Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4997032 | Thermal transfer bag | David A. Hesselroth, Ralph J. Stein, Jr. | 1991-03-05 |
| 4469623 | Detection of articles | Robert A. Prokop | 1984-09-04 |
| 4399226 | Tagging with microcapsules containing perfluoroalkyl pentafluorosulfide | Robert A. Prokop | 1983-08-16 |
| 4306993 | Microcapsules containing perfluoroalkyl pentafluorosulfide | Robert A. Prokop | 1981-12-22 |