Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8434599 | Multiple car hoistway including car separation control | Arthur Hsu, CheongSik Shin, Hansoo Shim, SeongRak Jeong | 2013-05-07 |
| 8297409 | Coordination of multiple elevator cars in a hoistway | Arthur Hsu, Hansoo Shim, Cheong Sik Shin, SeongRak Jeong, Bruce P. Lerner | 2012-10-30 |