Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9354262 | Passive intermodulation measurement apparatus | — | 2016-05-31 |
| 6720900 | Guess method and apparatus, sampling apparatus | Takuya Matsumoto | 2004-04-13 |
| 6549021 | APPARATUS FOR MEASURING THE RATIO OF ELECTRICAL SIGNALS, ELECTRIC COMPONENT MEASURING INSTRUMENT, METHOD FOR CALIBRATING ELECTRIC COMPONENT MEASURING INSTRUMENTS AND METHOD FOR MEASURING THE RATIO OF ELECTRICAL SIGNALS | — | 2003-04-15 |
| 6414476 | Current detecting device, impedance measuring instrument and power measuring instrument | — | 2002-07-02 |
| 6316943 | Signal generator | Hideki Yamashita | 2001-11-13 |
| 6028425 | Signal generator | Hideki Yamashita | 2000-02-22 |
| 5600249 | Determining contact quality of an impedance meter | Yasuaki Komatsu, Masahiro Ikeda | 1997-02-04 |
| 4885528 | Apparatus which uses a simulated inductor in the measurement of an electrical parameter of a device under test | Hideshi Tanaka, Shigeru Tanimoto, Yasuaki Komatsu, Koichi Yanagawa, Yoichi Kuboyama | 1989-12-05 |
| 4795962 | Floating driver circuit and a device for measuring impedances of electrical components | Kouichi Yanagawa | 1989-01-03 |
| 4654585 | Phase detection method | — | 1987-03-31 |