Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6097291 | Electronic article surveillance markers for direct application to optically recorded media | Ching-Long Tsai, Chester Piotrowski, Norman L. Koning, John Fitzgerald | 2000-08-01 |
| 5939985 | Electronic article surveillance markers for direct application to optically recorded media | Ching-Long Tsai, Chester Piotrowski, Norman L. Koning, John Fitzgerald | 1999-08-17 |
| 5825292 | Electronic article surveillance markers for direct application to optically recorded media | Ching-Long Tsai, Norman L. Koning, John Fitzgerald, Chester Piotrowski | 1998-10-20 |
| 5699047 | Electronic article surveillance markers for direct application to optically recorded media | Ching-Long Tsai, Chester Piotrowski, Norman L. Koning, John Fitzgerald | 1997-12-16 |