Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5808493 | Rational frequency division device and frequency synthesizer using the same | Norihiro Akiyama, Hirokazu Yanagawa | 1998-09-15 |
| 5254955 | Advanced phase locked loop circuit | Hiroshi Saeki | 1993-10-19 |
| 5218313 | Frequency synthesizer for implementing generator of highly pure signals and circuit devices, such as VCO, PLL and SG used therein | Hiroshi Saeki | 1993-06-08 |
| 5160902 | Voltage controlled oscillator with controlled capacitance ratio in positive feedback loop to broaden bandwidth | Hiroshi Saeki | 1992-11-03 |
| 5122763 | Frequency snythesizer for implementing generator of highly pure signals and circuit devices, such as VCQ, BLL and SG, used therein | Hiroshi Saeki | 1992-06-16 |
| 4659999 | Direct frequency synthesizer which is step-wise variable and has phase continuity and phase reproducibility when switching frequencies | Tetsuo Igawa | 1987-04-21 |