Using Magnetic Force Patents (Class 210/695)
  • Patent number: 8153060
    Abstract: An automatic analyzer includes a B/F separator including a reaction vessel holding unit provided with magnets disposed around a reaction vessel held on the reaction vessel holding unit and a rotating device for rotating the reaction vessel holding unit holding the reaction vessel about an axis of rotation aligned with the center axis of the reaction vessel or an axis of rotation parallel to and separated by a distance from the center axis of the reaction vessel. Both magnetic force and centrifugal force are exerted simultaneously on a specimen contained in a reaction vessel to capture magnetic particles contained in the liquid contained in the reaction vessel at a high capturing efficiency.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: April 10, 2012
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kenichiro Nishiki, Hajime Yamazaki
  • Publication number: 20120080384
    Abstract: The present invention teaches a method and apparatus to quickly and inexpensively implement advanced filtration to engines and systems using spin-on oil filter by using a system adapter sandwiched between the spin-on oil filter and the engine block affixed by a nipple adapter. The system adapter has the ability to make quick hydraulic connection to the inlet and outlet of a bypass grade or advanced filter, where oil is super cleaned, without modifications to the engine as is the paradigm by traditional bypass filtration systems and without removing any lubricant from the engine or system that the present invention is connected to, as is the paradigm of traditional bypass filtering systems.
    Type: Application
    Filed: November 1, 2010
    Publication date: April 5, 2012
    Inventor: Adan Reinosa
  • Publication number: 20120080360
    Abstract: Systems and methods for the manipulation of particles within channels such as microfluidic channels are provided. In one set of embodiments, magnets are positioned around a channel. As a fluid containing magnetic and non-magnetic particles flows through the channel, the magnetic field created by the magnets can be used to transport the magnetic and/or non-magnetic particles to desired locations within the channel, which may useful in some cases for causing some separation of the particles. For example, the magnetic field may be used to transport magnetic or non-magnetic particles from a core fluid to a surrounding sheath fluid. In some cases, the magnetic field is used to transport non-magnetic particles to a small volume within the channel (e.g., a single-file row within the channel).
    Type: Application
    Filed: April 8, 2010
    Publication date: April 5, 2012
    Applicant: President and Fellows of Harvard College
    Inventors: Howard A. Stone, Mara G. Prentiss, Pierre Striehl, Efraim Feinstein
  • Patent number: 8137903
    Abstract: A method for separating components from a patient sample is provided. In particular, the present invention provides a method for the separation of red blood cells or red blood cell components from a patient sample by the use of magnetic beads.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: March 20, 2012
    Assignee: Cytyc Corporation
    Inventors: Howie Kaufman, Lawrence Burg
  • Patent number: 8123954
    Abstract: The invention is a process that utilizes a device or processor that includes an elongated housing comprising a core enclosed by a magnetic component in combination with an electrical return path, which affects the electrons within fluids, thereby separating, for example, metals and organic or inorganic materials from fluids, in order to achieve desired fluid composition and properties.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: February 28, 2012
    Inventor: William Steven Lopes
  • Patent number: 8119010
    Abstract: This invention relates to an improved cake-filtration solid-liquid separation process wherein the improvement comprises simultaneously subjecting the solid-liquid mixture to a homogeneous magnetic field, a magnetic field gradient or both and cake-filtration to accomplish separation.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: February 21, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Karsten Keller, Christopher M. Rey, Benjamin Fuchs, Christian Hoffmann
  • Publication number: 20120039790
    Abstract: A nanotube separation method includes depositing a tag on a nanotube in a nanotube mixture. The nanotube has a defect and the tag deposits at the defect where a deposition rate is greater than on another nanotube in the mixture lacking the defect. The method includes removing the tagged nanotube from the mixture by using the tag. As one option, the tag may contain a ferromagnetic material and the removing may include applying a magnetic field. As another option, the tag may contain an ionic material and the removing may include applying an electric field. As a further option, the tag may contain an atom having an atomic mass greater than the atomic mass of carbon and the removing may include applying a centrifugal force to the nanotube mixture. Any two or more of the indicated removal techniques may be combined.
