Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10198699 | Reservation management system and method | Christopher Butler, Leonard Sim | 2019-02-05 |
| 10062234 | System for regulating access to a resource | Christopher Butler, Leonard Sim | 2018-08-28 |
| 8779889 | System for regulating access to a resource | Christopher Butler, Leonard Sim | 2014-07-15 |
| 8606605 | Reservation management system and method | Christopher Butler, Leonard Sim | 2013-12-10 |
| 6843482 | Shaft seals for sealing pulverulent solids | — | 2005-01-18 |