Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7414871 | Program control circuit of flash memory device having MLC and method thereof A program control circuit and method thereof selectively controls a supply time of a word line bias voltage depending on the number of program cycles being in progress. Therefore, over-programming of MLCs can be prevented and an overall program time can be shortened... | 08/19/2008 |
| 7383376 | Apparatus and methods for storing data in a magnetic random access memory (MRAM) An apparatus and methods store data in a magnetic random access memory (MRAM) in a fast and efficient manner. Embodiments advantageously decrease the number of clock cycles required to store data by eliminating at least one wait state in a transition from a read sta... | 06/03/2008 |
| 7335992 | Semiconductor apparatus with improved yield The semiconductor apparatus includes a pad; a first line layer placed immediately beneath the pad; and a lattice-shaped contact being between the pad and the first line layer. ... | 02/26/2008 |
| 7259976 | Program control circuit of flash memory device having MLC and method thereof A program control circuit and method thereof selectively controls a supply time of a word line bias voltage depending on the number of program cycles being in progress. Therefore, over-programming of MLCs can be prevented and an overall program time can be shortened... | 08/21/2007 |
| 7113104 | Giant magnetoresistance based gyroscope A gyroscope (10) for determining rate of rotation includes a giant magnetoresistor (GMR) (14) attached to a mass (12) oscillating along a first axis. When the gyroscope (10) is rotated, the mass (12) also oscillates along a second ... | 09/26/2006 |
| 6977108 | Recording medium including patterned tracks and isolation regions A recording medium includes a substrate, and a recording layer formed on the substrate having (a) a recording track band, and (b) recording cells regularly arrayed in the recording track band to form a plurality rows of sub-tracks. The recording cells included in ea... | 12/20/2005 |
| 6940277 | Giant magnetoresistance based nanopositioner encoder An encoder (10) for a nanopostioner (24) includes a strip of magnetic bits (18) for producing discrete magnetic fields and a giant magnetoresistor (GMR) (14) which changes in electrical resistance in response to changes in the magnetic fi... | 09/06/2005 |
| 6728122 | Semiconductor memory device capable of rewriting data signal In DRAM, a bit line pair are connected to the respective gates of an N channel MOS transistor pair of a read gate, and a write data line pair are connected to the respective gates of an N channel MOS transistor pair of a write gate. Therefore, since neither of the r... | 04/27/2004 |
| 4931990 | Hardened bubble memory circuit An economical circuit arrangement permits disruption, during a nuclear event or single event upset, of operation in portions of a bubble memory system and in a computer connected thereto while maintaining integrity of data stored in the bubble memory. Onl... | 06/05/1990 |
| 4550983 | Magneto-optic device for the control of electromagnetic radiation 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 non-magnetic substrate material. A pair of electrical drive lines associated with a post element permit... | 11/05/1985 |
| 4276613 | Close-packed bubble propagation device A close-packed magnetic bubble propagation device includes a pattern having a plurality of propagation elements positioned in at least four adjacent rows. These elements are spaced to provide a period or spacing of bubbles in these rows of less than three... | 06/30/1981 |
| 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 |
| 4179749 | Defect tolerant scheme for a bubble lattice file A defect tolerant lattice file memory having means in the access column for annihilating lattice bubbles in a previously detected defective row thus eliminating an error in the digital information to be extracted from the lattice file. This annihilation m... | 12/18/1979 |
| 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 |
| 4172290 | Closed loop propagation pattern for bubble lattices A bubble storage system includes a closed loop propagation pattern suitable for use with a bubble lattice. The closed loop propagation pattern is folded and contains, for example, segments of a hexagonal lattice connected by 60° turns to obtain a close p... | 10/23/1979 |
| 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 |
| 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 |
| 4151599 | Magnetic bubble display units In a display unit utilizing magnetic bubbles, selective extinction of the magnetic bubbles in a matrix results in a pattern of letters and/or images which are combinations of the magnetic bubbles as picture elements. The present display unit has in-plane ... | 04/24/1979 |
| 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 |
| 4139904 | Bubble lattice files with selected access channel positioning A bubble lattice file has plural access channels, each access channel providing access to a bubble column aligned therewith for reading and/or writing in the aligned column. At least some of the access channels are spaced from a common reference by distan... | 02/13/1979 |
| 4138530 | Magnetic structures A magnetic structure having a high magnetic bubble mobility which has the property that magnetic bubbles can be transported in it at very high velocities while using comparatively weak driving fields, comprising a substrate having a (110) oriented deposit... | 02/06/1979 |
| 4125876 | Field access bubble lattice file device A bubble lattice file comprising a plurality of propagate elements of magnetic film material positioned as an overlay over bubble supporting material with each element spaced from the bubble material such that a spacing gradient is formed between the elem... | 11/14/1978 |
| 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 |
| 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 |
| 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 |
| 4058800 | Image pickup element and system utilizing magnetic bubbles A photomagnetic image pickup element and system, the element comprising a thin film of magnetic material capable of having magnetic bubbles formed therein where the intensity of the magnetic-bubble collapse field varies with temperature; a first conductor... | 11/15/1977 |
| 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 |
| 4052711 | Bubble lattice file using movable fixed lattice A lattice file using magnetic bubble domains which are arranged in a regular lattice which is moved or expanded to allow different operations, without requiring the need for bubble domains to be entered into or removed from the lattice. This distinguishes... | 10/04/1977 |
| 4052709 | Accessing information in a lattice array by dislocation punching A string of bubble domains having a length equal to that of a column portion to be extracted from a bubble domain lattice array is laterally punched into the input side of the array at the height of the desired column portion. As it enters the array it di... | 10/04/1977 |
| 4034357 | Patterns for use in the field access propagation of a bubble lattice A rotating field access pattern for use in the propagation of a bubble lattice is disclosed. The pattern contains two sets of parallel oblong elements that are substantially perpendicular to each other. Four specific permalloy patterns featuring one eleme... | 07/05/1977 |
| 4028685 | Field access propagation of bubble lattice A rotating field access pattern for use in the propagation of a bubble lattice is disclosed. The pattern contains a set of diamond shaped magnetic elements arranged in a regular array. The elements have two sides which are parallel to one bubble lattice a... | 06/07/1977 |
| 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 |
| 4015249 | Transfer of domains between fields A system suitable to transfer a bubble domain from one field to a second field where the field is the largest area formed by exposing a pattern and which all of the dimensions are critical is disclosed. A magnetic domain is propagated out of the first fie... | 03/29/1977 |
| 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 |
| 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 |
| 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 |
| 3982234 | Hard-magnetic film overlay apparatus and method for magnetic mobile domain control Stationary patterns of magnetic domains in a film layer of magnetically hard material define local field gradients for movement control of single-wall domains located in a contiguous sheet of magnetic "bubble" material. Suitable patterns of uniformly magn... | 09/21/1976 |
| 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 |
| 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 |
| 3953841 | Closed loop bubble lattice system and method for stabilizing A closed loop bubble lattice system and a method for stabilizing the same is disclosed. The closed loop bubble lattice system contains at least one portion being curved wherein the lattice parameter increases with the radius. In a preferred embodiment a r... | 04/27/1976 |
