Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7796050 | Abnormal circuit operation detection system | Takanori Yasui, Masato Hashizume, Yoshihisa Ikeda, Hiroyuki Iwaki | 2010-09-14 |
| 7609975 | Optical transmission apparatus | Yoshihisa Ikeda | 2009-10-27 |