    Type: Application
    Filed: October 18, 2011
    Publication date: February 16, 2012
    Applicant: Micron Technology, Inc.
    Inventor: Gurtej S. Sandhu
  • Patent number: 8105848
    Abstract: An embodiment of the invention relates to a device comprising (1) an array of electromagnetic elements comprising coils, metal cores, and metal core heads, and (2) a controller that is adapted to control a current for one or more coils individually, to vary the current for said one or more coils individually, to reverse the current for one or more coils individually, and to generate a specific magnetic flux distribution and gradient across two or more coils; wherein the metal core head is at one end of the coil and the metal core head has a geometry to create a desired magnetic flux, intensity and gradient, in a region of interest between two adjacent coils; further wherein the device is functionally coupled to a fluidic device to concentrate and transport magnetic particles in a fluid without fluidic movement of the fluid.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: January 31, 2012
    Assignee: Intel Corporation
    Inventors: Xing Su, Kenneth Schwartz, Liming Wang, David Schwartz, Mineo Yamakawa
  • Patent number: 8105493
    Abstract: It is intended to provide a method capable of simply aggregating magnetic particles having a surface modified with a thermoresponsive polymer at a given temperature without heating or cooling an aqueous solution containing the magnetic particles, and a separation method and a detection method of a substance to be detected in a sample using the method. The method of separating a substance to be detected from a sample includes the steps of: mixing an adsorbent and the sample in an aqueous solution to adsorb the substance to be detected on the adsorbent, aggregating the adsorbent by changing a salt concentration in the aqueous solution; and collecting the adsorbent from the aqueous solution by a magnetic force, wherein said adsorbent comprises a magnetic particle of an average particle size of 50 to 1000 nm, a surface of which is modified with a thermoresponsive polymer and is immobilized with a substance having an affinity for the substance to be detected.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: January 31, 2012
    Assignee: JNC Corporation
    Inventors: Yuki Takahashi, Noriyuki Ohnishi, Xiaomao Xie
  • Publication number: 20120018382
    Abstract: Disclosed are magnetic nanoparticles and methods of using magnetic nanoparticles for selectively removing biologics, small molecules, analytes, ions, or other molecules of interest from liquids.
    Type: Application
    Filed: April 25, 2011
    Publication date: January 26, 2012
    Applicant: ADVANTAGEOUS SYSTEMS, LLC
    Inventor: Adam L. Stein
  • Patent number: 8101138
    Abstract: A centrifugal micro fluidic system and a centrifugal magnetic position control device used in the centrifugal micro fluidic system for controlling the position of magnetic beads are provided. The centrifugal micro fluidic system comprising, a rotatable platform; a micro fluidic structure which is disposed in the platform; and a plurality of objects which include functional groups on surfaces thereof so as to capture a target material from the fluid and carry the target material while being suspended in and separated from the fluid in the micro fluidic structure, wherein the movements of the objects are controlled by a force affecting the objects differently compared to the force's effect on the fluid. When the objects are made of a magnetic material, the force may be a magnetic force applied by the centrifugal magnetic position control device.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: January 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-gun Lee, Yoon-kyoung Cho, Beom-seok Lee, Jong-myeon Park
  • Patent number: 8097166
    Abstract: This invention offers effective and efficient method to produce and to use LIQUID defined as activated liquid which contains sufficient amount of micro bubbles of diameter less than 10 micrometers. LIQUID exhibits very useful properties for the purification of liquid, sterilization, extinguishment of undesirable bubbles, preservation of freshness of food, storage of gas in liquid, the decomposition of pollutants etc. The method to produce LIQUID comprises a means to rotate a rotor installed in a fixed tube wherein the rotor and the fixed tube are provided with a set of permanent magnets and a set of linear protuberances, and liquid and gas are introduced in the gap formed between the fixed tube and the rotor by pumping means driven by the motor. The micro bubbles are effectively produced with the repulsive magnetic field generated by the S (or N) pole of at least 30% of the whole magnets faced with the said gap.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: January 17, 2012
    Inventor: Takeshi Nakashima
  • Patent number: 8097185
