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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 8049503 | Position detecting system and position detecting method A system includes a body-insertable apparatus disposed while introduced in a subject in a detection space, and an external apparatus disposed on the outside of the subject. The body-insertable apparatus includes a first switch for connecting/interrupting a resonance... | 11/01/2011 |
| 7977946 | Interventional MRI magnetic field generator based on permanent magnets A magnet assembly primarily for use in MRI Interventional applications having an array of four mam permanent magnets that are spaced-apart and arranged into a ring-like geometry with six easy-access openings The magnetization direction in each permanent magnet is an... | 07/12/2011 |
| 7924011 | Ferromagnetic shield for magnetic resonance imaging A cryocooler assembly includes a ferromagnetic shield and a moveable rare-earth regenerator for recondensing of a cooling liquid for cooling of a superconductive magnet of a magnetic resonance imaging apparatus. The ferromagnetic shield effectively provides depletio... | 04/12/2011 |
| 7898257 | Open yoke magnet assembly An open yoke MRI apparatus has a set of permanent magnets arranged at the inner surfaces of the yoke and spaced apart from one another. A set of annular permanent magnets is included in each magnet arrangement, including a set with trapezoidal cross-sections to prov... | 03/01/2011 |
| 7876100 | Method and apparatus for actively controlling quench protection of a superconducting magnet A method and apparatus for actively controlling quench protection of a superconducting magnet includes a magnetic resonance imaging (MRI) system and a computer readable storage medium having stored thereon a computer program comprising instructions which when execut... | 01/25/2011 |
| 7847555 | MRI apparatus with high-resistance magnet A magnet which includes ferromagnetic powder to be mainly a mother phase containing iron or cobalt. The ferromagnetic powder is provided with a high-resistance layer which has a resistance higher than or equal to ten times as high as a resistance of the mother phase... | 12/07/2010 |
| 7843196 | Compact whole-body open magnet for magnetic resonance imaging A compact whole-body open circular magnet system for MRI purposes includes a protrusion overhanging the central homogeneous field region. The overhanging protrusion permits a reduction of the total magnet homogeneity requirements of the MRI system. Further reducing ... | 11/30/2010 |
| 7759938 | Apparatus and method for varying magnetic field strength in magnetic resonance measurements Apparatus and method for varying field strength in a magnetic resonance system while keeping a relatively uniform magnetic field distribution. In an embodiment, a two-pole, generally u-shaped magnet assembly generates a static and uniform magnetic field. The magnet ... | 07/20/2010 |
| 7755358 | Method to determine the design of a basic magnet of a magnetic resonance apparatus with at least one gradient coil system The method for determination of the design of the basic magnet of a magnetic resonance apparatus with at least one gradient coil system, the design of the basic magnet is determined by taking into consideration forces acting on the at least one gradient coil system ... | 07/13/2010 |
| 7746075 | Methods, systems, circuits and computer program products for determining polarization of a gas A circuit for determining a polarization of a gas. The circuit includes a polarimetry circuit having an NMR coil that is configured to excite a polarized gas and that is responsive to an electromagnetic signal generated by the excited, polarized gas. The polarimetry... | 06/29/2010 |
| 7737696 | Magnetic resonance scanner with a longitudinal magnetic field gradient system In a magnetic resonance scanner, a main magnet system (10) is wound to generate a longitudinally directed main magnetic field (B0) at least in a scanning region (20). The main magnet system includes a central magnet winding region (30... | 06/15/2010 |
| 7733090 | Magnetic field generator There is provided a magnetic field generator which is capable of generating a uniform magnetic field of a desired intensity easily and stably without increasing running cost. The magnetic field generator includes a pair of plate yokes. The plate yokes have opposed s... | 06/08/2010 |
| 7733089 | Transportable magnetic resonance imaging (MRI) system A portable MRI or NMR imaging system comprising a cryogen vessel housing cooled equipment, said system being housed within a transportable container, said container being divided into at least three sections. A first section provides accommodation for an operator an... | 06/08/2010 |
