Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D347585 | Steam sterilization monitor | Frank E. Platko, Peter Hunsinger, Irving A. Speelman | 1994-06-07 |
| 5158363 | Steam sterilization indicator | Irving A. Speelman, Frank E. Platko | 1992-10-27 |
| 5137211 | Dispensing carton | William Fitzgerald | 1992-08-11 |