    Abstract: A composition of and method for forming activated carbon with magnetic properties for magnetic separation of the activated carbon from a liquid being treated is disclosed wherein a solution iron magnetic precursor is intimately mixed or absorbed into a porous carbon precursor or mixed with a solution or meltable carbon precursor to form an essentially homogeneous mixture or solution that when dried and pyrolized forms activated carbon particles with magnetic material evenly dispersed throughout the activated carbon material. The activated carbon particles may be of fine particle size, even powdered, and still retain magnetic properties sufficient for magnetic separation. In a particular aspect of the invention, a carbon precursor of soft wood is soaked in a solution of a ferric salt, dried, pyrolized and activated.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: January 17, 2012
    Assignee: University of Utah Research Foundation
    Inventors: Jan D. Miller, Gustavo A. Munoz, Saskia Duyvesteyn
  • Patent number: 8097164
    Abstract: A process for selectively removing contaminant ions from a solution includes: a) contacting the solution with magnetic particles coupled to selectively chelating ion exchange functionality containing moieties prepared by: i) activating carboxyl groups on the selectively chelating ion exchange functionality containing moieties by the formation of an acyl fluoride, and ii) reacting the acyl fluoride with the magnetic particles, the magnetic particles having a particle size of less than 10 microns; b) allowing the chelating functionality coupled magnetic particles to selectively bind one or more of the contaminant ions; and, c) extracting the chelating functionality coupled magnetic particles and contaminant ions from the solution by magnetic filtration.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: January 17, 2012
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Sean Paul Bushart, David Bradbury, George Elder, Ilona Pascual
  • Patent number: 8092673
    Abstract: A treatment device for magnetically treating liquid in a liquid container includes a container holder to receive the liquid container. An active cooling unit is associated with the container holder to cool the liquid within the liquid container. At least one magnet associated with the container holder to generate a magnetic field within the liquid in the liquid container.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: January 10, 2012
    Assignee: Omega Patents, L.L.C.
    Inventor: Kenneth E. Flick
  • Publication number: 20120000857
    Abstract: The present invention relates to a process for separating at least one first material from a mixture comprising this at least one first material, at least one second material and at least one third material, which comprises at least the following steps: (A) contacting of the mixture comprising at least one first material, at least one second material and at least one third material with at least one hydrocarbon in an amount of from 0.01 to 0.
    Type: Application
    Filed: February 22, 2010
    Publication date: January 5, 2012
    Applicants: SIEMENS AKTIENGESELLSCHAFT, BASF SE
    Inventors: Imme Domke, Alexej Michailovski, Norbert Mronga
  • Patent number: 8088285
    Abstract: An apparatus for mixing and separating magnetic particles in a liquid comprises a holder having a plurality of apertures configured as an array of rows and columns and a plurality of containers capable of receiving liquid containing magnetic particles, each container being sized to be placed in one of the apertures; plural magnets capable of being moved relative to the containers between a first position and a second position to change the position of the magnets and magnetic particles in the container; and a drive mechanism for moving the magnets between positions at a sufficiently high speed that the particles do not settle down due to gravitational forces during motion between the first and second positions.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: January 3, 2012
    Inventor: Iqbal Waheed Siddiqi
  • Patent number: 8088287
    Abstract: An automatic, self-regulating method of water treatment for use in water circulating towers in which water is evaporated, and make up water is added, with components which synergistically function to cut chemical, energy, water, corrosion, pollution, and maintenance costs, by passing the water through a Water Conditioning unit to prevent adhering evaporation scale deposits along with their content of concentrated biofouling nutrients from forming on the flooded surfaces of the tower and its associated water flow circuit, adding a trace level of iodine to the input make-up water to enhance the further disinfection of nutrient-deprived surfaces from any residual biofilm and chance pathogen contaminations, and adding a trace level addition of zinc ions in the water such as by an assured treatment feeder to the input make-up flow for inhibiting residual iodine-resistant algal and bacterial organisms of hazard for restoring bionutrient tower conditions, such as within sun-lit environments, and apparatus for carryi
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: January 3, 2012
    Assignee: Evandtec, Inc.
