Kenichi Maruhashi
48Patents
10h-index
37Co-inventors
75Inventor score
Filing activity: May 5, 1993 → Sep 9, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6774748B1 | RF package with multi-layer substrate having coplanar feed through and connection interface | Electricity | 101 | Expired |
| US6320543A | Microwave and millimeter wave circuit apparatus | Electricity | 97 | Expired |
| US9693244B2 | Sensor and receiving device in sensor system | Electricity | 71 | Active |
| US6674347B1 | Multi-layer substrate suppressing an unwanted transmission mode | Electricity | 38 | Expired |
| US6518864B1 | Coplanar transmission line | Electricity | 22 | Expired |
| US7170373B2 | Dielectric waveguide filter | Electricity | 22 | Expired |
| US5384558A | Radio-frequency integrated circuit device having adjustable matching circuit | Electricity | 14 | Expired |
| US6903700B2 | High frequency circuit substrate and method for forming the same | Electricity | 11 | Expired |
| US7924799B2 | Radio communication device | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5453631A | Field effect transistor having a multi-layer channel | Electricity | 10 | Expired |
| US7378925B2 | Dielectric resonator, dielectric resonator frequency adjusting method, and dielectric resonator integrated circuit | Electricity | 9 | Expired |
| US6437654B2 | Substrate-type non-reciprocal circuit element and integrated circuit having multiple ground surface electrodes and co-planar electrical interface | Electricity | 7 | Expired |
| US7196598B2 | Dielectric waveguide filter with inductive windows and coplanar line coupling | Electricity | 6 | Expired |
| US9203161B2 | Antenna apparatus and method of adjusting the same | Electricity | 5 | Active |
| US7710216B2 | Balun circuit and integrated circuit device | Electricity | 4 | Active |
| US8933840B2 | Control method of wireless communication system, wireless communication system, wireless communication apparatus, and adjustment method of array weight vector | Electricity | 4 | Active |
| US8975725B2 | Bias circuit and method of manufacturing the same | Electricity | 4 | Active |
| US8508409B2 | Control method of wireless communication system, wireless communication system, adjustment method of array weight vector, and wireless communication device | Electricity | 3 | Active |
| US8526878B2 | Control method of wireless communication system, wireless communication system, transmitting apparatus, and receiving apparatus | Electricity | 3 | Active |
| US5466955A | Field effect transistor having an improved transistor characteristic | Electricity | 3 | Expired |
| US9287960B2 | Radio communication apparatus, transmitter, and radio communication method | Electricity | 2 | Active |
| US8126504B2 | Method of controlling wireless communication system and wireless communication system | Electricity | 2 | Active |
| US8811907B2 | Control method of radio communication system, radio communication system, and radio communication apparatus | Electricity | 2 | Active |
| US9472976B2 | Storage battery device and charging control method | Emerging Cross-Sectional Technologies | 2 | Active |
| US8326244B2 | Power amplifier, and method of controlling power amplifier | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.