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| Number | Title | Issue Date |
| 7378698 | Magnetic tunnel junction and memory device including the same A magnetic tunnel junction device includes a magnetically programmable free magnetic layer. The free magnetic layer includes a lamination of at least two ferromagnetic layers and at least one intermediate layer interposed between the at least two ferromagnetic layer... | 05/27/2008 |
| 7068530 | Magnetoresistive effect element and memory device using the same One block SB serving as a fundamental unit constituting a data reading circuit is constituted by four memory cells MS1 to MS4 connected electrically in series, four FETs S1 to S4 connected in parallel with the memory cells MS1 to M... | 06/27/2006 |
| 6939654 | Carrier and developer for developing latent electrostatic images A carrier develops latent electrostatic images in corporation with a toner and one particle of the carrier includes a magnetic particle, and a coating layer covering the magnetic particle. The coating layer includes a crosslinked condensation product of a compositio... | 09/06/2005 |
| 6331944 | Magnetic random access memory using a series tunnel element select mechanism A non-volatile memory array includes first and second pluralities of electrically conductive traces formed on a substrate. The second plurality of electrically conductive traces overlap first plurality of traces at a plurality of intersection regions. Eac... | 12/18/2001 |
| 5757056 | Multiple magnetic tunnel structures A double tunnel junction is disclosed that can be used as a magnetic sensor or as random access memories. The preferred embodiment comprises three magnetic metal materials separated by two insulating layers. A current is passed through the first tunnel ju... | 05/26/1998 |
| 5754465 | No physical movement component record reproduce device and flat display device A non-physical movement component recording and reproducing device produces a pair of special waves with special waveforms that form a special stationary waveform. An electrically-conducting media contains three overlaid layers, a first layer contains the... | 05/19/1998 |
| 5235569 | Magnetooptical recording method, and apparatus used in the method A method of this invention is a non-overwritable method of recording information on a magnetooptical recording medium in which at least two layers including a first layer comprising a magnetic thin film having a perpendicular magnetic anisotropy, and a se... | 08/10/1993 |
| 5103422 | Three-dimensional magnetic memory medium and method for initial setting thereof A three-dimensional magnetic memory medium which comprises a substrate, a plurality of magnetic layers and a plurality of nonmagnetic layers. The magnetic layers and the nonmagnetic layers are alternately stacked one above the other on the substrate. Each... | 04/07/1992 |
| 4802066 | Bed employed for light bathing A bed employed for use in light bathing. The bed comprises a transparent cloth stretched thereon and optical conductors arranged on the underside of the cloth. The optical conductors are arranged in such a manner that the light rays transmitted therethrou... | 01/31/1989 |
| 4613955 | Bias magnet temperature tracking of magnetic bubble memories Wide temperature range magnetic bubble memories are realized by using new compositions of rare earth garnets which require nonlinear bias field for operation over a given temperature range. The bias field structure for providing the corresponding nonlinea... | 09/23/1986 |
| 4584237 | Multilayer magneto-optic device A method of manufacturing and using a magneto-optic device is provided in which a non-magnetic substrate material is utilized to support a laminate formed of at least two layers of magnetic material having certain magnetic and optical properties optimized... | 04/22/1986 |
| 4516222 | Laminated magnetic bubble device Herein disclosed is a laminated magnetic bubble device of a multiple layer structure composed of at least one thin magnetic film having low coercive force and vertically oriented anisotropy which can allow easy generation and erasure of a magnetic bubble,... | 05/07/1985 |
| 4471467 | Magnetic domain device A magnetic device comprising at least one thin layer of a magnetizable material which has an easy axis of magnetization approximately normal to the surface of the layer. Magnetic domains are propagated in the layer by a rotating magnetic field in co-opera... | 09/11/1984 |