    Inventors: Frederick James Dart, John Owen Richmond
  • Patent number: 8088284
    Abstract: A system for measuring the concentration of magnetic ballast in a moving slurry including a detection conduit surrounded by a set of coaxial detection coils configured to receive the moving slurry, a reference conduit surrounded by a set of coaxial coils, an AC power source for establishing a magnetic field in one of the detection coils and one of the reference coils, and a measurement subsystem for measuring the differential induced voltage between one of the set of coaxial detection coils and one of the set of coaxial reference coils to determine the concentration of the magnetic ballast in the moving slurry.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: January 3, 2012
    Assignee: Cambridge Water Technology, Inc.
    Inventors: Simone Klyamkin, Steven Woodard
  • Publication number: 20110315635
    Abstract: The embodiments relate to a device and to a method for concentrating and detecting cells in flowing media, in particular magnetically marked cells in complex media such as blood. For this purpose, at least one magnet is used, said magnet being coupled to at least one magnetoresistance.
    Type: Application
    Filed: March 3, 2010
    Publication date: December 29, 2011
    Inventors: Oliver Hayden, Mafred Rührig
  • Patent number: 8084275
    Abstract: A magnetic composite body comprising magnetic nanoparticles having a number average particle diameter of 1 to 50 nm and having a compound represented by formula (I) fixed on their surfaces, and a method comprising bringing the magnetic composite body into contact with a test piece followed by magnetic separation: R1O—(CH(R2)CH2O)n-L-X ??Formula (I) wherein R1 represents a hydrogen atom, an alkyl or alkenyl group having a carbon chain length of 1 to 20, or a substituted or unsubstituted, aryl or heterocyclic group; R2 represents a hydrogen atom or a methyl group; L may be present or not present, and, when L is present, L represents an alkylene or alkenylene group having a carbon chain length of 1 to 10 which may have a branched chain or a substituent; X represents a hydrogen atom, a carboxylic acid group, a phosphoric acid group, or a sulfonic acid group; and n represents an integer of 1 to 10.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: December 27, 2011
    Assignee: Fujifilm Corporation
    Inventors: Hiroyuki Hirai, Masayoshi Kojima
  • Publication number: 20110309026
    Abstract: A method and system for efficient oil spill cleanup are disclosed. Inserting magnetic filings in the oil magnetizes the spilled oil. An electromagnetic boom associated with an oil spill cleanup apparatus are used to create a magnetic field proximate to the electromagnetic boom. The magnetic field draws the magnetized oil toward the boom. The magnetic field is periodically switched on and off to create a pumping effect and draws the magnetized oil to a collection apparatus. The electromagnetic boom is directed through the effected environment using a thruster on the distal end of the boom.
    Type: Application
    Filed: May 20, 2011
    Publication date: December 22, 2011
    Inventor: Arden Ayube Warner
  • Publication number: 20110306500
    Abstract: Disclosed is a method and system that includes treating a material by applying a sol-gel derived composition loaded with a first sorbate under conditions effective to treat the material with the first sorbate.
    Type: Application
    Filed: June 9, 2011
    Publication date: December 15, 2011
    Inventor: Paul L. Edmiston
  • Patent number: 8075771
    Abstract: This invention relates to apparatus for carrying out continuous or batch centrifugation solid-liquid separation processes in which the solid-liquid mixture is subjected to magnetic field gradients and centrifugation.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: December 13, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Benjamin Fuchs, Christian K. Hoffmann, Karsten Keller
  • Publication number: 20110290736
    Abstract: A method and device for removing scaling from the interior of a conduit used in a heat transfer device, the method comprising the steps of diverting a portion of the fluid from the conduit, passing the diverted portion through a filter, passing the filtered portion through a magnetic field, and reintroducing the fluid into the conduit. The method of the present invention can also be used with chillers to control bacterial growth therein.
