Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 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 |
| 4608677 | Magnetic bubble store The invention relates to a magnetic bubble store. This store comprises a magnetic garnet layer (1), in which can be formed magnetic bubbles, which are respectively localized by cells. Each cell comprises a pair of localization windows (2, 3), respectively cut ... | 08/26/1986 |
| 4592017 | Magnetic bubble memory A magnetic bubble memory is formed of a series of longitudinally oriented minor registers and at least one transversely oriented major access register, all of these registers having patterns with boundaries defined by ionically implanted zones of a magnet... | 05/27/1986 |
| 4578651 | Magnetooptical modulator In a magnetic layer of a magnetooptical modulator having fixed magnetic single domain areas, the areas of the layer present between the single domain areas are made electrically conductive by reduction.... | 03/25/1986 |
| 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 |
| 4535422 | Magnetic bubble memory with unimplanted motifs The invention relates to a magnetic bubble memory having a first layer of monocrystalline magnetic material with at least one crystallographic axis having the property of being aplanar easy magnetization axis, whereby the first layer has groups of unimpla... | 08/13/1985 |
| 4507754 | Magnetic bubble propagation device This device comprises an ionically implanted magnetic garnet layer, in which are defined non-implanted patterns and an electrically conductive layer superimposed on the garnet layer and insulated therefrom. The patterns are islands which are separated fro... | 03/26/1985 |
| 4493054 | Magnetic bubble store A magnetic bubble store including at least two series of longitudinally oriented major shift registers and a rotating magnetic field for producing a displacement of the bubbles in the minor registers. The series of minor registers are respectively arrange... | 01/08/1985 |
| 4476544 | Current-controlled magnetic domain memory A current-controlled domain memory comprises a register for propagating magnetic domains in a magnetizable layer. The register comprises a meandering current-conductor pattern. The pattern can be driven by a bipolar current. The current conductors have a ... | 10/09/1984 |
| 4443867 | Magnetic bubble store A magnetic bubble store formed of a series of longitudinally oriented shift registers and at least one transversely oriented access contour register having a single access point corresponding to each access end of each longitudinally oriented shift regist... | 04/17/1984 |
| 4435784 | Multi-replicator stretcher detector A detector for magnetic bubble domain devices including an input path for receiving and propagating magnetic bubble domains, an expander device which intersects the input path and functions to expand the bubble domain in a first direction, and a replicati... | 03/06/1984 |
| 4415989 | Dual conductor current access magnetic bubble memory In a dual-conductor type current-access magnetic bubble memory, a major loop is provided with a zigzag propagation path through which the major loop is connected with a plurality of minor loops, and transfer gates between the major and respective minor lo... | 11/15/1983 |
| 4387443 | Magnetic bubble device A dual-conductor type current-access magnetic bubble device comprises apertured conductors on which apertured magnetic sheets having the same configuration as the corresponding conductors are disposed, whereby magnetic poles are induced on each aperture o... | 06/07/1983 |
| 4314358 | Segmented, conductor access, magnetic bubble memory A conductor-access, magnetic bubble memory organized in the major-minor mode has minor loops separated into minor loop segments. The segments can be powered for moving bubbles selectively only within the corresponding segments of the minor loops. A transf... | 02/02/1982 |
| 4280195 | Planar and near planar magnetic bubble circuits A magnetic bubble circuit and process for the manufacture of same is disclosed in which a pattern of permalloy elements is overlaid on a substantially planar surface contiguous with the top surface of an underlying pattern of conducting elements. This str... | 07/21/1981 |
| 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 |
| 4229805 | Magnetic bubble-domain device A magnetic domain device comprising a layer of a magnetic material for the formation of magnetic domains, for example bubbles, under the influence of a bias magnetic field and a propagation structure with magnetically operating elements for driving the ma... | 10/21/1980 |
| 4228523 | Conductor access bubble memory arrangement Continuous film type, current-access bubble memories are designed for low power operation by including, along the current paths, areas of reduced width. The areas of reduced widths are characterized by relatively high current densities, which are preferre... | 10/14/1980 |
