Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8672098 | Elevator safety device with foreign matter detection using a light beam | Hiroshi Kashiwakura, Takuya Fujii | 2014-03-18 |
| 8584809 | Safety device for elevator | Xiao-Ning Sun, Weifeng Chen, Kunpeng Yang, Hiroshi Kashiwakura, Takuya Fujii | 2013-11-19 |