Yuji Ichikawa
16Patents
7h-index
36Co-inventors
62Inventor score
Filing activity: Jun 7, 1989 → Jul 14, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6090718A | Dry etching method for semiconductor substrate | Emerging Cross-Sectional Technologies | 58 | Expired |
| US5585952A | Communication apparatus automatically selecting one of two operation modes | Electricity | 26 | Expired |
| US5714408A | Method of forming silicon nitride with varied hydrogen concentration | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4947325A | Diagnostic system for rotational speed sensors in drive train of four wheels drive vehicle having central differential device | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5013888A | Self-cleaning plate shaped device | Electricity | 13 | Expired |
| US5684830A | Noise removing device and data communication apparatus using the same | Electricity | 11 | Expired |
| US6980616B1 | Transmission method and device | Electricity | 10 | Expired |
| US6804205B1 | Method and apparatus for transmitting packet for synchronization using half duplex transmission medium | Electricity | 7 | Expired |
| US7177283B2 | Transmitting and receiving circuit and transmitting and receiving method | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6554490B1 | Electronic apparatus having communication function using detachable communication cable, capable of reducing power consumption and stable operation | Electricity | 7 | Expired |
| US6802030B2 | Data transfer method | Electricity | 6 | Expired |
| US5783772A | Leakage radiation preventing element | Electricity | 6 | Expired |
| US7374427B2 | Coaxial cable distributor | Electricity | 5 | Expired |
| US6137156A | Semiconductor device employing silicon nitride layers with varied hydrogen concentration | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7333518B2 | Transmission method and transmission system as well as communications device | Electricity | 3 | Expired |
| US7394771B2 | Apparatus and method for data communication including establishing communication using tone signal | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.