Shin Ukegawa
16Patents
5h-index
38Co-inventors
66Inventor score
Filing activity: May 4, 1988 → Apr 23, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4864194A | Electrodeless discharge lamp device | Electricity | 28 | Expired |
| US5367226A | Electrodeless discharge lamp having a concave recess and foil electrode formed therein | Electricity | 20 | Expired |
| US5013975A | Electrodeless discharge lamp | Electricity | 19 | Expired |
| US5519285A | Electrodeless discharge lamp | Electricity | 18 | Expired |
| US5747945A | Electrodeless discharge lamp utilizing induced electric field generated by a high frequency electromagnetic field | Electricity | 6 | Expired |
| US6979958B2 | High efficacy metal halide lamp with praseodymium and sodium halides in a configured chamber | Electricity | 5 | Expired |
| US6121730A | Metal hydrides lamp and fill for the same | Electricity | 5 | Expired |
| US8432105B2 | Light control apparatus for lighting an organic electroluminescence device and lighting appliance using the same | Emerging Cross-Sectional Technologies | 4 | Active |
| US8138679B2 | Organic electroluminescent light emitting device for restoring normal operation after low-voltage errors | Emerging Cross-Sectional Technologies | 4 | Active |
| US8344651B2 | Light control apparatus and lighting appliance using the same | Emerging Cross-Sectional Technologies | 4 | Active |
| US8513898B2 | Light emitting device that restores abnormal light emitting element | Emerging Cross-Sectional Technologies | 1 | Active |
| US9041277B2 | Lighting device | Electricity | 1 | Active |
| US8089215B2 | Discharge lamp lighting device, headlight device and vehicle having the same | Electricity | 1 | Active |
| US8502471B2 | Planar light-emitting module lighting circuit and illuminating device | Emerging Cross-Sectional Technologies | 0 | Active |
| US7719173B2 | Electrodeless discharge lamp and lighting apparatus using the same | Electricity | 0 | Active |
| US8878441B2 | Display device and guide lamp including same | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.