Takeo Oita
35Patents
8h-index
19Co-inventors
68Inventor score
Filing activity: Aug 10, 1994 → Sep 23, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7378916B2 | Crystal oscillator device, oscillation method and heater | Electricity | 42 | Expired |
| US6798384B2 | Multi-element planar array antenna | Electricity | 16 | Expired |
| US7088032B2 | Crystal oscillator | Electricity | 15 | Expired |
| US6798305B2 | High frequency oscillator using transmission line resonator | Electricity | 12 | Expired |
| US7187337B2 | Planar antenna with slot line | Electricity | 11 | Expired |
| US6756857B2 | Planar circuit | Electricity | 9 | Expired |
| US6549083B2 | High-frequency crystal oscillator outputting a harmonic component | Electricity | 8 | Expired |
| US6917332B2 | Multielement planar antenna | Electricity | 8 | Expired |
| US6707347B2 | Crystal oscillator that utilizes the power transistor of an output amplifier to heat the crystal resonator | Electricity | 7 | Expired |
| US6791421B2 | Input-switching voltage-controlled oscillator and PLL-controlled oscillator | Electricity | 7 | Expired |
| US7061333B2 | Slot line based high frequency oscillator using two-port element | Electricity | 6 | Expired |
| US6825816B2 | Two-element and multi-element planar array antennas | Electricity | 6 | Expired |
| US6753817B2 | Multi-element planar array antenna | Electricity | 6 | Expired |
| US6992635B2 | Microstrip line type planar array antenna | Electricity | 5 | Expired |
| US6703904B2 | High frequency oscillator | Electricity | 5 | Expired |
| US5537049A | Temperature compensating circuit | Electricity | 5 | Expired |
| US7095373B2 | Planar array antenna | Electricity | 4 | Expired |
| US7119625B2 | High frequency oscillator using transmission line resonator | Electricity | 4 | Expired |
| US6756863B2 | High-frequency oscillator of frequency switching type and high-frequency oscillation method | Electricity | 4 | Expired |
| US6909333B2 | Coplanar line based high frequency oscillator | Electricity | 3 | Expired |
| US6798319B2 | High-frequency filter | Electricity | 3 | Expired |
| US6717481B2 | Injection-locked high-frequency oscillator | Electricity | 3 | Expired |
| US7352256B2 | Crystal oscillation circuit | Electricity | 3 | Active |
| US7019596B2 | Multiple output high-frequency oscillator | Electricity | 2 | Expired |
| US7259636B2 | Synchronous signal generator using a crystal oscillator and filter | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.