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| Number | Title | Issue Date |
| 7142449 | Low temperature silicided tip A tip, connected to a metal chip component, for forming readable changes in a memory storage system is disclosed. The tip includes a conductive layer, an amorphous silicon layer, and a silicide outer layer. The silicide outer layer contains a metal that has an annea... | 11/28/2006 |
| 7092278 | Memory device Data reading can be easily and precisely performed by setting specific conditions in writing into a selected memory cell. A memory cell has a structure, in which an interelectrode material layer is sandwiched between a first electrode and a second electrode. Data is... | 08/15/2006 |
| 7002820 | Semiconductor storage device A semiconductor storage device including a tip electrode, a media electrode and a storage media. The storage media has a storage area configurable to be in one of a plurality of structural states to represent information stored at the storage area, by passing a curr... | 02/21/2006 |
| 5143798 | Magneto-optical recording medium having double magnetic layers including a light rare earth element and satisfying a specified condition involving the product of the thickness and magnetization saturation of said layers A magneto-optical recording medium including a first magnetic layer (having film thickness t1 and saturation magnetization Ms1) and a second magnetic layer (having film thickness t2 and saturation magnetization Ms2) which are respectively made from a rare... | 09/01/1992 |
| 5016075 | Semiconductor memory device A semiconductor memory device is constructed of a lateral bipolar transistor as a load element. The base region of the lateral bipolar transistor has an impurity concentration which is increased from the upper surface of the base region in the depth direc... | 05/14/1991 |
| 4914626 | Magnetic bubble memory device An improved magnetic bubble memory device includes a continuous propagator overlay on a sheet of magnetic material. The propagator overlay being adapted to reduce the statistical switching effects and overall coercivity of the propagator overlay. The prop... | 04/03/1990 |
| 4467333 | Copying apparatus A copying machine comprising an image signal generating unit including a solid image pickup element for converting an optical image into an electric signal; an ion generating source; and an electrostatic image forming unit including an ion control electro... | 08/21/1984 |
| 4464437 | Magneto-optical memory element A magneto-optic memory element consisting of a substrate provided with an amorphous layer of an alloy of a rare-earth metal and a transition metal. The layer has a uniaxial magnetic anisotropy. Such memory elements are suitable for storing digital informa... | 08/07/1984 |
| 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 |
| 4271232 | Amorphous magnetic film A magnetic material of amorphous iron-nitride and a method for preparing the same are provided.... | 06/02/1981 |
| 4271485 | Bubble domain storage using improved transfer switch A magnetic bubble domain storage device comprising a plurality of storage shift registers and at least one major shift register, which serves to provide bubble domains to the storage register and to receive bubble domains from the storage registers. A nov... | 06/02/1981 |
| 4238837 | Domain drag effect devices A domain drag effect stripline pattern of conductive magnetic bubble material deposited upon a substrate is located in a magnetic bias field preferably normal to the plane of the stripline. Magnetic bubbles can be propagated through the stripline in respo... | 12/09/1980 |
| 4229807 | Current controlled disk replicator A magnetic bubble domain chip having two levels of metallurgy fabricated in a single masking step and including a replicate type bubble generator. The bubble generator includes a magnetic disk which holds a seed domain during reorientation of a magnetic d... | 10/21/1980 |
| 4126494 | Magnetic transfer record film A magnetic transfer record film employed for magneto-optically reading magnetic record patterns. The magnetic transfer record film is formed, as the principal component, of an alloy of a heavy rare earth metal and a transition metal and has an easy axis o... | 11/21/1978 |
| 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 |
| 4122536 | Self-organizing magnetic bubble lattice file A structure and technique are provided for improving the average access time in a bubble lattice file (BLF) storage, and for providing reordering capability in the lattice file. The bubble lattice arrangement includes a translation structure for moving bu... | 10/24/1978 |
| 4094003 | Sonic magnetic domain sensor This bubble domain sensor is capable of sensing the presence or absence of a bubble at a predetermined location within bubble supporting material regardless of whether the bubble is stationary or moving through that location. A magnetostrictive material l... | 06/06/1978 |
| 4086661 | Cylindrical magnetic domain element A cylindrical magnetic domain element is disclosed which utilizes a cylindrical magnetic domain (a magnetic bubble) produced by the application of a bias magnetic field to a magnetic sheet of orthoferrite, garnet or the like. Propagation patterns for the ... | 04/25/1978 |
| 4075611 | Consecutive bit access of magnetic bubble domain memory devices A magnetic bubble domain chip layout or organization which achieves consecutive bit access is provided by arranging the device in two substantially identical halves or parts. Each half contains half of the total number of storage loops, a separate access ... | 02/21/1978 |
| 4059829 | Multi state magnetic bubble domain cell for random access memories A multi-state memory cell which uses magnetic bubble domains in uniaxial material is described. The cell includes a channel in which a number of stable bubble positions separated by barriers is formed and on which select conductors are positioned to switc... | 11/22/1977 |
