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| Number | Title | Issue Date |
| 7859140 | Permanent magnet member for coil motor and voice coil motor The permanent magnet member 10 for a voice coil motor (VCM) in accordance with the present invention comprises a magnet body 1 including a shorter periphery 11, a longer periphery 12 located at a position separated from the shorter periph... | 12/28/2010 |
| 7365623 | Permanent magnet, magnetic device for use in MRI including the same, and manufacturing processes thereof The present invention provides a permanent magnet, comprising a cylinder formed with a permanent magnetic material. The cylinder comprises along a radial direction, a magnetic core and a magnetic sheath that are coaxial. The magnetic core is assembled in the magneti... | 04/29/2008 |
| 7295012 | Methods and apparatus for MRI shim elements A MRI shim element includes a plurality of thin wires extending substantially parallel to each other wherein each wire has cross sectional dimensions less than δsk, wherein δsk is the wire's skin depth. ... | 11/13/2007 |
| 7248047 | Shielding for mobile MR systems A trailer for housing a mobile MRI system has magnetic shielding in the form of a plurality of sheets of magnetic material which are supported within the trailer, by a rigid supporting structure or frame. The layers are arranged in a stacked or laminar configuration... | 07/24/2007 |
| 7199689 | High field NMR permanent magnetic structure A magnetic structure enclosing a prismatic cavity of regular polygonal cross-section is presented. The structure contains the field within the volume of the magnet without the need of an external ferromagnetic yoke, which makes it suitable for generating fields of s... | 04/03/2007 |
| 7161453 | Rotating and pivoting magnet for magnetic navigation A magnet assembly comprising a magnet mounted for pivoting about a first axis spaced from the magnet, and rotating about a second axis that is perpendicular to and intersects with the first axis. The magnet comprising a plurality of segments each with a magnetizatio... | 01/09/2007 |
| 7116197 | Magnet structure A magnet structure produces a field within a magnet gap. The field is provided at least in part by a pair of permanent magnets that are fixed in place by a frame. The frame fixes a magnet assembly that is adapted to hold the magnetic material composing the permanent... | 10/03/2006 |
| 7084632 | Permanent magnet for magnet resonance The present invention discloses a permanent magnet for magnetic resonance, which is used for a magnetic resonance imaging apparatus for medical diagnosis. The permanent magnet of the present comprises permanent magnetic material; pole heads; plates for eliminating v... | 08/01/2006 |
| 7079319 | Optical signal control device and method for utilizing same An optical device that receives polarization components of input light, spatially separates the polarization components, provides the polarization components with a angles of polarization and directs them onto a reflective element that has a plurality of states. The... | 07/18/2006 |
| 6970061 | Magnet structure A magnet structure produces a field within a magnet gap. The field is provided at least in part by a pair of permanent magnets that are fixed in place by a frame. The frame fixes a magnet assembly that is adapted to hold the magnetic material composing the permanent... | 11/29/2005 |
| 6963181 | Cathode-ray tube, cathode-ray tube apparatus, image display apparatus, and coil unit A color cathode-ray tube apparatus having: a glass bulb including a face panel, a funnel, and a neck; a deflection yoke attached to the funnel to surround thereof; and a color-selection electrode disposed inside the face panel. A pair of degaussing coils are wound a... | 11/08/2005 |
| 6946939 | Packaging plate for magnetic circuit, method for packaging magnetic circuit using the same, and magnetic circuit package It is an object to provide a package for a magnetic circuit, with which a leakage magnetic field escaping from an aperture of a magnetic circuit is reduced and the magnetic attraction acting on the packaging plates is lowered, thus reducing the number of packaging w... | 09/20/2005 |
| 6897751 | Pole-piece unit, method for assembling the same, and magnetic field generator A magnetic field generator comprises a pair of pole-piece units. The pair of pole-piece units respectively include plate yokes. Each of the plate yokes includes a surface facing the other's and provided with a permanent magnet group and a pole piece. The pole piece ... | 05/24/2005 |
