Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
Boeve
Hans M. Boeve, Eindhoven NL
| Patent application number | Description | Published |
|---|---|---|
| 20100123456 | METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION, MAGNETIC PARTICLES AND THE USE OF MAGNETIC PARTICLES - A method for influencing and/or detecting magnetic particles in a region of action, magnetic particles and the use of magnetic particles is disclosed, which method comprises the steps of: —introducing magnetic particles into a region of action, —generating a magnetic selection field having a pattern in space of its magnetic field strength such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action —changing the position in space of the two sub-zones in the region of action by means of a magnetic drive field so that the magnetization of the magnetic particles change locally, —acquiring signals, which signals depend on the magnetization in the region of action, which magnetization is influenced by the change in the position in space of the first and second sub-zone, wherein the magnetic particles comprise a core region and a shell region, the core region comprising a magnetic material, wherein the magnetic material of the core region is provided as a mainly metallic material of comparably high saturation magnetization, wherein the shell region comprises mainly a metal oxide material or a noble metal material. | 05-20-2010 |
Hans Marc Bert Boeve, Eindhoven NL
| Patent application number | Description | Published |
|---|---|---|
| 20080205110 | Digital Magnetic Current Sensor and Logic - A sensor for sensing magnetic field strength has a sensor element, and detection circuitry for detecting a level of resistance of the sensor element, the level of resistance varying with magnetic field under test and having hysteresis, so that upon electromagnetic excitation the resistance can switch between two or more stable levels as the magnetic field under test varies. The sensor outputs a digital signal according to the level of resistance. The sensor output may further be interpreted in terms of a change-of-state upon electromagnetic excitation. As the sensor no longer needs a different characteristic from magnetic memory cells, it can be much easier to construct and to integrate with magnetic memory cells than an analog sensor. An excitation signal varies a threshold for the magnetic field under test at which the resistance switches, to enable multiple measurements with different thresholds. Multiple sensor elements can have different thresholds, by having differing geometry or size. It has applications in current sensing, and programmable magnetic logic, when multiple input currents are sensed. Changing the threshold can change the logic operation between AND and OR. | 08-28-2008 |
| 20080279025 | Electronic Circuit with Memory for Which a Threshold Level is Selected | 11-13-2008 |
| 20080279027 | Thermally Stable Reference Voltage Generator for Mram - A non volatile memory device comprises memory cells such as MRAM cells, reading circuits and a reference cell for generating a reference for use by the reading circuits, and can determine if the reference is degraded by thermal instability. This can help reduce a data error rate. Detecting such degradation can prove to be more effective than trying to design in enough margins for the lifetime of the device. The reference cell can be less susceptible to degradation than other cells by using different shape of cells and different write currents. Where each reference cell is used by many memory cells, the reference cell tends to be used more often than any particular memory cell and so can be more susceptible to degradation. Another way of ensuring against longer term degradation of the reference is periodically rewriting the reference cell. | 11-13-2008 |
| 20080294581 | Device Comprising a Sensor Arrangement and an Estimator | 11-27-2008 |
Hans M.b Boeve, Eindhoven NL
| Patent application number | Description | Published |
|---|---|---|
| 20100140146 | METHOD AND SEPARATOR SYSTEM FOR SEPARATING MAGNETIC PARTICLES, SEPARATOR COLUMN FOR USE IN A SEPARATOR SYSTEM - Magnetic Particle Imaging (MPI) requires high-performing tracer materials that are highly magnetic monodispersed particles with fast remagnetization behaviour. Known separation techniques only allow for fractionation of magnetic particles based on differences in magnetic volume. Proposed is a separation method, which allows for separation of magnetic particles with respect to their dynamic response onto an oscillating high gradient magnetic field. | 06-10-2010 |
Hans M. B. Boeve, Hechtel - Eksel BE
| Patent application number | Description | Published |
|---|---|---|
| 20090239586 | ORIENTATION SENSING IN A MULTI PART DEVICE - A device comprises a first part ( | 09-24-2009 |