Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7441746 | Solenoid device and injection valve having the same An injection valve includes a housing that movably accommodates a needle. A movable core is axially movable together with the needle in the housing. A stationary core is fixed in the housing for forming a magnetic circuit together with the movable core. At least one... | 10/28/2008 |
| 7414504 | Laminated solenoid plunger for solenoid assembly A solenoid plunger for use in solenoid driven multi-line embossing systems is constructed of magnetic steel laminations that are attached to a center block which is machined to mount a solenoid shaft and anti-rotate pins. The laminations are attached to the center b... | 08/19/2008 |
| 7368041 | Method for controlling plasma density or the distribution thereof Method for manufacturing magnetron sputter-coated workpieces includes placing a substrate adjacent a magnetron source having a target cathode, generating above the target cathode, at least one plasma loop by an electron trap established by generating a magnetic fiel... | 05/06/2008 |
| 7350763 | Linear solenoid with adjustable magnetic force A linear solenoid includes a pole tube; a housing jacket that encloses the pole tube; a coil that encompasses the pole tube; and a displaceable armature that is received in the pole tube. An overlap range between the housing jacket and an axially displaceable compon... | 04/01/2008 |
| 7323962 | Magnet and method of forming uniform magnetic field for MRI system The present invention relates to the magnetic apparatus for magnetic resonance imaging system and method for forming uniform magnetic field. The magnetic apparatus comprises a field yoke for forming flux path, a first member of permanent magnet, provided on one end ... | 01/29/2008 |
| 7319326 | Sensor and magnetic field apparatus suitable for use in for unilateral nuclear magnetic resonance and method for making same A unilateral NMR sensor comprising a ferromagnetic yoke; a permanent magnet arranged on the yoke; a pole piece on the magnet; the pole piece including an air-pole piece interface surface whose shape corresponds to an equipotential contour of magnetic scalar potentia... | 01/15/2008 |
| 7205685 | Solenoid plunger system with an adjustable magnetic flux A solenoid plunger system for an electropneumatic pressure transducer, comprising at least partly—in a casing which focuses magnetic field lines M, in particular in the form of an iron casing—a solenoid plunger and a core, in particular in the form of an iron co... | 04/17/2007 |
| 7157653 | Magnetic latching switch A magnetic latching switch includes a housing having mounted therein a movable electrical control structure normally retained in a first position with a stationary electrical lug structure. The electrical control structure and the electrical lugs are held together b... | 01/02/2007 |
| 7144310 | Knife sharpener apparatus An infinitely adjustable knife sharpener apparatus is provided. The apparatus comprises a clamping mechanism having a first clamp member and a second clamp member for securing a knife blade therebetween. At least one infinitely adjustable guide rod assembly is also ... | 12/05/2006 |
| 7129627 | Color picture tube apparatus A ferrite core constituting a deflection yoke includes a plurality of convex portions in a ridge shape on an inner surface thereof. Among the plurality of convex portions, assuming that the convex portions in a range excluding a range of −20° to +20° with respec... | 10/31/2006 |
| 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 |
| 7053743 | Permanent magnet assembly and method of making thereof An imaging apparatus, such as an MRI system, contains at least one layer of soft magnetic material between the yoke and each permanent magnet. This imaging apparatus may be operated without pole pieces due to the presence of the soft magnetic material. The permanent... | 05/30/2006 |
| 6973711 | Method for making pieces for a magnetic resonance imaging magnet A method for producing a shim piece for a magnetic resonance imaging (MRI) magnet. The shim piece is used to form a shim of a magnet and is designed to suppress eddy currents in the shim created by the introduction of a gradient magnetic field. The shim piece is for... | 12/13/2005 |
| 6963261 | Magnetic anchoring module with a system for enabling/disabling and adjusting the magnetic anchoring force and related assemblies Magnetic module for the magnetic anchorage to a ferromagnetic surface of another magnetic, or ferromagnetic module, whose head includes: a first multipolar magnetic stator that in turn defines a multipolar magnetic anchoring surface, and a multipolar magnetic rotor ... | 11/08/2005 |
