Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6608995 | Detection circuit for proximity IC card device | Yusuke Kawasaki, Shigeru Hashimoto | 2003-08-19 |
| 6536673 | Circuit for detecting presence or absence of proximity IC card device | Yusuke Kawasaki, Shigeru Hashimoto | 2003-03-25 |