Hajime Hamada
73Patents
16h-index
34Co-inventors
84Inventor score
Filing activity: Nov 23, 1979 → May 19, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6028894A | SIR or SNR measurement apparatus | Electricity | 86 | Expired |
| US6097714A | Code multiplexing transmitting apparatus | Electricity | 55 | Expired |
| US6826169B1 | Code multiplexing transmitting apparatus | Electricity | 41 | Expired |
| US6041034A | Spread spectrum communication system | Electricity | 39 | Expired |
| US6552609B2 | Signal distortion compensating apparatus and method | Electricity | 39 | Expired |
| US6853631B1 | Code-division multiplex communication transmitting apparatus and receiving apparatus and method thereof | Electricity | 38 | Expired |
| US6009090A | Code multiplexing wireless apparatus | Electricity | 33 | Expired |
| US6058138A | Radio reception system providing improved transmission quality | Electricity | 32 | Expired |
| US6980604B2 | Transmission device and transmission method | Electricity | 30 | Expired |
| US6563859B1 | Receiver and receiving method in multi-carrier spread-spectrum communications | Electricity | 29 | Expired |
| US7012969B2 | Distortion compensating apparatus | Electricity | 27 | Expired |
| US6496474B1 | Spread encoding device and method | Electricity | 25 | Expired |
| US6442218B1 | Demodulator | Electricity | 24 | Expired |
| US6907085B2 | Activation method of communications apparatus with a non-linear distortion compensation device | Electricity | 24 | Expired |
| US7106249B2 | Phase calibration method and apparatus | Electricity | 23 | Expired |
| US6757525B1 | Distortion compensating apparatus | Electricity | 21 | Expired |
| US6717464B2 | Distortion compensating apparatus | Electricity | 16 | Expired |
| US6864745B2 | Distortion compensation device | Electricity | 16 | Expired |
| US6359875B1 | CDMA receiving apparatus | Electricity | 16 | Expired |
| US6864839B2 | Radio transceiver and method of controlling direction of radio-wave emission | Electricity | 15 | Expired |
| US7551905B2 | Distortion compensation apparatus | Electricity | 14 | Expired |
| US6650689B1 | Correlator and delay lock loop circuit | Electricity | 11 | Expired |
| US7106133B2 | Distortion compensator | Electricity | 11 | Expired |
| US6487193B1 | Path searched device and CDMA receiver with the same | Electricity | 11 | Expired |
| US7551687B2 | Distortion compensating apparatus | Electricity | 10 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.