| 6856224 | End caps on hollow magnets A compact permanent magnet structure is provided to produce a uniform magnetic biasing field confined to an internal cavity of a cylindrical magnetic flux source which eliminates the drawbacks, shortcomings, limitations and difficulties associated with an elongated ... | 02/15/2005 |
| 6781495 | Magnetic field generator and assembling method thereof A magnetic field generator comprises a pair of plate yokes opposed to each other with a space in between. Each plate yoke has a main surface on which a permanent magnet is disposed. A shielding magnet is provided each at a forward portion on an open side and at a re... | 08/24/2004 |
| 6763789 | Electromagnetic actuator with permanent magnet A system and method for increasing force density of a valve actuator particularly suited for use in actuation of intake and/or exhaust valves of an internal combustion engine include at least one electromagnet having a coil wound about a core, and an armature fixed ... | 07/20/2004 |
| 6707362 | Method and apparatus for focusing a magnetic field to treat liquids A magnetic device having an optimized geometry provides maximum beneficial physical effects of applying a magnetic field to a fluid. The device includes three relatively powerful magnets located radially about a fluid conduit approximately 60° apart from one anothe... | 03/16/2004 |
| 6653920 | Magnetic device having increased magnetic field intensity and unidirectional magnetic line of force A magnetic device includes a core received in a housing and having three or more outer peripheral surfaces and having one end received in the housing and the other end facing out of the housing. Three or more magnetic members are attached onto the outer p... | 11/25/2003 |
| 6630879 | Efficient magnet system for magnetically-assisted surgery A system for magnetically assisted surgery includes a magnetic support structure, a patient support structure and a magnet having at least four poles attached to the magnetic support structure so that the magnet provides a near-field magnetic field in an ... | 10/07/2003 |
| 6596163 | Device for treatment of carbon based fuel A magnetic device for treating carbon based fuels by exposing the fuel piping to intense magnetic fields. The south magnetic poles are placed adjacent to the pipe and the flux lines in the pipe are increased by the use of permeable steel bars adjacent to ... | 07/22/2003 |
| 6576128 | Magnet assembly for removing ferrous metal particles from fluids A magnet assembly includes a ring shaped magnet having a face with an inner surface that is removably attachable to a ferrous metal housing of a fluid filter. The face has a plurality of circumferentially spaced pairs of poles that concentrate the magneti... | 06/10/2003 |
| 6572778 | Method for separating magnetized substances from a solution The method includes placing a vessel containing a solution having magnetized substances into a magnetic device. The solution is then incubated in the device for a period of time sufficient to allow the magnetized substances to migrate radially toward the ... | 06/03/2003 |
| 6261450 | Magnetic source device The present invention of a magnetic source and condenser is applied directly outside on a pipe. The magnetic device comprises a series of iron pieces having curved contact surfaces on the same side, a magnet is placed between every two piece of iron, the ... | 07/17/2001 |
| 6084491 | Permanent magnetic reluctor structures and methods In the preferred embodiment, a variable magnetic reluctor structure comprng an iron yoke having two opposing "U"-shaped bodies, magnetic flux sources formed by portions of the yoke, a magnetic flux path, a working space and a reluctor space is provided. ... | 07/04/2000 |
| 6057656 | Magnet block assembly for insertion device Disclosed is a novel composite magnet assembly for an insertion device of the Halbach type or hybrid type to be inserted into the linear part of, for example, an electron accelerator to generate a sine-curved periodical magnetic field in the air gap betwe... | 05/02/2000 |
| 5976369 | Magnetic separation apparatus Biological assay systems often involve suspending magnetically attractable particles in a liquid, and later bringing down the particles from suspension and separating the formed pellet from the supernatant liquid. The invention provides magnetic systems f... | 11/02/1999 |
