Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10051040 | Elevator system using dual communication channels | Daryl J. Marvin, Vijay Jayachandran | 2018-08-14 |
| 8297409 | Coordination of multiple elevator cars in a hoistway | Arthur Hsu, Cheng-Shuo Wang, Hansoo Shim, Cheong Sik Shin, SeongRak Jeong | 2012-10-30 |
| 7470022 | Cap attachable, adjustable sunglasses | — | 2008-12-30 |
| 7240370 | Cap attachable, adjustable sunglasses | — | 2007-07-10 |