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| Number | Title | Issue Date |
| 7071687 | Photomagnetic field sensor A photo magnetic field sensor includes a Faraday rotator made of a paramagnetic material, a polarizer, an analyzer, a light-irradiating element, and a light-sensing element. The Faraday rotator is made of a paramagnetic garnet single crystal including at least Tb an... | 07/04/2006 |
| 6836418 | Slant short-period grating There is provided a slant short-period grating which is obtainable by irradiating light onto an optical fiber whose core is formed from quartz glass to which has been doped a photosensitive dopant that changes a refractive index of the quartz glass by light irradiat... | 12/28/2004 |
| 6473443 | System and method for generating a grating image A method and a system for generating grating images with an improved speed is disclosed. The system utilizes a coherent light source for providing a coherent beam L, an exposure control device for controlling the exposure of the coherent beam L, a beam gu... | 10/29/2002 |
| 5142491 | Magnetic bubble recording device Disclosed is an improved magnetic bubble recording device for optically effecting writing, reading and erasure of information with respect to magnetic bubbles. The magnetic bubble recording device has a basic structure in which a first magnetic film for f... | 08/25/1992 |
| 4974200 | Method of transferring Bloch lines in the domain wall of a magnetic domain, and a magnetic memory using the method A method of transferring Bloch lines present in a domain wall of a magnetic domain formed in a thin magnetic firm, includes cyclically forming asymmetrical potential wells along the domain wall in order to locate the Bloch lines at predetermined positions... | 11/27/1990 |
| 4884236 | Bloch line memory device A Bloch line memory device comprises stripe magnetic domains in a magnetic film for holding magnetic bubble domains. A pair of Bloch lines is stored as an information carrier in a magnetic wall constructing the stripe magnetic domain. A longitudinal direc... | 11/28/1989 |
| 4881198 | Duplicator in a magnetic bubble memory and process for duplicating bubbles therein A duplicator in a magnetic bubble memory with non-implanted patterns, a process for realizing the duplicator and a serial - parallel magnetic bubble memory having at least one of the aforementioned duplicators are disclosed. In a magnetic bubble memory ha... | 11/14/1989 |
| 4731752 | Bloch line memory device with stripe domain stabilizing means In a Bloch-line memory wherein a magnetic film comprises a first and a second major line and a minor loop portion defined between the first and second major lines, successive presence and absence of magnetic bubbles being transferred along the first major... | 03/15/1988 |
| 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 |
| 4577290 | Replicator with improved propagation performance Bubble-to-bubble interaction in a magnetic bubble domain memory is reduced by a notch provided in the outer edge of the replicator of the bubble memory device. The notch serves to slow down the movement of the bubble around the replicator or U-turn elemen... | 03/18/1986 |
| 4550389 | Apparatus and method for switching a magnetic domain lens A magnetic domain device has at least one post element formed from a material that exhibits magnetic domain characteristics and that is positioned on a nonmagnetic substrate material. A pair of electrical drive lines associated with a post element permit ... | 10/29/1985 |
| 4500176 | Method and device for improving a conductive switching grid for switchable magnetic elements An improved conductive grid for a magneto-optic display is shown having individual magnetic and transparent post elements separated from one another by an orthogonal grid-like pattern. Conductors are deposited in each vertical separation and every other h... | 02/19/1985 |
| 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 |
| 4339305 | Planar circuit fabrication by plating and liftoff The method of manufacturing predetermined microcircuit conductor patterns, which includes forming on the surface plane of a substrate a layer of insulator material, forming a layer of resist on the layer of insulator material, patterning the layer of resi... | 07/13/1982 |
| 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 |
| 4264985 | Continuous propagation structures The invention is directed to continuous (gapless) propagation structures for use with magnetic bubble domain devices. The gapless structures are arranged so that magnetic bubbles will propagate therealong without a significant change in size or diameter o... | 04/28/1981 |
| 4251319 | Bubble memory chip and method for manufacture A bubble memory chip is manufactured using the following processing steps: a first dielectric insulation layer is deposited on the epitaxial garnet substrate, next, a comparatively thicker layer of a second dielectric insulator is deposited on the surface of t... | 02/17/1981 |
| 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 |
| 4181979 | Magnetic bubble memory with single-level bubble functional elements Magnetic bubble functional elements are implemented by aperture patterns in a single layer of electrically-conducting material. The operations of the elements are compatible with single-level conductor driven bubble memories described in A. H. Bobeck pate... | 01/01/1980 |
| 4180863 | Magnetic domain device modular assembly Plural groups of one or more magnetic domain devices each are mounted in an array on the circuitized surface of a common substrate. A rectangular pattern of slots is provided in the substrate around each group. Each group is encompassed through the slots ... | 12/25/1979 |
