Ryuichi Fujimoto
16Patents
7h-index
35Co-inventors
66Inventor score
Filing activity: Aug 24, 1993 → Jul 20, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6498929B1 | Receiver having DC offset decreasing function and communication system using the same | Electricity | 76 | Expired |
| US5995819A | Frequency converter and radio receiver using same | Electricity | 48 | Expired |
| US5498851A | Laser machining apparatus and method | Performing Operations; Transporting | 35 | Expired |
| US7098737B2 | Variable inductor, oscillator including the variable inductor and radio terminal comprising this oscillator, and amplifier including the variable inductor and radio terminal comprising this amplifier | Electricity | 15 | Expired |
| US6809604B2 | Voltage control oscillator having a ferroelectric thin film perovskite single crystal resonator | Electricity | 14 | Expired |
| US5809408A | Variable gain circuit and radio apparatus using the same | Electricity | 10 | Expired |
| US7221920B2 | Voltage controlled oscillator, frequency synthesizer and communication apparatus | Electricity | 8 | Expired |
| US6870446B2 | High frequency filter | Electricity | 7 | Expired |
| US7190239B2 | Variable inductor, oscillator including the variable inductor and radio terminal comprising this oscillator, and amplifier including the variable inductor and radio terminal comprising this amplifier | Electricity | 5 | Expired |
| US8008973B2 | Amplifier for amplifying a high-frequency signal | Electricity | 5 | Active |
| US8948307B2 | Ask signal generator | Electricity | 1 | Active |
| US7417501B2 | Variable inductor, oscillator including the variable inductor and radio terminal comprising this oscillator, and amplifier including the variable inductor and radio terminal comprising this amplifier | Electricity | 1 | Expired |
| US11100975B2 | Semiconductor memory device and method for adjusting threthold voltage thereof | Physics | 0 | Active |
| US12217401B2 | Image processing apparatus, image processing method, and storage medium | Physics | 0 | Active |
| US10593405B2 | Read process in a semiconductor memory device including a memory cell transistor | Physics | 0 | Active |
| US12244217B2 | Power supply circuit and semiconductor integrated circuit including DC-DC converter and regulator | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.