| 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 |
| 4035785 | Bubble domain sensor-error detector An improved thick film sensor for detection of magnetic bubble domains which can be configured to provide soft error detection and full data rate sensing. The sensor can be fabricated using single level masking techniques and is typically a magnetoresisti... | 07/12/1977 |
| 4027298 | Magnetic bubble memory bias magnet arrangement An in-plane magnetic holding field, long known to provide improved operating margins for a magnetic bubble memory during stop-start operation, is produced by a unique bias magnet design which provides a constant in-plane bias field in a manner consistent ... | 05/31/1977 |
| 4027295 | Magnetic bubble device A magnetic bubble device has a flat faced drive coil consisting of electrically conductive material having flat windings. The magnetic bubble chip of the device is positioned in the magnetic field produced by the flat faced coil.... | 05/31/1977 |
| 4025911 | Magnetic bubble memory bias magnet arrangement An in-plane magnetic holding field, long known to provide improved operating margins for a magnetic bubble memory during stop-start operation, is produced by unique bias magnet designs each of which provides a constant in-plane bias field in a manner cons... | 05/24/1977 |
| 4024517 | Continuous data stream FIFO magnetic bubble domain shift register There is described a simple first-in, first out (FIFO) magnetic bubble domain shift register which has continuous data storage capability. In a preferred embodiment, two parallel detector branches are associated with a main storage loop. The bubbles in th... | 05/17/1977 |
| 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 |
| 4008463 | Integrated bubble nucleator A nucleator for producing reverse magnetized domains in an amorphous magnetic material capable of supporting such domains. The nucleator is comprised of a current carrying conductor whose current carrying path includes a portion of the amorphous magnetic ... | 02/15/1977 |
| 4007453 | Magnetic bubble memory organization A magnetic bubble memory operative in the field-access mode is organized with separate read and write major channels accessing the same plurality of minor loops. The permalloy elements characteristic of field-access bubble memories define a novel swap fun... | 02/08/1977 |
| 4007445 | Minimum structure bubble domain propagation It has been discovered that magnetic bubble domains can be moved in a magnetic medium without requiring shaped structure along which magnetic poles are created for movement of the domains, and without reliance on magnetic fields established by conductor p... | 02/08/1977 |
| 4006276 | Magnetic bubble domain field shunt A magnetic bubble domain composite comprising an overlay of highly permeable magnetic material, such as permalloy, is provided for bubble domain material to shunt the magnetic field formed by bubble domains therein into a path that is substantially within... | 02/01/1977 |
| 4001673 | Method of testing and repairing magnetic bubble domain chip A method of both testing all loops of a long serial magnetic bubble domain chip, and repairing the chip for automatic bypass of defective loops. Each repair station associated with each loop is sequentially loaded with a bubble domain. Then new domains ar... | 01/04/1977 |
| 3996571 | Double layer bubble domain lattice system A bubble domain lattice system in which information exists as the presence and absence of bubble domains. A lattice exists in a conveyor layer and lattice bubble domains are coupled (magnetostatically or by exchange forces) to information bubble domains i... | 12/07/1976 |
| 3988739 | Input device for scanning documents with magnetic bubble printing A scanner transfers information in the form of magnetic characters to a soft magnetic film, and subsequently transfers the information to a storage medium, such as disc, tape, or the like. Use of amorphous and other bubble material is suggested. A bias fi... | 10/26/1976 |
| 3988722 | Single sided, high density bubble domain propagation device A magnetic bubble domain propagation device which is single sided and can be used to move bubble domains in amorphous magnetic films. The propagation structure is comprised of either one or two layers located on a single side of the amorphous magnetic med... | 10/26/1976 |
| 3983547 | Three-dimensional bubble device A three-dimensional magnetic bubble device formed by depositing, on a flexible substrate, a plurality of pseudo-chips of amorphous metallic film capable of supporting magnetic bubbles. These pseudo-chips are interconnected by thin-film conductors also dep... | 09/28/1976 |
| 3979737 | Bistable magnetic bubble domain devices A magnetic film is incorporated in a device suitable for use with a computer; the film is capable of supporting magnetic bubble domains of two different sizes corresponding to stable hysteresis states which exist simultaneously under the same external mag... | 09/07/1976 |
| 3979736 | Circular magnetic domain devices A circular magnetic domain device which includes a layer of a polycrystalline or amorphous uniaxial magnetic material having a single unique easy magnetisation direction substantially normal to a major surface thereof and crystallites of a maximum diamete... | 09/07/1976 |
| 3974487 | Magnetic bubble transmission system A magnetic bubble transmission system in which a magnetic bubble is retained in a magnetic thin plate under an appropriate bias magnetic field applied to said magnetic thin plate in a direction perpendicular thereto and in which said magnetic bubble is tr... | 08/10/1976 |
| 3971887 | Dynamic magnetic bubble display system A dynamic pattern display and optical data processing system is provided including magnetic bubble devices which may be operated in real-time to produce a multi-tone (gray scale) two dimensional pattern. The display pattern is obtained by directing a ligh... | 07/27/1976 |
