Synthetic Resin Patents (Class 252/62.54)
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Patent number: 8506837Abstract: A field-responsive fluid which enters a semi-solid state in the presence of an energy field is improved by use of a plurality of energy field responsive particles which form chains in response to the energy field. The particles can be (a) composite particles in which at least one field-responsive member having a first density is attached to at least one member having a second density that is lower than the first density, (b) shaped particles in which at least one field-responsive member has one or more inclusions, and (c) combinations thereof. The particles improve the field-responsive fluid by reducing density without eliminating field-responsive properties which afford utility. Further, a multi-phase base fluid including a mixture of two or more substances, at least two of which are immiscible, may be used.Type: GrantFiled: April 30, 2008Date of Patent: August 13, 2013Assignee: Schlumberger Technology CorporationInventors: Murat Ocalan, Huilin Tu, Nathan Wicks, Agathe Robisson, Dominique Guillot
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Patent number: 8496725Abstract: The invention relates to a composition for producing magnetic or magnetizable moldings, comprising from 95.5 to 98.95% by weight of a powder made of a magnetic or magnetizable material, from 1.0 to 4% by weight of a mixture made of at least one epoxy-novolak resin, and also of at least one hardener, and comprising from 0.05 to 0.5% by weight of at least one additive, based in each case on the total weight of the composition. The mixture made of the at least one epoxy-novolak resin and of the at least one hardener comprises from 85 to 95% by weight of the epoxy-novolak resin and from 5 to 15% by weight of hardener. The hardener has been selected from (cyclo)aliphatic amines and their adducts, polyamides, Mannich bases, amidoamines, phenolic resins, imidazoles, and imidazole derivatives, dicyandiamide, and BF3-monoethanolamine. The invention further relates to a process for producing the composition, and also to a process for producing a molding made of the composition.Type: GrantFiled: March 23, 2011Date of Patent: July 30, 2013Assignee: BASF SEInventors: Carsten Blettner, Jürgen Kaczun, Ria Kress, Dag Wiebelhaus
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Publication number: 20130181802Abstract: Provided are a soft magnetic powder for obtaining a dust core having a low iron loss, the dust core, and a method for producing a dust core. The present invention relates to a soft magnetic powder including a plurality of soft magnetic particles, each having an insulating layer. The Vickers hardness HV0.1 of a material constituting the soft magnetic particles is 300 or more, and the insulating layer contains Si, O, and at least one of an alkali metal and Mg. As long as the soft magnetic powder has such features, a material having a high electric resistance, such as an iron-based alloy, can be used. The eddy current loss can be reduced, and it is possible to effectively obtain a dust core having a low iron loss.Type: ApplicationFiled: October 25, 2011Publication date: July 18, 2013Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Asako Watanabe, Toru Maeda, Tomoyuki Ueno, Tomoyuki Ishimine
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Publication number: 20130168598Abstract: A method for making a carbon nanotube composite film is provided. A PVDF is dissolved into a first solvent to form a PVDF solution. A number of magnetic particles is dispersed into the PVDF solution to form a suspension. A carbon nanotube film is immersed into the suspension and then transferred into a second solvent. The carbon nanotube film structure is transferred from the second solvent and dried to form the carbon nanotube composite film.Type: ApplicationFiled: August 7, 2012Publication date: July 4, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: WEI XIONG, JIA-PING WANG, KAI-LI JIANG, SHOU-SHAN FAN
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Publication number: 20130169488Abstract: A new magnetic substance having a high magnetic permeability and a low magnetic permeability loss over a wide frequency bandwidth, a composite material for antennas using the new magnetic substance and a polymer, and an antenna using the composite material for antennas.Type: ApplicationFiled: September 6, 2012Publication date: July 4, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun-sig KUM, Nak-hyun KIM, Hyun-jin KIM, Seung-kee YANG, Joong-hee LEE
