Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4980542 | Postal charge accounting system | Paul Kim, Robert Chen, Joseph L. Gargiulo, Robert T. Durst, Jr., Wojciech M. Chrosny | 1990-12-25 | |
| 4978839 | Postage meter value card system | Robert Chen, Paul Kim | 1990-12-18 | $7,160,000 |
| 4908502 | Fault tolerant smart card | — | 1990-03-13 | $6,368,000 |