| 7701218 | Magnet assembly A magnet assembly for use in carrying out nuclear magnetic resonance experiments on a body or sample. The assembly comprises a set of superconducting coils within a cryostat, located about a bore, and arranged to generate a substantially uniform magnetic field in a ... | 04/20/2010 |
| 7679365 | Current lead of superconducting magnet of magnetic resonance system A current lead for the superconducting magnet of a magnetic resonance system, the superconducting magnet being refrigerated by a cold head, has a positive current lead and a negative current lead electrically connected to the superconducting magnet for magnetization... | 03/16/2010 |
| 7667462 | Nuclear magnetic resonance module A nuclear magnetic resonance apparatus that may be used in connection with a variety of different tools, including a down-hole side-wall coring tool as well as with manufacturing process controllers. In one embodiment, the nuclear magnetic resonance apparatus may in... | 02/23/2010 |
| 7639013 | Thermal controlling method, magnetic field generator and MRI apparatus With a view toward implementing a thermal controlling method for making reversible a temperature characteristic of a magnetic field generator using permanent magnets small in Hcj, a magnetic field generator whose temperature characteristic is reversible, using perma... | 12/29/2009 |
| 7615998 | Method and apparatus for actively controlling quench protection of a superconducting magnet A method and apparatus for actively controlling quench protection of a superconducting magnet includes a magnetic resonance imaging (MRI) system and a computer readable storage medium having stored thereon a computer program comprising instructions which when execut... | 11/10/2009 |
| 7579837 | Arrangement for magnetic field measurement The invention concerns an arrangement for magnetic field measurement of a measurement object (in particular a gradient coil in a magnetic resonance apparatus) with a magnetic field sensor that is designed to measure a magnetic field of the measurement object and wit... | 08/25/2009 |
| 7541811 | Apparatus for electron spin resonance CT A compact, lightweight, and easy-to-use ESR-CT apparatus including a magnetic field leak line (5-G line) which is capable of imaging a small animal, such as a mouse, within 15 minutes, and of observing a desired region with a spatial resolution of 1 mm or less. A pe... | 06/02/2009 |
| 7541812 | MRI apparatus, NMR analyzer, and gantry A magnetic resonance imaging apparatus includes a static magnetic field generating unit, a main coil (gradient magnetic coil), a radio frequency coil, and a shimming structure unit. The shimming structure unit includes first iron shims and second iron shims. The fir... | 06/02/2009 |
| 7538553 | Magnetic structure for MRI machines and MRI machine particularly for orthopedic of rheumatologic applications Magnetic structure for MRI machines, which machine has a U-shaped or annular, that is O-shaped geometry having two opposite poles between which a magnetic field is generated and are borne at a predetermined distance one with respect to the other by a magnetic yoke h... | 05/26/2009 |
| 7518370 | Low eddy current vacuum vessel and method of making same A vacuum vessel assembly includes an inner cylinder and an outer cylinder formed of a material in which eddy currents are substantially not produced. The inner cylinder includes a first and second half having an annular flange thereon. A plurality of metal interface... | 04/14/2009 |
| 7514928 | Superconducting magnet configuration with reduced heat input in the low temperature regions The invention concerns a magnet configuration comprising a superconducting magnet coil (1) within which a gradient system is to be switched. All low temperature oscillation systems (R1) with a temperature T1 | 04/07/2009 |
| 7504826 | Superconducting magnet and MRI apparatus using the same A superconducting magnet of the present invention includes a switching element that closes its output side (operation side) when the voltage on its input side is smaller than a predetermined value and opens the output side when the voltage on the input side is large... | 03/17/2009 |
| 7468606 | Vacuum housing for a magnetic resonance apparatus Disclosed is a vacuum housing for a magnetic resonance apparatus having a recess for leading through lead wires to elements located inside the vacuum housing, and a first lead-through bushing module. The first lead-through bushing module is provided with a first clo... | 12/23/2008 |
