Yasuyuki Kojima
32Patents
11h-index
88Co-inventors
78Inventor score
Filing activity: Nov 18, 1975 → Jun 15, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6297618A | Power storage device and method of measuring voltage of storage battery | Physics | 56 | Expired |
| US6389063B1 | Signal transmission apparatus using an isolator, modem, and information processor | Electricity | 55 | Expired |
| US6603807B1 | Isolator and a modem device using the isolator | Electricity | 53 | Expired |
| US7523619B2 | Indoor and outdoor unit communication via signal from a power line | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US3984844A | Thermal recording apparatus | Electricity | 39 | Expired |
| US6611051B2 | Semiconductor device and communication terminal using thereof | Electricity | 35 | Expired |
| US4149171A | Thermal recording method | Physics | 19 | Expired |
| US6407432B1 | Semiconductor device | Electricity | 18 | Expired |
| US5259000A | Modulator-demodulator apparatus and system | Electricity | 17 | Expired |
| US4649401A | Thermal recording apparatus | Performing Operations; Transporting | 12 | Expired |
| US7091588B2 | Semiconductor device including primary and secondary side circuits on first and second substrates with capacitive insulation | Electricity | 11 | Expired |
| US5805312A | Thermographical image copier system with real time copying and variable read and record speeds | Electricity | 11 | Expired |
| US7334417B2 | Air conditioner and power line communication system | Electricity | 10 | Expired |
| US4597016A | Encoding/decoding system | Electricity | 10 | Expired |
| US6570343B1 | Device for turning on light and illumination apparatus | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6993765B2 | Controller and operating system | Physics | 9 | Expired |
| US5162838A | Facsimile apparatus and method for processing a fixed document | Electricity | 8 | Expired |
| US6853063B2 | Semiconductor device and communication terminal using thereof | Electricity | 6 | Expired |
| US6734641B2 | Device for turning on light and illumination apparatus | Emerging Cross-Sectional Technologies | 6 | Expired |
| USRE33632E | Encoding/decoding system | General | 6 | Expired |
| US6437825B1 | Image processing apparatus having plural image processors and apparatus which merges data to be input and output to the image processors | Electricity | 6 | Expired |
| US4074280A | Thermal recording apparatus | Physics | 5 | Expired |
| US7289553B2 | Isolator and a modem device using the isolator | Electricity | 5 | Expired |
| US6344809B1 | Line interface circuit and information communication apparatus using it | Electricity | 5 | Expired |
| US5555095A | Image signal processing apparatus | Electricity | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.