Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5219557 | Covering agent for microscopy specimens | Erwin Rieke | 1993-06-15 |
| 4933164 | Stabilizers for staining solutions | Erwin Rieke | 1990-06-12 |
| 4687489 | Stabilizer for biological staining solutions | Erwin Rieke | 1987-08-18 |