| 7466133 | Systems, methods and apparatus of a magnetic resonance imaging system to produce a stray field suitable for interventional use Systems, methods and apparatus are provided through which in some embodiments a magnetic resonance imaging (MRI) system includes one or more magnetic shield coils positioned asymmetrically in the casing and also positioned in close proximity to one of two apertures ... | 12/16/2008 |
| 7423431 | Multiple ring polefaceless permanent magnet and method of making A permanent magnet assembly for an imaging apparatus having a permanent magnet body having a first surface and a stepped second surface which is adapted to face an imaging volume of the imaging apparatus, wherein the stepped second surface contains at least four ste... | 09/09/2008 |
| 7420372 | Magnetic resonance device There is described a magnetic resonance device incorporating at least one first component part, which when the magnetic resonance device is operating oscillates, attached by at least one local load-bearing joint to at least one second oscillation-sensitive component... | 09/02/2008 |
| 7408349 | Configurable matrix receiver A configurable matrix receiver comprises a plurality of antennas that detect one or more signals. The antennas are coupled to a configurable matrix comprising a plurality of amplifiers, one or more switches that selectively couple the amplifiers in series fashion, a... | 08/05/2008 |
| 7403011 | Self-shielded packaging for circuitry integrated with receiver coils in a imaging system An improved magnetic resonance (MR) imaging system (10) is provided. A plurality of receiver coils (12) may be configured to supply respective coil output signals based on a plurality of magnetic resonance response signals sensed by the receiver coils.... | 07/22/2008 |
| 7403009 | Magnetic gradient winding system comprising circular solenoid coils In order to produce field strength gradients (x,y) for a NMR machine, the curve-shaped gradients are substituted by coils arraigned in tubes. Said tubes are distributed on the annular circumference (6) of the examination space of the tunnel NMR machine. Said ... | 07/22/2008 |
| 7397244 | Gradient bore cooling providing RF shield in an MRI system A magnetic resonance imaging (MRI) device for imaging a volume includes a main magnet for generating a magnetic field, an insulator sheet formed into a tube extending along an axis, a gradient coil disposed on an outside surface defining the tube for manipulating th... | 07/08/2008 |
| 7394927 | Iterative method of determining a spatial distribution of values of a property An iterative method determines a spatial distribution of values of a property of an object, and particularly values of its absorption, in an examination region, on the basis of measured values that values are acquired with a measuring device, and particularly with a... | 07/01/2008 |
| 7394255 | Single-sided magnetic resonance magnet assembly Magnetic resonance apparatus is provided comprising a magnet having a plurality of pairs of coils arranged in respective substantially parallel planes. The coils in each pair are operable in a counter-running manner when in use so as to generate a region of magnetic... | 07/01/2008 |
| 7391215 | NMR apparatus A magnetic assembly for a nuclear magnetic resonance apparatus includes a number of primary permanent magnets 1 disposed in an array about a longitudinal axis, the arrangement and/or characteristics of the plurality of magnets being such so as to create a zon... | 06/24/2008 |
| 7382134 | Superconducting magnet apparatus for MRI In a superconducting magnets for MRI configured to generate a homogeneous magnetic field and a gradient magnetic field in a space between a top superconducting magnet and a bottom superconducting magnet, the bottom superconducting magnet is provided with a supportin... | 06/03/2008 |
| 7375528 | Shielded, asymmetric magnets for use in magnetic resonance imaging Magnetic resonance systems are provided which employ a shielded, asymmetric magnet to produce an offset dsv. The magnets include at least a first coil C1, which carries current in a first direction, and two coils C2 and C3, which are... | 05/20/2008 |
| 7372275 | Gradient coil apparatus and method of assembly thereof A gradient coil assembly and a method for manufacturing the gradient coil assembly is provided. The gradient coil assembly includes an insulator sheet formed into a tube extending along an axis. The assembly further includes a first electrically conductive sheet dis... | 05/13/2008 |
| 7372274 | Methods and devices configured for dissolving hyperpolarised solid material with a solvent within a cryostat for NMR analyses The present invention relates to devices and method for dissolving solid polarised material while retaining a high level of polarisation. In an embodiment of the present invention a material is polarised in a strong magnetic field in a cryostat 2 and then bro... | 05/13/2008 |
