Hitoshi Akamine
36Patents
12h-index
45Co-inventors
81Inventor score
Filing activity: Apr 6, 1989 → Dec 2, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6483398B2 | Directional coupler, high frequency circuit module and wireless communication system | Electricity | 42 | Expired |
| US6972640B2 | Directional coupler, high frequency circuit module and wireless communication system | Electricity | 38 | Expired |
| US6765268B2 | Multiple transistors having a common gate pad between first group of drains and second group of drains | Electricity | 38 | Expired |
| US6900694B2 | High frequency power amplifier module and wireless communication apparatus | Electricity | 29 | Expired |
| US6605999B2 | High-frequency power amplifier, wireless communication apparatus and wireless communication system | Electricity | 28 | Expired |
| US6989600B2 | Integrated circuit device having reduced substrate size and a method for manufacturing the same | Electricity | 25 | Expired |
| US6329879A | High frequency power amplifier system and wireless communication system | Electricity | 23 | Expired |
| US6433639B1 | High frequency power amplifier module and wireless communication system | Electricity | 20 | Expired |
| US7139538B2 | Electronic component for amplifying high frequency power and radio communication system | Electricity | 16 | Expired |
| US8115234B2 | Semiconductor device | Electricity | 13 | Active |
| US6617927B2 | High frequency power amplifier module, and wireless communications system | Electricity | 12 | Expired |
| US6919762B2 | High frequency power amplifier electric parts and radio telecommunication system | Electricity | 12 | Expired |
| US6972626B2 | High frequency power amplification electric part and wireless communication system | Electricity | 11 | Expired |
| US7271662B2 | High frequency power amplifier circuit and electric component for high frequency power amplifier | Electricity | 8 | Expired |
| US5075803A | Signal discriminating device for VTR having expanded dynamic range | Electricity | 8 | Expired |
| US7050769B2 | Electronic apparatus and design method | Electricity | 8 | Expired |
| US7395036B2 | Semiconductor integrated circuit for high frequency power amplifier and electric components with the semiconductor integrated circuit | Electricity | 7 | Active |
| US6463267B1 | High frequency power amplifying apparatus having amplifying stages with gain control signals of lower amplitudes applied to earlier preceding stages | Electricity | 7 | Expired |
| US7145394B2 | High frequency power amplifier module, and wireless communication system | Electricity | 6 | Expired |
| US7352244B2 | Electronics parts for high frequency power amplifier | Electricity | 6 | Active |
| US6992528B2 | Semiconductor device | Electricity | 6 | Expired |
| US6897728B2 | High frequency power amplifier module and wireless communication system | Electricity | 5 | Expired |
| US7141876B2 | Semiconductor device | Electricity | 4 | Expired |
| US7650133B2 | Semiconductor integrated circuit device and high frequency power amplifier module | Electricity | 3 | Active |
| US7595694B2 | Electronics parts for high frequency power amplifier | Electricity | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.