Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5940362 | Disc device having a magnetic layer overweighing the information signal pattern for electronic article surveillance | Christopher B. Plonsky | 1999-08-17 |
| 5926095 | Transverse field annealing process to form E.A.S. marker having a step change in magnetic flux | Jiro Yamasaki, Richard Tellshow | 1999-07-20 |
| 5835016 | Multi-thread re-entrant marker with transverse anisotropy flux concentrators | Jiro Yamasaki | 1998-11-10 |
| 5801630 | Article surveillance magnetic marker having an hysteresis loop with large barkhausen discontinuities at a low field threshold level | Jiro Yamasaki | 1998-09-01 |
| 5565849 | Self-biased magnetostrictive element for magnetomechanical electronic article surveillance systems | Nen-Chin Liu, Robert C. O'Handley | 1996-10-15 |
| 5519379 | Multi-thread re-entrant marker with simultaneous switching | Jiro Yamasaki | 1996-05-21 |
| 5351033 | Semi-hard magnetic elements and method of making same | Nen-Chin Liu, Robert C. O'Handley, Richard L. Copeland | 1994-09-27 |
| 5313192 | Deactivatable/reactivatable magnetic marker having a step change in magnetic flux | Jiro Yamasaki | 1994-05-17 |