Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7003678 | IC card and IC chip module | Yoshihiro Ikefuji | 2006-02-21 |
| 6802008 | IC card and IC chip module | Yoshihiro Ikefuji | 2004-10-05 |
| 6601770 | Response device in contact/contactless IC card communication system | Yoshihiro Ikefuji | 2003-08-05 |
| 6422473 | Circuit chip mounted card and circuit chip module | Yoshihiro Ikefuji, Shigemi Chimura | 2002-07-23 |
| 6404644 | Non-contact IC card | Yoshihiro Ikefuji | 2002-06-11 |
| 6181001 | Card mounted with circuit chip and circuit chip module | Yoshihiro Ikefuji, Shigemi Chimura | 2001-01-30 |