Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9245289 | Taxonomy and data structure for an electronic procurement system | Charles A. Ballaro, Alexey Lef | 2016-01-26 |
| 8930244 | Method, medium, and system for processing requisitions | Charles A. Ballaro, Alexey Lef, Ronald Angerer, Philip J. Sabino, Lisa Fleck | 2015-01-06 |
| 8359245 | Taxonomy and data structure for an electronic procurement system | Charles A. Ballaro, Alexey Lef | 2013-01-22 |
| 8069096 | Multi-constituent attribution of a vendor's product catalog | Charles A. Ballaro, Alexey Lef | 2011-11-29 |
| 8065202 | Form management in an electronic procurement system | Charles A. Ballaro, Blake E. Ellavsky, Mark Pugh, Alexey Lef | 2011-11-22 |