    Type: Application
    Filed: March 14, 2011
    Publication date: December 1, 2011
    Inventor: Claude L. Hebert
  • Patent number: 8066885
    Abstract: A process for the beneficiation of carbonate mineral substrates by magnetic separation is defined herein wherein a phosphorus or nitrogen containing organic compound or reagent and a plurality of magnetic particles are intermixed with a carbonate containing mineral substrate, a magnetic field is applied to the mixture and a value mineral is thereby separated from a non-value mineral.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: November 29, 2011
    Assignee: Cytec Technology Corp.
    Inventors: Santhanjheri A. Ravishankar, Josanlet C. Villegas, Bing Wang
  • Patent number: 8066886
    Abstract: A method and apparatus provide pulsed fluid treatment at a plurality of distinct points utilizing pulsed magnetic energy concentrated in a plurality of distinct areas along a fluid flow path. The instant invention prevents the formation and accumulation of contaminants within conduits and on equipment utilized in the transportation, delivery and processing of fluid columns. It may also be utilized to accelerate the separation of oil and water and increase the efficiency of oil/water separation equipment.
    Type: Grant
    Filed: December 26, 2009
    Date of Patent: November 29, 2011
    Inventor: Herbert William Holland
  • Publication number: 20110284231
    Abstract: A method including exposing a substance to a first type of electromagnetic waves generated by a first device. The frequency of the first type of electromagnetic waves is in the radio frequency range and the device preferably consumes no more than about 1,000 Watts of power. The exposure takes place for a period of time and at a frequency sufficient to detectably alter at least one physical property of the substance as it existed prior to the exposure. The substance is selected from the group consisting of a hydrate, a water and oil emulsion, clay, scale, cement, a completion fluid, tank sediment and iron sulfide.
    Type: Application
    Filed: October 2, 2009
    Publication date: November 24, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Harold L. Becker
  • Publication number: 20110278231
    Abstract: The processing method for a mixture according to the present invention is a method for processing a mixture having first particles made of a magnetic material or a nonmagnetic material and second particles made of a magnetic material or a nonmagnetic material wherein the second particles are mixed in a fluid medium containing the first particles, and comprises a dispersion step of dispersing aggregates of the first particles and the second particles present in the mixture, and a magnetic separation step of providing the first particles and second particles with a magnetic force a of different magnitudes by applying a magnetic field to the mixture in parallel with or after the dispersion step, thereby separating the first particles and the second particles from each other.
    Type: Application
    Filed: January 22, 2010
    Publication date: November 17, 2011
    Applicant: OSAKA UNIVERSITY
    Inventor: Shigehiro Nishijima
  • Publication number: 20110272623
    Abstract: The present invention relates to a dispersion at least comprising particles comprising at least one magnetic iron oxide as component A and a solvent mixture as component B comprising (B1) 5% to 95% by weight of at least one water-miscible organic solvent LM as component B1 and (B2) 5% to 95% by weight of water as component B2, the sum of components B1 and B2 making 100% by weight, and to a method for producing a dispersion of this kind, comprising at least the steps (I) mixing particles comprising at least one magnetic iron oxide with at least one water-miscible organic solvent LM and water, (II) homogenizing the mixture from step (I), where a shearing energy of at least 2 kW/m3 is introduced into the mixture in step (II).
    Type: Application
    Filed: May 5, 2011
    Publication date: November 10, 2011
    Applicants: Siemens AG, BASF SE
    Inventors: Imme DOMKE, Wolfgang ROHDE, Daniel Schäfer, Alexej MICHAILOVSKI, Jürgen OSWALD, Reinhold RIEGER, Piyada CHAROENSIRISOMBOON, Florian STRICKER, Alexander WALLON, Jenny REUBER, Jan-Dirk ARNDT
  • Patent number: 8054091
    Abstract: A novel microfluidic device has been developed to measure stability of thin liquid films of water in oil emulsions using electrochemical perturbation of interfaces. This new device can be utilized in rapid classification of de-emulsifiers used in petroleum industries. Although water/crude oil emulsions have been the primary focus of this research, this measurement platform can be used in other industries such as food, cosmetics and bio-engineering (bilayer lipid membranes) as well as environmental remediation of oil spills. The compact design of the device and replacement of the mechanical measurements such as pressure with electrical signal measurements contributes in substantial size reduction of the experimental platform so that it can be employed for onsite measurements in remote areas.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: November 8, 2011
    Assignee: The Governors of the University of Alberta
    Inventors: Subir Bhattacharjee, Farshid Karimi Mostowfi, Jacob Masliyah, Jan Czarnecki, Elizeusz Lucjusz Musial
  • Patent number: 8052875
    Abstract: An apparatus and method for continuous separation of magnetic particles from non-magnetic fluids including particular rods, magnetic fields and flow arrangements.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: November 8, 2011
    Assignee: EXPORTech Company, Inc.
