Hiroaki Sudo
91Patents
15h-index
33Co-inventors
84Inventor score
Filing activity: Dec 1, 1988 → Aug 21, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6625111B1 | OFDM communication apparatus | Electricity | 82 | Expired |
| US6714511B1 | OFDM transmission/reception apparatus having a guard interval length changing function | Electricity | 56 | Expired |
| US6937557B1 | OFDM communication apparatus | Electricity | 54 | Expired |
| US6345036B1 | OFDM transmitting/receiving device and method | Electricity | 46 | Expired |
| US7463577B2 | OFDM communication method and OFDM communication device | Electricity | 45 | Expired |
| US6044254A | Receiving circuit | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4909645A | Pivotable support enabling paper insertion in a recording apparatus | Performing Operations; Transporting | 24 | Expired |
| US6456677B1 | Synchronization equipment | Electricity | 24 | Expired |
| US6747945B2 | OFDM transmitting and receiving apparatus and OFDM transmitting and receiving method | Electricity | 20 | Expired |
| US6909718B1 | Transmission-reception apparatus and method for performing error control | Electricity | 19 | Expired |
| US7106689B1 | OFDM transmission/reception apparatus | Electricity | 18 | Expired |
| US5276527A | Compact portable recording apparatus with thin, flat case, and which receives recording paper on an upper surface thereof | Electricity | 17 | Expired |
| US6839335B1 | Radio communication apparatus and radio communication method | Electricity | 17 | Expired |
| US7826871B2 | Transmission apparatus and transmission method | Electricity | 16 | Active |
| US6584092B1 | Apparatus and method for OFDM communication | Electricity | 16 | Expired |
| US8102831B2 | Radio transmitting apparatus and method for transmitting OFDM signals from different antennas according to the degree of multiplexing | Electricity | 15 | Expired |
| US6104764A | Radio receiving apparatus for receiving communication signals of different bandwidths | Electricity | 15 | Expired |
| US7161895B1 | OFDM-CDMA communication terminal apparatus and method | Electricity | 15 | Expired |
| US6584305B1 | Direct conversion radio receiving system using digital signal processing for channel filtering and down conversion to base band | Electricity | 14 | Expired |
| US6647025B1 | OFDM reception apparatus | Electricity | 14 | Expired |
| US6026129A | Radio receiving apparatus for receiving communication signals of different bandwidths | Electricity | 13 | Expired |
| US6208701A | Synchronizing apparatus | Electricity | 13 | Expired |
| US7298722B2 | Radio transmission apparatus and radio transmission method | Electricity | 13 | Expired |
| US7646702B2 | OFDM communication apparatus | Electricity | 13 | Expired |
| US6307897A | Radio receiving apparatus for receiving communication signals of different bandwidths | Electricity | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.