| 6958672 | System and method for magnetizing blocks on a magnet assembly of an MRI device A system and a method for magnetizing one of a plurality of substantially non-magnetized blocks disposed on a plate of a magnetic assembly used in an MRI device are provided. The system includes first and second arm portions operably coupled together. The system fur... | 10/25/2005 |
| 6940379 | Magnets with varying magnetization direction and method of making such magnets A permanent magnet in which the magnetization direction varies with location to optimize or restrict a magnetic field property in a selected direction at a selected point. The magnetic field property may be, for example, the transverse magnetic field, axial magnetic... | 09/06/2005 |
| 6864773 | Variable field magnet apparatus A magnet assembly for producing a varying magnetic field is provided wherein a plurality of permanent magnets are interposed between two members which are constructed of a ferromagnetic material. Each of the magnets is rotatable and has a north and south magnetic po... | 03/08/2005 |
| 6859123 | Methods and apparatus for positioning permanent magnetic blocks A method for positioning permanent magnetic blocks includes providing a plurality of magnetized blocks, positioning the magnetized blocks on a yoke in a row by applying a mechanical force at a first end of the row with a first clamping member and at a second end of ... | 02/22/2005 |
| 6843353 | Electro-magnetic clutch having axially moving coil An electromagnetic clutch assembly (10) has a housing (12, 14) and shaft (16) rotatably supported by the housing. At least one of the shaft extends out of the housing. A clutch plate (22) is mounted on the shaft (16) for rotation t... | 01/18/2005 |
| 6825668 | Static magnetic field generating apparatus and magnetic resonance imaging apparatus For the purpose of providing a static magnetic field generating apparatus employing permanent magnets that allows easy adjustment of a static magnetic field, eight grooves are provided in a columnar yoke and the other opposing columnar yoke, and the shape or materia... | 11/30/2004 |
| 6809619 | System and method for adjusting magnetic center field for permanent MRI magnetic field generator The present invention relates to a method and system for adjusting a magnetic center field of a magnetic field generator in an MRI. One embodiment of the presenting invention relates to a magnetic field generator system having a magnetic center field. This embodimen... | 10/26/2004 |
| 6800983 | Magnetic circuit structure, and power-generating device and electronic device using the same Opposing concave structures formed in an end portion 22b of a stator yoke 22 and an end portion 23b of a magnetic core 23 are mated in a staggered manner and are joined. An upper projecting portion 22b-1 | 10/05/2004 |
| 6781492 | Superconducting magnetic apparatus A superconducting magnet apparatus. By forming one or more holes in each of platelike ferromagnetic substances forming a magnetic shield for focusing the magnetic flux generated by superconducting coils, the flow of lines of magnetic flux is adjusted. Thereby, a sta... | 08/24/2004 |
| 6765466 | Magnetic field generator for magnetron plasma A magnetic field generator for confining plasma within a vacuum chamber is disclosed. The magnetic field generator produces a multi-pole magnetic field around a workpiece positioned within the vacuum chamber. The magnetic field generator is provided outside the vacu... | 07/20/2004 |
| 6703830 | Tunable magnetic device for use in a proximity sensor A tunable magnetic device which includes a permanent magnet in the shape of a ring, an inner aperture, a tuning member, and a field sensor secured to the permanent magnet. The tuning member may be a ferrous or magnetic material and may be secured to a non... | 03/09/2004 |
| 6670877 | Field adjusting mechanisms and methods for permanent magnet arrangement with backplate Apparatus and methods for the adjustment of a magnetic field produced by permanent magnet arrangements facing each other across an air gap include a series of ferromagnetic shim blocks individually adjustably positionable within the magnet arrangements to... | 12/30/2003 |
| 6664878 | Method for assembling magnetic members for magnetic resonance imaging magnetic field generator Disclosed herein is a method for assembling a magnetic field generator for a magnetic resonance imaging system. The method comprises: establishing an arrangement for a permanent magnet of a magnet assembly comprising a ferromagnetic yoke plate and a perma... | 12/16/2003 |