| 4470873 | Method of manufacturing magnetic sensor comprising at least two magnetoresistive elements A magnetic sensor including first and second electromagnetic elements arranged one on the other is manufactured by depositing on a glass substrate a first magnetoresistive film of Fe-Ni permalloy, an insulating film of SiO2 and a second magneto... | 09/11/1984 |
| 4415990 | Complementary bi-level magnetic bubble propagation circuit A bi-level magnetic bubble domain propagation structure in which the domain guide structure is formed by a spatially periodic pattern of permalloy implemented on two discrete levels separated by a substantially vertical gap. The structure forms a pattern ... | 11/15/1983 |
| 4360893 | Magnetic devices and method of manufacture Magnetic devices exemplified by bubble devices depend upon functional magnetic layers initially produced by epitaxy and reduced to effectively thinned surface layers by ion implantation. Implantation is at well-defined energy spectral levels which minimiz... | 11/23/1982 |
| 4358339 | Method of fabrication of bubble domain device structures A method of fabricating a microelectronic circuit device on a substrate by forming a layer of electrically and thermally conductive material (13) on a surface of a substrate (10). Channels are then etched in the layer of conductive material (13) to form p... | 11/09/1982 |
| 4357683 | Magnetic bubble memory with ion-implanted layer In ion-implanted bubble memories where a patterned ion-implanted layer defines the propagation paths and the special functional elements, a uniform additional ion implant layer provides for a high degree of control over the nucleation level in the bubble ... | 11/02/1982 |
| 4352862 | Thermally stable magnetic film which resists hard bubbles Disclosed is a crystalline magnetic film having at least two rare-earth elements symmetrically disposed at lattice sites in the film's interior to there produce a magnetic moment perpendicular to the film's surface; and having those same rare-earth elemen... | 10/05/1982 |
| 4344153 | Magnetic bubble memory device and method of fabricating the same A magnetic bubble memory device and a method of fabricating the device are disclosed in which a conductor pattern lies at least between a film for maintaining magnetic bubbles therein, and a soft magnetic material pattern. Further, the magnetic bubble mem... | 08/10/1982 |
| 4330848 | Charged wall amorphous magnetic layers Amorphous ferrimagnetic layers are described with support stable and mobile magnetic charged walls. These layers can be used as drive layers in magnetic bubble domain devices, and are characterized by very weak even-fold in-plane anisotropy, or substantia... | 05/18/1982 |
| 4323984 | Switching equipment using magnetic domains A small, highly reliable and inexpensive switching equipment, in which digital signals to be switched, stored as the presence or absence of magnetic domains in a first magnetic sheet or applied as the presence or absence of light to a flat plane formed by... | 04/06/1982 |
| 4315214 | Displacement sensor using a galvanomagnetic element positioned in a periodically inverted magnetic field Disclosed is a displacement sensor, comprising a pair of plates of magnetic bubble material disposed parallelly to each other across a space and a galvanomagnetic element disposed within the magnetic field formed in the aforementioned space and adapted to... | 02/09/1982 |
| 4299680 | Method of fabricating magnetic bubble memory device having planar overlay pattern of magnetically soft material Method of fabricating a magnetic bubble memory device in which the magnetizable upper overlay pattern of magnetically soft material, e.g. permalloy, defining bubble propagation elements and bubble function-determining components as located above a bubble-... | 11/10/1981 |
| 4283775 | Contiguous disk bubble storage A bubble storage system using contiguous propagation elements is described using magnetically soft drive layers for movement of the bubble domains in a bubble domain film, in response to the reorientation of a magnetic drive field in the plane of the driv... | 08/11/1981 |
| 4281396 | Magnetic strip domain memory system A magnetic memory device in which information is stored in the form of strip domains in a layer of magnetic material supported by a layer of ferromagnetic material. The ferromagnetic material contains a pattern of alternately magnetized strips for sustain... | 07/28/1981 |
