Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6011474 | Multiple-use deactivation device for electronic article surveillance markers | Wing K. Ho, Richard L. Copeland | 2000-01-04 |
| 5999098 | Redistributing magnetic charge in bias element for magnetomechanical EAS marker | Ming-Ren Lian, David Lambeth | 1999-12-07 |
| 5989728 | Thin film magnetic recording medium having high coercivity | James K. Howard, Michael Andrew Parker | 1999-11-23 |
| 5949334 | Magnetostrictive element having optimized bias-field-dependent resonant frequency characteristic | Ming-Ren Lian, Nen-Chin Liu, Richard L. Copeland, Wing K. Ho, Robert C. O'Handley | 1999-09-07 |
| 5905435 | Apparatus for deactivating magnetomechanical EAS markers affixed to magnetic recording medium products | Richard L. Copeland | 1999-05-18 |
| 5867101 | Multi-phase mode multiple coil distance deactivator for magnetomechanical EAS markers | Richard L. Copeland, John T. Richter | 1999-02-02 |
| 5729200 | Magnetomechanical electronic article surveilliance marker with bias element having abrupt deactivation/magnetization characteristic | Richard L. Copeland | 1998-03-17 |
| 5583725 | Spin valve magnetoresistive sensor with self-pinned laminated layer and magnetic recording system using the sensor | Bruce Alvin Gurney, David Heim, Haralambos Lefakis, Daniele Mauri, Virgil S. Speriosu +1 more | 1996-12-10 |
| 5476680 | Method for manufacturing granular multilayer mangetoresistive sensor | James K. Howard, Todd Hylton, Michael Andrew Parker | 1995-12-19 |
| 5452163 | Multilayer magnetoresistive sensor | Robert E. Fontana, Jr., James K. Howard, Todd Hylton, Michael Andrew Parker, Ching Hwa Tsang | 1995-09-19 |