Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9424585 | Coupon copy protection | Ravi Kant Keswani, Qingcai Guan, Jeffrey Weitzman | 2016-08-23 |
| 8000496 | Coupon copy protection | Ravi Kant Keswani, Qingcai Guan, Jeffrey Weitzman | 2011-08-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9424585 | Coupon copy protection | Ravi Kant Keswani, Qingcai Guan, Jeffrey Weitzman | 2016-08-23 |
| 8000496 | Coupon copy protection | Ravi Kant Keswani, Qingcai Guan, Jeffrey Weitzman | 2011-08-16 |