    Inventors: Robin R. Oder, Russell E. Jamison
  • Patent number: 8048313
    Abstract: A method and apparatus of fluid treatment for a plurality of fluids with a first and a second non-magnetically conductive fluid flow conduit sleeved within at least one segment of magnetically conductive conduit providing a plurality of distinct areas of concentrated magnetic energy. The instant invention prevents the formation and accumulation of contaminants within conduits and on equipment utilized in the transportation, delivery and processing of fluid columns. It may also be utilized to accelerate the separation of oil and water and increase the efficiency of oil/water separation equipment.
    Type: Grant
    Filed: June 29, 2008
    Date of Patent: November 1, 2011
    Inventor: Herbert William Holland
  • Publication number: 20110263002
    Abstract: Embodiments herein concern compositions, methods and uses for harvesting suspension cultures or decontaminating waters. In certain embodiments, suspension microorganism cultures can comprise algal cultures. In some embodiments, harvesting suspension cultures may include using a composition capable of interacting with the culture in order to separate the culture from a liquid or media.
    Type: Application
    Filed: March 25, 2011
    Publication date: October 27, 2011
    Inventors: Tianxi ZHANG, Richard CROWELL
  • Patent number: 8043511
    Abstract: A method and apparatus provide fluid treatment at a plurality of distinct points utilizing magnetic energy concentrated in a plurality of distinct areas along a fluid flow path and at least one region of pulsed fluid treatment within a fluid treatment chamber. The instant invention prevents the formation and accumulation of contaminants within conduits and on equipment utilized in the transportation, delivery and processing of fluid columns. It may also be utilized to accelerate the separation of oil and water and increase the efficiency of oil/water separation equipment.
    Type: Grant
    Filed: December 26, 2009
    Date of Patent: October 25, 2011
    Inventor: Herbert William Holland
  • Patent number: 8043510
    Abstract: Methods and apparatus relate to treatment of fluids to remove mercury contaminants in the fluid. Contact of the fluid with active outer surfaces of particles magnetically separable from the fluid loads the particles with the mercury contaminants. Magnetic separation then removes from the fluid the particles loaded with the mercury contaminants such that a treated product remains.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: October 25, 2011
    Assignee: ConocoPhillips Company
    Inventors: Erin Elizabeth Tullos, John Michael Hays, Roland Schmidt, Joe B. Cross
  • Patent number: 8038888
    Abstract: A periphery of a fluid passage (1) extended through a casing (10) is enclosed by a conductive metal layer (5) formed from a non-magnetic material. Four permanent magnets (M1 to M4) are arranged along an outside surface of the inside conductive metal layer (5). The individual permanent magnets (M1 to M4) are closely spaced from each other as defining gaps (G) therebetween. The north poles and the south poles of the magnets are closely spaced from each other at a gap (G) between a first permanent magnet (M1) and a second permanent magnet (M2), and a gap (G) between a third permanent magnet (M3) and a fourth permanent magnet (M4). The permanent magnets (M1 to M4) are totally and solidly enclosed by a magnetic material layer (7).
