Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7439826 | Programmable surface acoustic wave filter | Mi-hyun Son, Takahiro Sato, Kwy-Ro Lee, Seong-soo Lee | 2008-10-21 |
| 6731916 | Power amplifying apparatus for mobile phone | — | 2004-05-04 |
| 6684085 | Mobile telephone and antenna therefor | — | 2004-01-27 |
| 5201060 | Baseband signal communication apparatus | Fusao Sekiguchi, Yoshikazu Kawashima, Ko Ishikawa | 1993-04-06 |
| 5122809 | Microwave electric power receiver | Masao TOMIYAMA, Yoshikazu Kawashima, Hiroaki Kojima | 1992-06-16 |
| 5119099 | Microwave responder | Fusao Sekiguchi, Yoshikazu Kawashima, Ko Ishikawa | 1992-06-02 |
| 5089829 | Antenna device shared by three kinds of waves | Hideaki Asai | 1992-02-18 |
| 4963887 | Full duplex transponder system | Yoshikazu Kawashima, Ko Ishikawa, Fusao Sekiguchi | 1990-10-16 |