| 4218762 | Device for close-packed magnetic domains A device for storing digital information in the form of magnetic domains including at least two ferrimagnetic layers on a substrate. The ferrimagnetic layers are separated by a compensation wall and in the presence of a bias magnetic field single magnetic... | 08/19/1980 |
| 4207614 | Magnetic bubble shift register store A magnetic bubble shift register store having a plate of magnetic material whose preferred magnetization direction extends transverse to the plane of the plate and in which bubbles are situated, said plate having two separate, elongated generally parallel... | 06/10/1980 |
| 4198692 | Self-biased structure for magnetic bubble domain devices There is provided a self-biased structure which permits magnetic bubble domain device operation. The invention consists of three layers of material with a bias layer sandwiched between two bubble layers.... | 04/15/1980 |
| 4187553 | Pedestal bubble domain chip and processes for making same An improved magnetic bubble domain chip and processes for making the chip are described. The chip is comprised of a magnetic bubble domain film in which small bubble domains can be moved, and overlying layers of metallurgy. The layer of metallurgy closest... | 02/05/1980 |
| 4172758 | Magnetic bubble domain device fabrication technique A process for fabricating magnetic bubble domain devices having multiple layers. The process is a single high resolution mask process. A magnetizable layer, a conductive layer and at least one dielectric spacer layer are provided on a suitable magnetic bu... | 10/30/1979 |
| 4171408 | Device operating on the displacement of magnetic domain walls In a device operating on the displacement of magnetic domain walls and comprising a layer of magnetizable material having an easy axis of magnetization normal to the plane of the layer, in which layer magnetic domain walls exist, the presence in the walls... | 10/16/1979 |
| 4165410 | Magnetic bubble devices with controlled temperature characteristics The temperature variation of the bubble collapse field of a class of garnet magnetic bubble layer materials is selected by selection of the ratio PbO to B2 O3 in the flux from which the layer is grown. This permits the growth of laye... | 08/21/1979 |
| 4151602 | Magnetic bubble multilayer arrangement A magnetic bubble device comprising a non-magnetic substrate layer, and a sequence of magnetic layers joined to each other and to the magnetic substrate layer, e.g. by epitaxial growing of crystalline layers, whereby at least two of the magnetic layers ma... | 04/24/1979 |
| 4122538 | Single wall domain, stripe domain memory plane A laminated, integral structure that forms a bubble memory plane for the generation, storage and transfer of single wall domains, bubble domains or bubbles is disclosed. The memory plane is formed of a non-magnetic gadolinium gallium garnet (GGG) support ... | 10/24/1978 |
| 4117544 | Magnetic single-wall domain bias field control arrangement A bias field control arrangement for correcting the bias field in accordance with stability range variations in magnetic domain thin film layers. A thin film layer is provided auxiliary to the layers, which auxiliary layer responds to external environment... | 09/26/1978 |
| 4101972 | Bubble domain propagation using oscillating stripe domains Disclosed is an apparatus for and a method of propagating bubble domains along fixed guidance channel forming stripe domains by capturing them in moveable stripe domains and then moving the capturing moveable stripe domains. The memory plane comprises a n... | 07/18/1978 |
| 4095279 | Orthogonal potential well matrix and amplitude modulated bias field for bubble domain propagation An apparatus for and a method of propagating bubble domains is disclosed. The apparatus includes a memory plane that is comprised of a non-magnetic support member upon which are formed a bubble domain layer and at least one stripe domain layer. The stripe... | 06/13/1978 |
| 4091459 | Store comprising drivable domains A storage device comprising a main magnetic field generator, a rotary magnetic field generator and a number of plates of magnetic material which are arranged transverse to the main magnetic field and in which magnetic domains can be formed and transported... | 05/23/1978 |
| 4070658 | Ion implanted bubble propagation structure An improved ion implanted propagation structure for movement of magnetic bubble domains in a storage medium which comprises an additional magnetic layer capable of ion implantation in combination with a bubble domain storage layer in which the bubble doma... | 01/24/1978 |