| 5798680 | Strapped open magnetic structure Strapped open magnetic structure, particularly useful in nuclear magnetic resonance imaging applications, which provides a substantially uniform magnetic field within a region of interest while allowing access by a surgeon to a patient via an opening at t... | 08/25/1998 |
| 5783981 | Magnetic reinitialization of thin film magnetoresistive reproducing heads at the suspension level of media drive manufacturing The magnetic states of MR reproducing heads are reinitialized during media drive manufacturing by applying initializing magnetic fields to the transducers after they have been manufactured and incorporated into media drive assemblies.... | 07/21/1998 |
| 5716520 | Magnetic fluid conditioner A magnetic flux fluid treating device for minimizing the discharge of hydrocarbons from internal combustion engines, eradicating scale and inhibiting its formation in water conduits and water handling equipment is formed by a coaxial soft iron tubular ass... | 02/10/1998 |
| 5596304 | Permanent magnet edge-field quadrupole Planar permanent magnet edge-field quadrupoles for use in particle accelerating machines and in insertion devices designed to generate spontaneous or coherent radiation from moving charged particles are disclosed. The invention comprises four magnetized r... | 01/21/1997 |
| 5557205 | Magnetic field generating apparatus for use in MRI In a magnetic field generating apparatus for use in MRI comprising cylindrical yokes, a pair of permanent magnets of a trapezoidal section opposed in parallel with each other in the cylindrical yokes with a predetermined gap being defined between each of ... | 09/17/1996 |
| 5515020 | Premagnetizing head A premagnetizing head for charging the magnetizable pigment of characters printed on a document includes a permanent magnet (10) whose one pole is connected to a magnetically conductive metal plate (12) which extends away from the magnet (10) in a directi... | 05/07/1996 |
| 5506558 | Unipolar composite magnets A unipolar magnet is composed of a plurality of magnetic units. Each magnetic unit is made up of a magnetic body, a paramagnetic or diamagnetic first layer which covers the entire magnetic body except for one of the poles, and a magnetically conductive se... | 04/09/1996 |
| 5502425 | Magnetic energy reinforcing device A magnetic energy reinforcing device including a base having an axial through hole and a plurality of chambers symmetrically spaced around said through hole, a plurality of magnets respectively mounted in each chamber on the base, and a plurality of antim... | 03/26/1996 |
| 5488342 | Magnet assembly for NMR A magnet assembly comprises a pair of substantially aligned, spaced apart first magnets (1,2) having like poles facing each other. A second magnet (3) is positioned adjacent the space between the first magnets with its magnetic axis transverse to the alig... | 01/30/1996 |
| 5475355 | Method and apparatus for compensation of field distortion in a magnetic structure using spatial filter A technique is provided for improving the homogeneity of the magnetic field within a cavity disposed inside a magnetic structure that has an opening to permit convenient access to an imaging region. The technique is based upon the step of inserting layers... | 12/12/1995 |
| 5468381 | Magnetic filter adapter An improved magnetic filter adapter for use with removable fluid system filters. The magnetic filter adapter of the present invention includes an adaptive filter housing removably mountable to a fluid system filter, magnet means for attracting metallic pa... | 11/21/1995 |
| 5458785 | Magnetic separation method Biological assay systems often involve suspending magnetically attractable particles in a liquid, and later bringing down the particles from suspension and separating the formed pellet from the supernatant liquid. The invention provides magnetic systems f... | 10/17/1995 |
| 5382875 | Stray magnetic field suppresser for CRT image displays A stray magnetic field suppression system for use in a CRT image display suppresses a stray magnetic field that emanates from the horizontal deflection coil of a beam-deflecting yoke which is energized by sawtooth waveform pulses from a horizontal oscilla... | 01/17/1995 |
| 5380430 | Magnetizing apparatus for treatment of fluids A set of magnetic assemblies for treating fluids including water and liquid and gaseous fuels wherein each assembly includes a construction of permanent magnets and pole pieces arranged to optimize a "Figure of merit" number defined as the integral of the... | 01/10/1995 |
