Hiroshi Saka
12Patents
8h-index
6Co-inventors
61Inventor score
Filing activity: Jun 25, 1982 → Jun 20, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6023491A | Demodulation apparatus performing different frequency control functions using separately provided oscillators | Electricity | 43 | Expired |
| US4679249A | Waveguide-to-microstrip line coupling arrangement and a frequency converter having the coupling arrangement | Electricity | 29 | Expired |
| US5483686A | Channel selecting apparatus for simultaneous use with both phase-continuous modulation signals and digital modulation signals | Electricity | 27 | Expired |
| US5235296A | Directional coupler using a microstrip line | Electricity | 16 | Expired |
| US4906946A | Microwave oscillator having series and parallel feedback | Electricity | 15 | Expired |
| US5015976A | Microwave filter | Electricity | 14 | Expired |
| US4707669A | Dielectric resonator microwave oscillator having enhanced negative resistance | Electricity | 9 | Expired |
| US4623848A | Microwave preamplifier | Electricity | 9 | Expired |
| US4648128A | Microwave integrated circuit immune to adverse shielding effects | Electricity | 7 | Expired |
| US5291161A | Microwave band-pass filter having frequency characteristic of insertion loss steeply increasing on one outside of pass-band | Electricity | 7 | Expired |
| US4450584A | Microwave integrated circuit mixer | Electricity | 6 | Expired |
| US4541123A | Mixer circuit | Electricity | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.