| 4164028 | Current access bubble memory system A current access bubble memory system includes a method and device for propagating and switching isolated bubbles within a plurality of orthogonal propagation channels. The device includes two orthogonal arrays of parallel current conductors oriented at 4... | 08/07/1979 |
| 4164026 | Contiguous element field access bubble lattice file A bubble domain storage system is described which has the best features of contiguous element bubble propagation systems and bubble lattice file systems. An array of magnetic bubble domains, such as a lattice, is moved along contiguous propagation pattern... | 08/07/1979 |
| 4162537 | Magnetic bubble memory A high speed magnetic bubble memory is realized with two like-apertured metallic layers each adapted for substantially uniform overall current flow. The apertures locally modify the current flow to provide localized field gradients for moving bubbles in a... | 07/24/1979 |
| 4149265 | Method of improving the operation of a single wall domain memory system A method of and an apparatus for improving the selective positioning of single wall domains or bubble domains in a bubble domain memory system is disclosed. The method includes the use of slotted intersecting digit and word drive lines that form memory ar... | 04/10/1979 |
| 4143420 | Conductor-access, magnetic bubble memory A conductor-access, magnetic bubble memory is realized with a single metallization level for propagation. The familiar undulating or serpentine conductor pattern used for moving bubbles is modified to allow a simple and easily realizable, low power drive ... | 03/06/1979 |
| 4143419 | Magnetic bubble memory with single level electrically-conducting, drive arrangement A conductor-access magnetic bubble memory is realized with a single electrically-conductive film for the propagation of bubbles. The film is characterized by sequences of apertures in the film. The sequences define paths for bubble movement in response to... | 03/06/1979 |
| 4142247 | Conductor-driven magnetic bubble memory with an expander-detector arrangement A magnetic bubble memory with a single electrically-conducting layer for defining a bubble propagate arrangement is adapted to provide a compatible bubble expander detector by a sequence of increasingly larger apertures in the conducting layer.... | 02/27/1979 |
| 4128898 | Structuring of bubble domains in a bubble domain memory plane Defining the structuring of bubble domains in the magnetizable layer of a bubble domain memory plane is determined by modification of the magnetic characteristics of the magnetizable layer in the confinement area. The memory plane is comprised of a non-ma... | 12/05/1978 |
| 4114191 | Bubble domain structuring in bubble domain memory plane Defining the structuring of bubble domains in a magnetizable layer of a bubble domain memory plane is determined by modifying the magnetic characteristics of the magnetizable layer in the confinement area. The bubble domain memory plane is comprised of a ... | 09/12/1978 |
| 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 |
| 4067002 | Field access of bubble domain lattice Propagation of a lattice of magnetic bubble domains by field access techniques is achieved by using a periodic array of magnetic chevron elements. In response to the reorientation of a magnetic drive field in the plane of the chevron elements, magnetic po... | 01/03/1978 |
| 4060798 | Method for increasing the critical velocity of magnetic bubble propagation in magnetic materials The critical velocity at which magnetic bubbles can propagate within a matic material is increased by establishing an easy axis of magnetization within the material. This axis is either growth-induced or strain-induced. In one embodiment, the material ha... | 11/29/1977 |
| 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 |
| 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 |
| 4040019 | Ion implanted magnetic bubble memory device having major and minor rows A magnetic bubble domain memory device employing a major row of contiguous regions for major loop bubble travel and a plurality of minor rows of contiguous regions for minor loop bubble travel, wherein the remainder of the magnetic domain-supporting layer... | 08/02/1977 |
| 4040020 | Bubble lattice device A device adapted for use in a low externally applied magnetic field, for example, 15 Oe, with a bubble lattice system is described. The device has a Y shaped channel in which bubbles are propagated between a bubble lattice column and either detector means... | 08/02/1977 |
| 4023150 | Bubble translation system A bubble lattice translation system is disclosed. The system is a combination of two arrays of parallel conductors and confining means. One array of parallel conductors is oriented at an angle of 60° to the lattice translation axis. All of these conducto... | 05/10/1977 |
| 4012724 | Method of improving the operation of a single wall domain memory system A method of and an apparatus for improving the selective positioning of single wall domains or bubbles in a memory system is disclosed. The method includes the use of slotted intersecting digit and word lines that are coated with a magnetic material of re... | 03/15/1977 |
| 4001796 | Bubble lattice structure with barrier A bubble lattice structure is disclosed containing a barrier positioned between at least two adjacent rows of bubble domains and/or stripe domains. More than one barrier may be utilized to retain integrity of the lattice. The bubble lattice structure cont... | 01/04/1977 |
| 3996573 | Bubble propagation circuits and formation thereof A magnetic domain memory comprising a planar layer of magnetic material in which magnetic bubbles are moved by a rotating magnetic field in the plane of the layer. At least one circuit or path is provided for guiding the propagation of the bubbles in the ... | 12/07/1976 |
