Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5432499 | Collector type article surveillance marker with continuous keeper | — | 1995-07-11 |
| 5187462 | Multiple magnet assembly for use with electromagnetic article surveillance markers | — | 1993-02-16 |
| 4967185 | Multi-directionally responsive, dual-status, magnetic article surveillance marker having continuous keeper | — | 1990-10-30 |
| 4746908 | Dual-status, magnetically imagable article surveillance marker | — | 1988-05-24 |
| 4745401 | RF reactivatable marker for electronic article surveillance system | — | 1988-05-17 |
| 4710754 | Magnetic marker having switching section for use in electronic article surveillance systems | — | 1987-12-01 |
| 4581524 | Flexible ferromagnetic marker for the detection of objects having markers secured thereto | Earl B. Hoekman | 1986-04-08 |
| 4499444 | Desensitizer for ferromagnetic markers used with electromagnetic article surveillance systems | Eugene C. Heltemes | 1985-02-12 |