| 6597269 | Convergence coil structure for a deflection yoke and method of producing deflection yokes A deflection yoke includes a bobbin having a cavity formed in the longitudinal direction of the bobbin, and an adjusting coil having a magnetic core on which a thread is cut. The core inserted into the cavity is slidable in the longitudinal direction of t... | 07/22/2003 |
| 6535092 | Device for generating a variable magnetic field A device (1) for generating a variable composite magnetic field comprises top and bottom concentric ring members (3, 4) which define a main central axis (5) and a central area (4) within which the composite magnetic filed is formed. Rod-like permanent mag... | 03/18/2003 |
| 6476703 | Control unit of a valve mechanism The invention describes a control unit of a valve mechanism with an electromagnetic coil (1) where the electromagnetic coil (1) is electrically and mechanically connected to the control unit via a connection device which has an electrically conducting spr... | 11/05/2002 |
| 6411187 | Adjustable hybrid magnetic apparatus Adjustable hybrid magnetic apparatus for use in medical and other applications includes an electromagnet flux generator for generating a first magnetic field in an imaging volume, and permanent magnet assemblies for generating a second magnetic field supe... | 06/25/2002 |
| 6388401 | Color display device having quadrupole convergence coils The invention relates to a color display device comprising an in-line electron gun (5) for generating three electron beams (6,7,8), a deflection unit (51) for deflecting the electron beams (6,7,8) and a convergence unit (14') for dynamically influencing t... | 05/14/2002 |
| 6281775 | Permanent magnet arrangement with backing plate A permanent magnet arrangement has a pair of permanent magnet groupings supported by a C-shaped yoke. Each magnet grouping comprises a series of circular, concentrically-arranged permanent magnets in a support frame. An adjusting mechanism allows each cir... | 08/28/2001 |
| 6255928 | Magnet having a shim for a laminated pole piece A magnet having an imaging volume, a pole piece with a laminated portion including a first surface hole, a non-magnetizable first insert with an internally-threaded hole, and a first shim with a shape of an externally-threaded bolt. The first insert is po... | 07/03/2001 |
| 6157278 | Hybrid magnetic apparatus for use in medical applications Permanent magnet assemblies and hybrid magnetic apparatus are disclosed for use in medical applications, particularly permanent magnet assemblies for use in Magnetic Resonance Imaging (MRI) and/or Magnetic Resonance Therapy (MRT) to produce a volume of su... | 12/05/2000 |
| 6147578 | Method for designing open magnets and open magnetic apparatus for use in MRI/MRT probes An open yoked magnetic apparatus for producing a substantially homogenous magnetic field. The apparatus includes an open ferromagnetic yoke, and two complementary permanent magnetic assemblies attached to opposing sides of the yoke. Each magnet assembly i... | 11/14/2000 |
| 6128522 | MRI-guided therapeutic unit and methods Magnetic resonance information acquired by a movable magnetic resonance instrument is used to monitor hyperthermia treatments such as tissue ablation. The instrument may include both the magnetic resonance equipment and an energy applicator such as a high... | 10/03/2000 |
| 6029081 | Movable magnets for magnetic resonance surgery A magnetic resonance imaging apparatus (10) includes a couch (54) for supporting a region of interest of a subject (44) being examined in an examination region. A main magnet for generating a substantially uniform temporally constant main magnetic field t... | 02/22/2000 |
| 5977852 | Valve control device for controlling a valve for a pressure fluid A valve control device for controlling a valve for a pressure fluid includes a cylindrical coil having a longitudinal extent defining a longitudinal axis, an end surface, a coil body with a terminal pin carrier disposed on the end surface, and a coil wire... | 11/02/1999 |
| 5945901 | Magnetic head for magnetic pick-up tool A magnet head for a magnetic pick-up tool includes a magnet having a pick-up surface and a sleeve member having an open end and being slidably positioned over the magnet with the pick-up surface exposed through the open end, the sleeve member being made o... | 08/31/1999 |