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Patent number: 8475922Abstract: According to one embodiment, there is provided a nanoparticle composite material, including nanoparticle aggregates in a shape having an average height of 20 nm or more and 2 ?m or less and having an average aspect ratio of 5 or more, the nanoparticle aggregates including metal nanoparticles having an average diameter of 1 nm or more and 20 nm or less and containing at least one magnetic metals selected from the group consisting of Fe, Co and Ni and binder existing between the nanoparticle aggregates.Type: GrantFiled: September 23, 2010Date of Patent: July 2, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Tomohiro Suetsuna, Seiichi Suenaga, Tomoko Eguchi, Koichi Harada, Maki Yonetsu, Yasuyuki Hotta, Toshihide Takahashi
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Patent number: 8470194Abstract: A Ni—Zn—Cu ferrite material having excellent DC bias characteristics is provided by adding zinc silicate thereto. The above problem can be solved by Ni—Zn—Cu ferrite particles which comprise a spinel-type ferrite and zinc silicate, which have a composition comprising 36.0 to 48.5 mol % of Fe2O3, 7.0 to 38 mol % of NiO, 4.5 to 40 mol % of ZnO, 5.0 to 17 mol % of CuO and 1.0 to 8.0 mol % of SiO2, all amounts being calculated in terms of the respective oxides, and which have a ratio of an X-ray diffraction intensity from a 113 plane of the zinc silicate to an X-ray diffraction intensity from a 311 plane of the spinel-type ferrite is 0.01 to 0.12; a green sheet obtained by forming a material comprising the Ni—Zn—Cu ferrite particles into a film; and a Ni—Zn—Cu ferrite sintered ceramics.Type: GrantFiled: April 22, 2008Date of Patent: June 25, 2013Assignee: Toda Kogyo CorporationInventors: Yoji Okano, Tomohiro Dote, Norio Sugita
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Publication number: 20130153815Abstract: The present invention relates to a polymer functionalized with a dye, a nanoparticle comprising the dye-functionalized polymer on its surface, as well as to methods of preparing the same. In particular, it relates to a bimodal imaging agent, comprising said nanoparticles functionalized with a polymer bearing a dye with luminescence properties, and fabrication methods of the same.Type: ApplicationFiled: November 23, 2012Publication date: June 20, 2013Applicant: Agency for Science, Technology and ResearchInventor: Agency for Science, Technology and Research
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Patent number: 8465663Abstract: A composition for electromagnetic wave suppression and heat radiation includes: a matrix composed of a high molecular material or a low molecular material; and a magnetic particle filled in the matrix upon mixing a magnetic powder having a relation of {(tap density)/density}?0.58 with the matrix.Type: GrantFiled: January 29, 2010Date of Patent: June 18, 2013Assignee: Sony CorporationInventors: Yoshihiro Kato, Kazuhiko Suzuki, Tatsuo Kumura, Yusuke Kubo
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Publication number: 20130149772Abstract: Magnetic ion-exchange polymer microspheres and a method for preparing the same are provided. The method for preparing the magnetic ion-exchange polymer microspheres includes swelling the ion-exchange resins and allowing the magnetic nano-particles to enter the interior of the ion-exchange resins. The magnetic ion-exchange resins of the present invention have various functional groups can be introduced onto the surfaces thereof. Therefore, the magnetic ion-exchange resins of the present invention can be applied in many areas, and thereby they have high economic value.Type: ApplicationFiled: May 29, 2012Publication date: June 13, 2013Applicant: NATIONAL CHUNG CHENG UNIVERSITYInventors: Wen-Chien Lee, Yu-Zong Lin, Yu-Sheng Lin, Tzu-Hsien Wang
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Publication number: 20130146801Abstract: In one embodiment of the disclosure, a composite material with conductive and ferromagnetic properties is provided. The composite material includes: 5 to 90 parts by weight of a conductive polymer matrix; and 0.1 to 40 parts by weight of iron oxide nanorods, wherein the iron oxide nanorods are ferromagnetic and have a length-to-diameter ratio of larger than 3. In another embodiment, a hybrid slurry is provided. The hybrid slurry includes a conductive polymer, and iron oxide nanorods, wherein the iron oxide nanorods are ferromagnetic and have a length-to-diameter ratio of larger than 3; and a solvent.Type: ApplicationFiled: May 24, 2012Publication date: June 13, 2013Inventors: Ying-Ting HUANG, Mu-Jen Young, Jinn-Jong Wong, Guang-Way Jang