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: October 18, 2011
    Inventors: Saburo Uemori, Eisuke Yoshioka, Kazuo Shimada
  • Publication number: 20110247984
    Abstract: A magnetic separation device comprising a magnetic base and a retention mechanism, as well as a method of evacuating liquid from a well plate containing liquid and magnetic particles, are disclosed. In specific embodiments, the retention mechanism comprises one or more wire clips. In certain embodiments, the magnetic base comprises apertures configured to receive the wire clips. The retention mechanism can be configured to secure a well plate to the magnetic base so that a user may evacuate liquid from a well plate containing liquid and magnetic particles. In certain embodiments, the method comprises inverting the magnetic separation device and well plate. In particular embodiments, the method comprises rapidly and forcefully inverting magnetic separation device and well plate.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 13, 2011
    Inventors: Tracy Vandenbroek, Mark Coffey, Jarden Krager
  • Patent number: 8034245
    Abstract: The present invention provides a method of driving liquid flow at or near a free surface using self-assembled structures composed of magnetic particles subjected to an external AC magnetic field. A plurality of magnetic particles are supported at or near a free surface of liquid by surface tension or buoyancy force. An AC magnetic field traverses the free surface and dipole-dipole interaction between particles produces in self-assembled snake structures which oscillate at the frequency of the traverse AC magnetic field. The snake structures independently move across the free surface and may merge with other snake structures or break up and coalesce into additional snake structures experiencing independent movement across the liquid surface. During this process, the snake structures produce asymmetric flow vortices across substantially the entirety of the free surface, effectuating liquid flow across the free surface.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: October 11, 2011
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Oleksiy Snezhko, Igor Aronson, Wai-Kwong Kwok, Maxim V. Belkin
  • Publication number: 20110240001
    Abstract: The invention provides a method and apparatus for removing magnetic or magnetized contaminants from a wiresaw cutting slurry during a wiresaw cutting process. The apparatus comprises a recirculating slurry dispensing system that defines the slurry flow pathway. The recirculating dispensing slurry system comprises a magnetic separator for removing magnetic or magnetizable contaminants from the slurry, wherein the purified slurry is discharged back into recirculation within the recirculating slurry dispensing system.
    Type: Application
    Filed: December 21, 2009
    Publication date: October 6, 2011
    Inventors: Steven Grumbine, Ramasubramanyam Nagarajan
  • Patent number: 8029669
    Abstract: Apparatus for treating a fluid in a conduit, comprising first and second core elements of magnetically conductive material adapted to be mounted to the conduit to surround same at spaced positions therealong; and means for establishing radio frequency magnetic fluxes in said core elements, for generating respective electromagnetic fields in the fluid to be treated extending from spaced positions along the conduit.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: October 4, 2011
    Assignee: Hydropath Holdings Limited
    Inventor: Daniel Stefanini
  • Patent number: 8029663
    Abstract: A treatment device is for magnetically treating liquid in a liquid container. A container holder receives the liquid container. At least one permanent magnet is associated with the container holder to generate a magnetic field within the liquid in the liquid container. A treatment timer is associated with the container holder.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: October 4, 2011
    Assignee: Omega Patents, L.L.C.
    Inventor: Kenneth E. Flick
  • Patent number: 8025805
    Abstract: A method of treating an orally ingestible item having an original taste to be enhanced or reduced without imparting bitterness to the item, includes exposing the item to a magnetic field and oxygen.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: September 27, 2011
    Assignee: Inventive Technologies, Inc.
    Inventor: Patrick L. Farrell
  • Publication number: 20110220580
    Abstract: A device for separating ferromagnetic particles from a suspension has a reactor (2) through which the suspension can flow, with at least one magnet (3, 4) arranged on the outside of the reactor (2), wherein the reactor (2) has an interior space (7) and an exterior space (8) surrounding the former, wherein the interior space (7) and exterior space (8) are separated from one another by an insert (6), and the insert (6) has at least one opening (9, 10) near the at least one magnet (3, 4).
    Type: Application
    Filed: September 25, 2009
    Publication date: September 15, 2011
    Inventors: Vladimir Danov, Bernd Gromoll
  • Patent number: 8012357
    Abstract: This invention relates to a continuous or batch centrifugation solid-liquid separation process comprising simultaneously subjecting the solid-liquid mixture to localized magnetic field gradients and the centrifugation and to improved centrifugation solid-liquid separation processes wherein the improvement comprises simultaneously subjecting the solid-liquid mixture to a homogeneous magnetic field, a magnetic field gradient or both prior to and/or during the centrifugation.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: September 6, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Benjamin C. Fuchs, Christian Hoffmann, Karsten Keller, Christopher M. Rey
  • Publication number: 20110203997
    Abstract: A magnetic separation plate for use in methods employing magnetic particles, said magnetic separation plate comprising a support plate and magnetic pins in a predetermined geometrical arrangement, said magnetic pins having a fastening portion, an intermediate portion and a separation portion and being fastened to said support plate at their fastening portion, wherein said magnetic pins are individually displaceable at their separation portion. The invention further provides a method for the separation of magnetic particles using the separation plate.
