General Electric Company

Other

Pediatric Imaging Technology, LLC

Mark Gilbert Benz

Robert John Zabala

Bruce Alan Knudsen

William Thomas Carter

Melvin Robert Jackson

Thomas Robert Raber

John R Hughes

Paul Leonard Dupree

Thomas F Sawyer

Melissa L Murray

Russell Scott Miller

Michael R Eggleston

Lee E Rumaner

Neil A Johnson

Howard Roscoe Hart, Jr

Juliana Chiang Shei

Gregory Alan Steinlage

Michael F Henry

Charles Gitahi Mukira

Judson Sloan Marte

Gregory Reznikov

Wayne Charles Hasz

Bulent Aksel

Charles P Blankenship, Jr

William T Carter, Jr

Bernard Patrick Bewlay

Gerald Burt Kliman

Marshall Gordon Jones

Constantinos Minas

Herman A Nied

Louis E Hibbs, Jr

Juliana Ching Shei

Evangelos Trifon Laskaris

Paul A Siemers

Yuji Inoue

Colin Richard Wilson

Michael F Gigliotti, Jr

Kathleen Melanie Amm

Eric Scott Huron

Anthony Mantone

Edward Lee Raymond

Christopher G King

Israel S Jacobs

William Joseph Jones

Harold Jay Patchen

Theodore McCall Evenden

Liang Li

Paul Shadworth Thompson

Aldo Enrique Murut

Bin Wei

Andrew Philip Woodfield

Stephen Francis Rutkowski

Boris I Medovar

Andrew Lee Trimmer

Clifford Earl Shamblen

Ernest Wayne Balch

Franz Hugo

Ralph James Carl, Jr

Steven A Miller

Douglas J Snyder

Peter G Frischmann

Thomas Carson Tiearney, Jr

Samuel Vinod Thamboo

Duk Y Yoon

John Breunissen

Mark Edward Braaten

Manohar Gopalaswamy Kollegal

Richard W Lindberg

James Michael Gent

Lev Borisovich Medovar

Janel Koca Browning

Matthew W Benz

Karen A Lou

Mehran Mohsenian

Duk N Yoon

Ni De Zhen

Wang Biao

Renee M Rohling

Chen Pei Xin

Robert Donald Kissinger

Ping Huang

Paul Frederick Browning

Felix Guenter Muller

Anatoly Danilovich Riabtsev

Oleg Vladimirovich Tarlov

Vladimir Nikolayevich Radchenko

A method of manufacturing a magnetic resonance imaging (MRI) device is provided including providing at least one magnet positioned between a keeper device and a yoke, the keeper device being positioned at a pole region of the at least one magnet, positioning at least one pole device at the pole region of the at least one magnet, and removing the keeper device from the pole region to allow the at least one pole device to be positioned at the pole region of the at least one magnet.

Method of manufacturing a pole face for a permanent magnet MRI system with laminated structure

An electroslag-cold hearth (ESCH) system for refining or producing a desired metal or metal alloy is described. The system includes at least one cold hearth vessel capable of holding a pool of molten liquid metal and an overlying slag layer, and an ingot mold laterally off-set from the cold hearth. A source of raw material, e.g., a feed electrode, is positioned above the cold hearth, and fed into the molten slag in a refining operation. A flow-over dam separates the ingot mold from the cold hearth, preventing the flow of inclusions and other foreign bodies into the ingot mold. In some instances, a non-consumable electrode provides additional thermal energy to the slag. In the production operation, the metal source can be a salt from which the desired metal can be electrochemically extracted. Related methods for refining or producing metals such as titanium alloys are also described.

Apparatus for the production or refining of metals, and related processes

A focal track region of an x-ray anode in an example is electrochemically etched. In a further example, an x-ray anode comprises a thermally-compliant focal track region for impingement of electrons from an x-ray cathode to create an x-ray source. The thermally-compliant focal track region comprises a pattern of discrete relative expanses and gaps.

X-ray anode focal track region

A method of making a permanent magnet body is provided. The method includes providing a first precursor body comprising a plurality of blocks and magnetizing the first precursor body to form a first permanent magnet body. A recoil magnetization pulse may be applied to the permanent magnet body after the magnetization. The precursor body may be heated during magnetization. A power supply containing a battery may be used to energize a pulsed magnet used to magnetize the precursor body.

Method and apparatus for magnetizing a permanent magnet

A multi-filament superconducting wire in which the filaments comprise zirconia-stabilized ultra-fine grain NbSn. The superconducting wire is formed by wire-drawing a preform comprising a metallic matrix and at least one niobium alloy rod having zirconium and oxygen in solid solution and heat treating the drawn wire in the presence of tin to yield at least one continuous filament comprising ultra-fine grain NbSn having semi-coherent ZrOprecipitates disposed therein. The ZrOprecipitates serve to stabilize the ultra-fine grain microstructure of the NbSn at temperatures up to 1100&#xb0; C. and allows NbSn to maintain the ultra-fine grain microstructure when heat treated at temperatures that are greater than those previously used. By using higher temperatures to form NbSn, the time required for heat treatment can be significantly reduced.