| 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 |
| 4187555 | Conductor access magnetic bubble memory arrangement A conductor access, magnetic bubble memory is organized in a major-minor mode by including transfer locations in the conducting layers which define the normal bubble propagation implementation. An attractive partitioning of each of the two conducting laye... | 02/05/1980 |
| 4181978 | Magnetic bubble memory with expander-detector arrangement An expander-detector arrangement for a conductor-access, magnetic bubble memory is realized by the inclusion in an electrically-conducting layer in which bubble propagation currents are impressed sets of apertures operative to enlarge a bubble laterally. ... | 01/01/1980 |
| 4178635 | Planar and near planar magnetic bubble circuits A magnetic bubble circuit and process for the manufacture of same is disclosed in which a pattern of permalloy elements is overlaid on a substantially planar surface contiguous with the top surface of an underlying pattern of conducting elements. This str... | 12/11/1979 |
| 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 |
| 4157591 | Magnetic domain device A magnetic bubble domain memory system having a first bubble domain path composed of Permalloy pattern elements, and a second bubble domain path composed of a current conductor is disclosed. Separate drives are associated with each of the paths, so the ad... | 06/05/1979 |
| 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 |
| 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 |
| 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 |
| 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 |
| 4122539 | Magnetic bubble element A magnetic bubble element which is useful as an image information processing element. A thin film made of a magnetic bubble forming material has a plurality of wedge-formed patterns made of a non-magnetostriction soft magnetic thin film is formed on the u... | 10/24/1978 |
| 4100608 | Exchange stack buffer memory There is provided a memory system, for example, a magnetic bubble domain memory, which includes an exchange stack buffer memory between a main storage area and other portions of a bubble domain chip organization. The buffer memory includes a plurality of ... | 07/11/1978 |
| 4085454 | Method and apparatus for the controlled generation of wall encoded magnetic bubble domains Two parallel conductors are positioned on top of a magnetic layer where bubble domains are to be coded. The two parallel conductors are positioned to form a gap therebetween of a particular size. An external in-plane magnetic field is applied to the magne... | 04/18/1978 |
| 4064496 | Wavering conductor loops for magnetic domain memories Disclosed are magnetic domain (bubble) memory arrays and correlator type memory arrays in uniaxially anisotropic crystals which utilize wavering loop conductor patterns at each bit location defining three contiguous magnetic domain retaining regions. On c... | 12/20/1977 |
| 4062002 | Device for biasing bubble domains A device adapted for biasing bubble domains in a low externally applied magnetic bias field. This device is suitable for use when isolated bubbles or a column of bubbles are translated to or from a bubble lattice. The device has a pair of parallel channel... | 12/06/1977 |
| 4062003 | One-level magnetic bubble switching device There is described an improved switching device for use in magnetic bubble domain systems. In this device, chevron propagation paths are utilized. A pair of substantially parallel conductors are interconnected at appropriate locations via the chevrons in ... | 12/06/1977 |
| 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 |
| 4058801 | Field access method for bubble memories Field access system for use in propagation of bubbles is disclosed. The field access system combines discrete drive elements with a continuous drive film. An example is a Permalloy overlay consisting of a continuous drive film with protruding T & I bars w... | 11/15/1977 |
| 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 |
| 4040038 | Column accessing of elements in confined arrays A technique for accessing interactive elements, such as magnetic bubble domains, which are in confined arrays where the elements are located with respect to one another in accordance with interactions therebetween. In order to improve the access time to a... | 08/02/1977 |
| 4017890 | Intermetallic compound layer in thin films for improved electromigration resistance A method and resulting structure for forming narrow intermetallic stripes which will carry high currents on bodies such as semiconductors, integrated circuits, magnetic bubbles structures, etc. The conductive stripe includes aluminum or aluminum copper wi... | 04/12/1977 |