Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8066183 | Method to prevent metered toner gray market leakage | Leonard Guan | 2011-11-29 |
| 7677448 | Method to prevent metered toner gray market leakage | Leonard Guan | 2010-03-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8066183 | Method to prevent metered toner gray market leakage | Leonard Guan | 2011-11-29 |
| 7677448 | Method to prevent metered toner gray market leakage | Leonard Guan | 2010-03-16 |