Jun Kojima
24Patents
9h-index
40Co-inventors
75Inventor score
Filing activity: Aug 8, 1996 → Mar 23, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6573534B1 | Silicon carbide semiconductor device | Emerging Cross-Sectional Technologies | 150 | Expired |
| US6221700A | Method of manufacturing silicon carbide semiconductor device with high activation rate of impurities | Electricity | 72 | Expired |
| US6551865B2 | Silicon carbide semiconductor device and method of fabricating the same | Emerging Cross-Sectional Technologies | 60 | Expired |
| US7813406B1 | Temporal laser pulse manipulation using multiple optical ring-cavities | Performing Operations; Transporting | 46 | Active |
| US7365363B2 | Silicon carbide semiconductor device and method for manufacturing the same | Electricity | 37 | Expired |
| US6625442B1 | Mobile communication system having service sub-areas independently assigned special services | Electricity | 22 | Expired |
| US6272344A | Position registration method for mobile communications system | Electricity | 17 | Expired |
| US5886999A | Receiving apparatus and method of outputting received signal in multimedia communication | Electricity | 17 | Expired |
| US8310671B1 | Interference-free optical detection for Raman spectroscopy | Physics | 10 | Active |
| US6657827B1 | Head | Physics | 6 | Expired |
| USD941225S1 | Water vehicle | General | 5 | Active |
| US8995842B1 | Secured optical communications using quantum entangled two-photon transparency modulation | Electricity | 4 | Active |
| US8612794B2 | Clock signal generating device and electronic device | Electricity | 3 | Active |
| US8591654B2 | Device for manufacturing sic single crystal and method for the same | Emerging Cross-Sectional Technologies | 2 | Active |
| US9325209B2 | Rotating electrical machine and manufacturing method of rotor | Emerging Cross-Sectional Technologies | 2 | Active |
| USD911217S1 | Unmanned ground vehicle | General | 1 | Active |
| US7968892B2 | Silicon carbide semiconductor device | Electricity | 1 | Active |
| US8882911B2 | Apparatus for manufacturing silicon carbide single crystal | Emerging Cross-Sectional Technologies | 1 | Active |
| US9130429B2 | Rotating electrical machine | Electricity | 1 | Active |
| US11810821B2 | Semiconductor chip and method for manufacturing the same | Performing Operations; Transporting | 0 | Active |
| US11810783B2 | Gallium nitride semiconductor device and method for manufacturing the same | Electricity | 0 | Active |
| US12334339B2 | Manufacturing method of semiconductor device | Electricity | 0 | Active |
| US9053834B2 | Silicon carbide single crystal and manufacturing method of the same | Chemistry; Metallurgy | 0 | Active |
| US11784039B2 | Method for manufacturing gallium nitride semiconductor device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.