Yutaka Murakami
773Patents
27h-index
117Co-inventors
93Inventor score
Filing activity: Dec 19, 1980 → May 1, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5210738A | Optical information recording medium | Emerging Cross-Sectional Technologies | 78 | Expired |
| US5781351A | Mounting structure of objective lens for optical pick-up used for optical disk device | Electricity | 74 | Expired |
| US7130587B2 | Communication quality estimation method, communication quality estimation apparatus, and communication system | Electricity | 71 | Expired |
| US5675570A | Optical disc having indication portion | Physics | 70 | Expired |
| US6608868B1 | Apparatus and method for digital wireless communications | Electricity | 54 | Expired |
| US6993092B1 | Transmission apparatus, reception apparatus and digital radio communication method | Electricity | 53 | Expired |
| US5748607A | Optical disc having large display patterns and its manufacturing apparatus | Physics | 49 | Expired |
| US6738430B2 | Apparatus and method for digital wireless communications | Electricity | 43 | Expired |
| US7688901B2 | Transmission method, transmission apparatus, and reception apparatus | Electricity | 41 | Active |
| US7266167B2 | Reception apparatus | Electricity | 40 | Expired |
| US7359454B2 | Apparatus and method for digital wireless communications | Electricity | 37 | Expired |
| US6748023B2 | Apparatus and method for digital wireless communications | Electricity | 37 | Expired |
| US8971432B2 | Signal generating method and signal generating device | Emerging Cross-Sectional Technologies | 36 | Active |
| US8831134B2 | Transmission method, transmission device, reception method, and reception device | Electricity | 36 | Active |
| US9374141B2 | Signal generation method, transmission device, reception method, and reception device | Electricity | 34 | Active |
| US7420915B2 | Radio communications apparatus and radio communications method | Electricity | 34 | Expired |
| US8842772B2 | Pre-coding method and transmitter | Electricity | 33 | Active |
| US7069489B2 | Transmission apparatus, reception apparatus, transmission method, and reception method | Emerging Cross-Sectional Technologies | 33 | Expired |
| USD635281S1 | Light emitting diode lamp | General | 33 | Expired |
| US7778339B2 | Transmission of a plurality of sub-carriers in an OFDM signal | Electricity | 32 | Active |
| US8638879B2 | Transmission method and transmission apparatus | Electricity | 31 | Active |
| US7359457B2 | Transmission apparatus, reception apparatus and digital radio communication method | Electricity | 31 | Expired |
| US5762744A | Method of producing a semiconductor device using an expand tape | Emerging Cross-Sectional Technologies | 29 | Expired |
| US10411769B2 | Signal generation method and signal generation device | Electricity | 28 | Active |
| US5843626A | Method for manufacturing a master disc for optical discs | Emerging Cross-Sectional Technologies | 27 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.