Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6590475 | Filter, antenna duplexer, and communication apparatus incorporating the same | Yasuo Yamada, Kikuo Tsunoda, Masayuki Atokawa, Hirofumi Miyamoto | 2003-07-08 |
| 6522220 | Frequency variable filter, antenna duplexer, and communication apparatus incorporating the same | Yasuo Yamada, Kikuo Tsunoda, Masayuki Atokawa, Hirofumi Miyamoto | 2003-02-18 |