Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6023491 | Demodulation apparatus performing different frequency control functions using separately provided oscillators | Kazunao Urata, Shigeru Soga | 2000-02-08 |
| 5483686 | Channel selecting apparatus for simultaneous use with both phase-continuous modulation signals and digital modulation signals | Kazunao Urata | 1996-01-09 |
| 5291161 | Microwave band-pass filter having frequency characteristic of insertion loss steeply increasing on one outside of pass-band | — | 1994-03-01 |
| 5235296 | Directional coupler using a microstrip line | — | 1993-08-10 |
| 5015976 | Microwave filter | — | 1991-05-14 |
| 4906946 | Microwave oscillator having series and parallel feedback | Tsuyoshi Mekata, Toshihide Tanaka | 1990-03-06 |
| 4707669 | Dielectric resonator microwave oscillator having enhanced negative resistance | Tsuyoshi Mekata, Toshihide Tanaka | 1987-11-17 |
| 4679249 | Waveguide-to-microstrip line coupling arrangement and a frequency converter having the coupling arrangement | Toshihide Tanaka, Yoshikazu Yoshimura, Yasuhumi Shiomi | 1987-07-07 |
| 4648128 | Microwave integrated circuit immune to adverse shielding effects | Toshihide Tanaka | 1987-03-03 |
| 4623848 | Microwave preamplifier | Toshihide Tanaka | 1986-11-18 |
| 4541123 | Mixer circuit | — | 1985-09-10 |
| 4450584 | Microwave integrated circuit mixer | Toshihide Tanaka | 1984-05-22 |