Zirconia-stabilized multi-filamentary niobium-tin superconducting wire

A system and method for imaging a volume having a detector including a first atomic species with an absorption edge at a first wavelength. The system also includes a source having a second atomic species for emitting an ionizing energy. The second atomic species has a characteristic emission peak that substantially matches the absorption edge of the detector. A filter may be provided for blocking ionizing energy from the source in regions other than a region proximate the characteristic emission peak. Effective imaging with a lower radiation dose may be achieved with the system and method.

Ionizing radiation imaging system and method with decreased radiation dose

A stationary CT system comprising at least one annular x ray source assembly comprising a plurality of respective x ray sources spaced along the annular x ray source assembly. Each of the x ray sources comprises a respective stationary x ray target, an electron beam focusing chamber; an x ray channel; an electron beam source disposed in a spaced apart relationship with respect to the respective stationary x ray target; a vacuum chamber disposed in between the electron beam focusing chamber and an insulating chamber where the insulating chamber houses the electron beam source; a radiation window at a pre-defined angular displacement from the respective stationary x ray target and the x ray channel; and a target substrate attached to the respective stationary x ray target.

Stationary computed tomography system with compact x ray source assembly

Pole face for permanent magnet MRI with laminated structure

A Fe&mdash;B&mdash;R type permanent magnetic, consisting of: 13-19 atomic % R, where R consists essentially of a mixture of rare earth elements Nd and/or Pr, and Ce, where Ce is between 0.2 and 5.0 wt. % of R; 4-20 atomic % B, and the balance comprising Fe. In a preferred aspect, R comprises 15-16 atomic % B; of which Ce is approximately 0.5% and the remaining rare earths Pr and Nd are in a ratio of 3:1. A process of producing a Fe&mdash;B&mdash;R permanent magnet as described above, and a Fe&mdash;B&mdash;R magnetic material made by such process.

Permanent magnetic materials of the Fe-B-R tpe, containing Ce and Nd and/or Pr, and process for manufacture

A casting system and method for producing a metal casting is provided. The metal casting can comprise a fine-grain, homogeneous microstructure that is essentially oxide- and sulfide-free, segregation defect free, and essentially free of voids caused by air entrapped during solidification of the metal from a liquidus state to a solid state. The casting system can comprise an electroslag refining system; a nucleated casting system; and a cooling system that cools the metal casting so as to cool a liquidus portion of the metal casting. The metal casting is cooled in a manner sufficient to provide a microstructure that comprises a fine-grain, homogeneous microstructure that is essentially oxide- and sulfide-free, segregation defect free, and essentially free of voids caused by air entrapped during solidification from a liquidus state to a solid state.

Clean melt nucleated casting systems and methods with cooling of the casting

Permanent magnets, devices including permanent magnets and methods for manufacture are described with the permanent magnet comprising, for example: iron-boron-rare earth alloy particulate having an intrinsic coercive force of at least about 1591 kiloamperes/meter (about 20 kiloOersteds) and a residual magnetization of at least about 0.8 tesla (about 8 kiloGauss), wherein the rare earth content comprises praseodymium, a light rare earth element selected from the group consisting of cerium, lanthanum, yttrium and mixtures thereof, and balance neodymium; and a binder bonding the particulate.

Permanent magnet for electromagnetic device and method of making

A multi-filament superconducting wire in which the filaments comprise zirconia-stabilized ultra-fine grain Nb Sn. The superconducting wire is formed by wire-drawing a preform comprising a metallic matrix and at least one niobium alloy rod having zirconium and oxygen in solid solution and heat treating the drawn wire in the presence of tin to yield at least one continuous filament comprising ultra-fine grain Nb Sn having semi-coherent ZrO precipitates disposed therein. The ZrO precipitates serve to stabilize the ultra-fine grain microstructure of the Nb Sn at temperatures up to 1100&deg; C. and allows Nb Sn to maintain the ultra-fine grain microstructure when heat treated at temperatures that are greater than those previously used. By using higher temperatures to form Nb Sn, the time required for heat treatment can be significantly reduced.

An electroslag refining apparatus includes upper and lower integral crucibles, with the lower crucible having a drain. In situ hot start is effected by depositing in the lower crucible a pre-refined starter. The starter is melted in the lower crucible to form a starter pool, and slag is deposited atop the starter pool for being melted thereby to develop a slag pool thereatop. An ingot electrode is lowered through the upper crucible to immerse a tip thereof into the slag pool. The electrode is powered to effect resistance heating of the slag pool to melt the electrode tip. The slag and starter pools are increased in volume into the upper crucible, with the drain then being opened to effect steady state operation.

In situ electroslag refining hot start

A permanent magnet for an MRI scanner is made by removing extraneous elements from an ore containing rare earth elements to leave elements Pr and Nd therein, and then selectively stripping therefrom a portion of the element Nd as a byproduct to leave an ore residuum including both elements Pr and Nd therein. The residuum is alloyed with a transition metal to form an alloy therewith. The alloy is then formed into a rare earth permanent magnet configured for use in the MRI scanner.

Residuum rare earth magnet

Growing community of inventors

Burnt Hills, NY, United States of America

Mark Gilbert Benz