    Type: Application
    Filed: February 19, 2010
    Publication date: August 25, 2011
    Applicant: ROCHE MOLECULAR SYSTEMS, INC.
    Inventor: Thomas Meyer
  • Patent number: 8002976
    Abstract: A magnetic separation filtering and cleaning apparatus for adding flocculant and magnetic powder to raw water containing pollutant particles to form magnetic floc in treated fluid and separating and removing the magnetic floc from the treated fluid, comprising: a magnetic field generation device being provided in a rotating body for suctioning the magnetic floc on a surface of the rotating body from the treated fluid containing the magnetic floc, a magnetic field rotating device for rotating the magnetic field generation device, a sludge recovery device for separating sludge including the magnetic floc mechanically from the surface of the rotating body of the magnetic field generation device; and a filtering device having a rotating net for filtering out the magnetic floc from the treated fluid including the magnetic floc and flowing down the treated fluid filtered through the rotating net.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: August 23, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Norihide Saho, Hisashi Isogami, Akira Mochizuki, Tomoko Akiyama
  • Publication number: 20110198294
    Abstract: A system for concentrating magnetic particles suspended in a fluid comprising a vessel for containing said fluid having an inner base surface that slopes downwards towards a collection region, the collection region including a retrieval well for collecting magnetic particles; a magnet assembly for positioning under and in proximity with the vessel for attracting magnetic particles to the bottom surface of the vessel, said magnet assembly providing a relatively larger magnetic flux density at a peripheral region thereof; means for laterally traversing the magnet assembly relative to the vessel between a first position whereby the magnet is generally centered under the vessel and a second position whereby the peripheral portion of the magnet is positioned under the well of the vessel; and agitation means for agitating said vessel to facilitate movement of the magnetic particles to the well, where the concentrated particles can be easily removed.
    Type: Application
    Filed: December 15, 2010
    Publication date: August 18, 2011
    Inventor: Anthony N. Sharpe
  • Publication number: 20110198293
    Abstract: The disclosure relates to a magnetic separating device for isolating magnetically labelled particles from a non-magnetic medium comprising a body portion (1) having a magnetising portion (3) for providing a magnetic field and a surface by means of which the body portion may stand on a supporting surface; and a sample vessel retaining portion (4) for retaining at least one sample vessel (5), wherein, the magnetising portion (3) is configured to conform at least approximately to at least a substantial portion of the longitudinal profile of at least one sample vessel (5); the sample vessel retaining portion (4) is configured to retain at least one sample vessel (5) such that at least a portion of the contents of the sample vessel (5) is visible to a user; and the sample vessel retaining portion (4) is configured to be mountable on the magnetising portion so that in use, the at least one sample vessel is subject to the magnetic field of the magnetising portion (3).
    Type: Application
    Filed: May 29, 2008
    Publication date: August 18, 2011
    Applicant: INVITROGEN DYNAL AS
    Inventors: Darren Ellis, Tine Borgen Hildisch, Jeremy Mundy, Erlend Ragnhildstveit, Richard Johan Toften, Kornelija Zgonc, Gaute Brede, Lars Nokleby
  • Patent number: 7998350
    Abstract: A magnetic treatment device for liquid within at least one liquid container may include a figurine having a body portion and at least one limb extending outwardly therefrom. The at least one limb may be positioned adjacent the at least one liquid container. At least one permanent magnet may be carried by the at least one limb to expose the liquid within the at least one liquid container to a magnetic field.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: August 16, 2011
    Assignee: Omega Patents, L.L.C.
    Inventor: Kenneth E. Flick