filing activity: Sep 17, 1991 → Aug 13, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7164235B2 | Vehicular lamp | Emerging Cross-Sectional Technologies | 85 | Expired |
| US6362577B1 | Discharge lamp lighting circuit | Electricity | 41 | Expired |
| US8105169B2 | Portable electronic device | Human Necessities | 36 | Expired |
| US6847169B2 | Lighting circuit | Electricity | 31 | Expired |
| US5723510A | Method of manufacturing thermoplastic polyester foam sheet | Chemistry; Metallurgy | 29 | Expired |
| US7741788B2 | Light emitting apparatus with current limiting | Electricity | 27 | Active |
| US7352135B2 | Lighting controller for lighting device for vehicle | Electricity | 26 | Active |
| US7237935B2 | Light source module and vehicular lamp | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US5224534A | Method of producing refractory metal or alloy materials | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US7482765B2 | Lighting control apparatus of lighting device for vehicle | Emerging Cross-Sectional Technologies | 24 | Active |
| US5844731A | Light reflecting plate | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6583587B2 | Discharge lamp lighting circuit | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7327051B2 | Lighting control circuit for vehicle lamps | Emerging Cross-Sectional Technologies | 20 | Active |
| US7479743B2 | Vehicle lighting apparatus | Emerging Cross-Sectional Technologies | 20 | Active |
| US7528553B2 | Lighting control apparatus for vehicle lighting device | Electricity | 19 | Active |
| US6873111B2 | Vehicular lamp | Emerging Cross-Sectional Technologies | 18 | Expired |
| USD688636S1 | Switch | General | 17 | Active |
| US7244036B2 | Vehicular lamp | Electricity | 17 | Expired |
| US7291989B2 | Lighting control circuit for vehicle lighting equipment | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6844681B2 | Vehicle light apparatus | Electricity | 14 | Expired |
| US8947017B2 | Semiconductor light source lighting circuit | Electricity | 13 | Active |
| US6654684B2 | Navigation apparatus and method that performs route guiding to a provider location | Physics | 13 | Expired |
| US6417624B1 | Lighting system for vehicle | Performing Operations; Transporting | 13 | Expired |
| US6617808B2 | Discharge-lamp lighting circuit | Electricity | 12 | Expired |
| US7116052B2 | Vehicular lamp | Electricity | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.