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| Number | Title | Issue Date |
| 6715014 | Module array A module array includes a lead-in transmission line from a driving source. The lead-in transmission line ends with a series impedance between the lead-in transmission line and a star node. The star node has a terminating impedance between it and a termination voltag... | 03/30/2004 |
| 4343038 | Magnetic bubble domain structure A magnetic bubble domain structure comprising a bubble domain layer supported by a nonmagnetic substrate. A control layer is superimposed on the major surface of the domain layer which remote from the substrate. The control layer has an easy axis of magne... | 08/03/1982 |
| 4322818 | Magnetic bubble memory device A magnetic bubble memory chip is arranged in such a way that the major surface of the chip will not cross perpendicularly with the external bias magnetic field to generate a component of the bias magnetic field which is parallel to the major surface. This... | 03/30/1982 |
| 4178636 | Gradientless propulsion of magnetic bubble domains Magnetic bubble domains are propagated in a magnetic medium in a desired direction using magnetic fields which have no spatial gradients. This is in contrast with conventional propagation techniques where magnetic overlays have to be used with applied mag... | 12/11/1979 |
| 4174540 | Bubble domain transfer switches These improved current controlled transfer switches are particularly useful for changing the propagation path of very small bubble domains without requiring large amounts of transfer current. The underlying principle is that the transfer operation occurs ... | 11/13/1979 |
| 4149266 | Discrimination of bubble state by bubble collapse A method for detecting the wall state of a soft bubble based upon the collapse characteristics of the bubble domain on a layer of bubble domain supporting material is described. The method includes the step of exchange coupling a magnetic layer, for examp... | 04/10/1979 |
| 4145750 | Field access magnetic bubble memory device A field access magnetic bubble memory device including a memory chip applied with an in-plane magnetic field at need is disclosed. At a transient stop operation of the device before its interrupted state, an in-plane field is removed after it has been hel... | 03/20/1979 |
| 4144585 | Bubble domain structures and method of making A magnetic bubble domain structure and method of making comprising a film of a nickel-iron alloy of 80 to 83.5% nickel content and substantially zero constant of magnetostriction formed by vapor deposition of the alloy onto a flat substrate at a substrate... | 03/13/1979 |
| 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 |
| 4118793 | Gradientless propulsion of magnetic bubble domains using modulated in-plane fields Magnetic bubble domains are propagated in a magnetic medium in a desired direction using in-plane magnetic fields which are time varying but which have no spatial gradients. In applications such as information storage, the need for conventional propagatio... | 10/03/1978 |
| 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 |
| 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 |
| 4068220 | Controllable state conversions for S=1 bubble domains A technique for controllably providing state conversions between bubble domains having a common winding number S is described. In particular, controlled conversions between bubble domains having winding number S=1 is achieved by the application of spatial... | 01/10/1978 |
| 4052710 | Systems using lattice arrays of interactive elements Apparatus is provided using as an integral portion thereof a confined array (such as a lattice) of interactive elements, the interactions among which are largely determinative of the positions of the interactive elements since there is a minimum of positi... | 10/04/1977 |
| 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 |
| 4038541 | Hard magnetic bubble domain analog multiplier Hard magnetic bubble domains are propagated in displaced orbits in response to the product of two cyclically varying propagation control fields. The control fields modulate the hard bubble domain diameter and a driving field gradient. Repulsive boundaries... | 07/26/1977 |
| 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 |
| 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 |
| 4003768 | Method for treating magnetic alloy to increase the magnetic permeability A method for increasing the magnetic permeability of a magnetic alloy having an easy axis and a hard axis which comprises subjecting a body of the magnetic alloy to a magnetic field of at least about 40 Gauss oriented in the direction of the hard axis whi... | 01/18/1977 |
| 3996577 | Method and apparatus for the controlled generation of wall-encoded magnetic bubble domains A magnetic layer is exchange coupled to a bubble medium in an area where bubble domains are nucleated, and is used together with or without an externally applied in-plane magnetic field to controllably generate bubble domains with either one pair (S = 0) ... | 12/07/1976 |
| 3953842 | Bubble lattice initialization A method of providing an initial lattice containing magnetic bubble domains in a film is disclosed. The method includes a first step of providing a confinement area in a film to contain magnetic domains, a second step of applying an AC in-plane magnetic f... | 04/27/1976 |
| 3938111 | Magnetic device for producing domains Magnetic device comprising at least one thin layer of a magnetisable material which has a preferred direction of magnetisation substantially at right angles to the surface of the layer. Magnetic domains are produced by a magnetic field which is situated s... | 02/10/1976 |
