Shigeyuki Sudo
19Patents
8h-index
25Co-inventors
68Inventor score
Filing activity: Feb 12, 1991 → Sep 25, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5450613A | Mobile communications equipment which detects and notifies when it is moved into or out of a service area | Electricity | 143 | Expired |
| US5493710A | Communication system having oscillation frequency calibrating function | Electricity | 52 | Expired |
| US6625202B1 | Mobile station for spread spectrum communication | Electricity | 18 | Expired |
| US5778314A | Speech message recording and reproducing method and apparatus | Electricity | 16 | Expired |
| US5361047A | PI/4 shift QPSK modulator and communication apparatus used therewith | Electricity | 12 | Expired |
| US6363101B1 | Receiver for receiving a spectrum dispersion signal | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5210775A | .pi./4 shift QPSK modulator and communication apparatus | Electricity | 11 | Expired |
| US7035309B2 | Receiver for receiving a spectrum dispersion signal | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7953406B2 | Access point | Electricity | 6 | Active |
| US7397777B1 | Handoff control method and a mobile station employing the same | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5696792A | Digital radiocommunication terminal | Electricity | 5 | Expired |
| US7471715B2 | Receiver for receiving a spectrum dispersion signal | Emerging Cross-Sectional Technologies | 3 | Active |
| US7865195B2 | Mobile communication terminal and position monitoring method | Emerging Cross-Sectional Technologies | 3 | Active |
| US7400667B2 | Receiver for receiving a spectrum dispersion signal | Emerging Cross-Sectional Technologies | 2 | Active |
| US7447256B2 | Receiver for receiving a spectrum dispersion signal | Emerging Cross-Sectional Technologies | 1 | Active |
| US8130816B2 | Receiver for receiving a spectrum dispersion signal | Emerging Cross-Sectional Technologies | 1 | Active |
| US7269203B2 | Receiver for receiving a spectrum dispersion signal | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7606198B2 | Handoff control method and a mobile station employing the same | Emerging Cross-Sectional Technologies | 0 | Active |
| US8477722B2 | Handoff control method and a mobile station employing the same | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.