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| Number | Title | Issue Date |
| 7161219 | MRAM devices with fine tuned offset A MRAM cell structure is disclosed as containing an additional ferromagnetic layer and coupling layer between the third ferromagnetic layer and the anti-ferromagnetic layer. The additional ferromagnetic layer affects the demagnetization field to which the free layer... | 01/09/2007 |
| 6973405 | Programmable interactive verification agent A verification agent can be used to verify hard and/or soft modules under test in an integrated circuit. The integrated circuit contains a processor and memory for storing code executable by the processor. The module under test performs predetermined operations. The... | 12/06/2005 |
| 4517662 | High-speed, compact magnetic bubble stretcher A magnetic bubble memory (of the type that has a magnetic film, a plurality of magnetic bubbles in the film, and an insulating layer over the film) includes an improved electromagnetic structure on the insulating layer for stretching the bubbles to aid in... | 05/14/1985 |
| 4142249 | Conductor-access, magnetic bubble memory A low power, conductor-access, bubble memory is realized with a single level of metallization for providing the requisite propagation fields. Sets of apertures in the conducting layer define bubble paths, and permalloy elements aligned with the apertures ... | 02/27/1979 |
| 4052707 | Magnetic device having domains of two different sizes in a single layer A magnetic device comprising at least one thin layer of a magnetizable material having a preferred direction of magnetization which is approximately perpendicular to the surface of the layer in which magnetic domains are generated, maintained and possibly... | 10/04/1977 |
| 4040040 | Channel bar bubble propagate circuit The magnetic bubble propagate circuit combines the forces on a bubble due to the properties of a modulated channel in a bubble material with the forces on the bubble due to a field produced by discrete magnetic poles P1 and P2 to mov... | 08/02/1977 |
| 4027299 | Surface wave augmented loop memory system A magnetic domain memory system using single in-plane alternating magnetic fields augmented by surface elastic waves. Acoustic waveguides having bars of Permalloy elements interleaved on opposite sides of the waveguides are pulsed by surface acoustic wave... | 05/31/1977 |
| 4014009 | Magnetic bubble propagate arrangement Improved magnetic bubble memory operation is achieved with an asymmetric half-disc design for a propagate pattern operative to move the bubbles in a "field-access" mode of operation. The pattern ensures the continuous presence of a elongated supportive m... | 03/22/1977 |
| 4012726 | Magnetic bubble replicator An improved magnetic bubble replicator is characterized by relatively high bias and phase margins. Both the orientation of a replicate conductor with respect to a permalloy replicator element and the shape of the replicator element are shown to be importa... | 03/15/1977 |
| 3988723 | Half-frequency feed ring generator of single wall domains A generator of single wall domains, i.e., bubbles, for a bubble memory system is disclosed. The generator includes a closed feed ring, constructed of a repetitive pattern of magnetically soft chevrons, having merging input and output channels of similar c... | 10/26/1976 |
| 3984823 | Magnetic bubble field-access replicator operative with the drive field in a fixed orientation A field-access bubble replicator operative in the presence of a magnetic field in a fixed orientation in the bubble film is achieved. Bubble stretch and cut pulses are operative to cut and transfer an image of data in the replicator in the presence of the... | 10/05/1976 |
| 3971037 | Magnetic bubble shift register A digital data storage element using magnetic bubbles, or small cylindrical magnetic domains formed in a thin film of magnetic material, in which binary information is stored by providing two alternative positions for a magnetic bubble, a pattern of high ... | 07/20/1976 |
