Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8025435 | Light guide sheet and movable contact element using the same | Naoki Tatehata, Yousuke Chikahisa, Tsutomu Aisaka | 2011-09-27 |
| 7897889 | Movable contact element and switch using the same | Yousuke Chikahisa | 2011-03-01 |