Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6658497 | System for recognizing of a device connection state by reading structure information data which produced by pull-up resistor and pull-down resistor | Yusuke Kawasaki, Koken Yamamoto | 2003-12-02 |
| 6608995 | Detection circuit for proximity IC card device | Yusuke Kawasaki, Yoshiyasu Sugimura | 2003-08-19 |
| 6595415 | IC card processor | Tsuyoshi Niwata | 2003-07-22 |
| 6549993 | Contents check method, contents renewal method and processing apparatus | Yusuke Kawasaki, Hiroshi Sakurai | 2003-04-15 |
| 6536673 | Circuit for detecting presence or absence of proximity IC card device | Yusuke Kawasaki, Yoshiyasu Sugimura | 2003-03-25 |
| 6519650 | System and method for controlling data transfer between portable medias and a processor to minimize communication hardware requirements | Yusuke Kawasaki, Koken Yamamoto | 2003-02-11 |