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Publication number: 20130130026Abstract: The invention relates to a polymer composite having magnetic properties that are enhanced or increased in the composite. Such properties include color, thermal conductivity, electrical conductivity, density, improved malleability and ductility viscoelastic and thermoplastic or injection molding properties.Type: ApplicationFiled: January 21, 2013Publication date: May 23, 2013Applicant: TUNDRA COMPOSITES, LLCInventor: Tundra Composites, LLC
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Patent number: 8444872Abstract: Disclosed is a magnetic material having high Hc and High Curie point, which is capable of controlling such magnetic characteristics without requiring rare or expensive raw materials. Specifically disclosed is a magnetic material composed of particles of a magnetic iron oxide which is represented by the following general formula: ?-AxByFe2?x?yO3 or ?-AxByCzFe2?x?y?zO3 (wherein A, B and C each represents a metal excluding Fe and different from each other, satisfying 0<x, y, z<1), with ?-Fe2O3 as a main phase.Type: GrantFiled: May 30, 2008Date of Patent: May 21, 2013Assignees: The University of Tokyo, Dowa Electronics Materials Co., Ltd.Inventors: Shin-ichi Ohkoshi, Shunsuke Sakurai, Takenori Yorinaga, Kazuyuki Matsumoto, Shinya Sasaki
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Publication number: 20130119419Abstract: Magnetically adjusting color-converting particles within a matrix and associated devices, systems, and methods are disclosed herein. A magnetic-adjustment process can include applying a magnetic field to a mixture including a non-solid matrix and a plurality of color-converting particles (e.g. magnetically anisotropic color-converting particles). The magnetic field can cause the plurality of color-converting particles to move into a generally non-random alignment (e.g., a generally non-random magnetic alignment and/or a generally non-random shape alignment) within the non-solid matrix. The non-solid matrix then can be solidified to form a solid matrix. A magnetic-adjustment process can be performed in conjunction with testing and/or product binning of solid-state radiation transducer devices.Type: ApplicationFiled: November 11, 2011Publication date: May 16, 2013Applicant: MICRON TECHNOLOGY, INC.Inventors: Sameer S. Vadhavkar, Tim J. Corbett, Xiao Li
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Publication number: 20130112911Abstract: A nanoparticle composition comprises a ferromagnetic or superparamagnetic metal nanoparticle, and a functionalized carbonaceous coating on a surface of the ferromagnetic or superparamagnetic metal nanoparticle. A magnetorheological fluid comprises the nanoparticle composition.Type: ApplicationFiled: November 3, 2011Publication date: May 9, 2013Applicant: BAKER HUGHES INCORPORATEDInventors: Oleg A. Mazyar, Soma Chakraborty, Terry R. Bussear, Michael H. Johnson
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Publication number: 20130099151Abstract: A coated magnetic particle comprising an optionally porous magnetic polymer particle of a matrix polymer, said polymer particle having on a surface and/or in the pores thereof superparamagnetic crystals, said coated particle having a coat formed of a coating polymer, wherein said coated magnetic particle is essentially non-autofluorescent.Type: ApplicationFiled: October 12, 2012Publication date: April 25, 2013Applicant: LIFE TECHNOLOGIES CORPORATIONInventor: LIFE TECHNOLOGIES CORPORATION
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Publication number: 20130087736Abstract: The invention provides a method of preparing an aqueous dispersion of polymer encapsulated particulate material, the method comprising: providing a dispersion of the particulate material in a continuous aqueous phase, the dispersion comprising RAFT agent as a stabiliser for the particulate material; and polymerising ethylenically unsaturated monomer under the control of the RAFT agent to form polymer at the surface of the dispersed particulate material, thereby providing the aqueous dispersion of polymer encapsulated particulate material; wherein polymerisation of the ethylenically unsaturated monomer comprises: (a) polymerising a monomer composition that includes ionisable ethylenically unsaturated monomer so as to form a base responsive water swellable RAFT polymer layer that encapsulates the particulate material; and (b) polymerising a monomer composition that includes non-ionisable ethylenically unsaturated monomer so as to form an extensible, water and base permeable RAFT polymer layer that encapsulType: ApplicationFiled: December 1, 2010Publication date: April 11, 2013Applicant: THE UNIVERSITY OF SYDNEYInventors: Matthew P. Baker, Timothy W. Davey, Brian S. Hawkett, Duc N. Nguyen, Caitlin C. O'Brien, Christopher H. Such
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Patent number: 8409463Abstract: The invention discloses an aqueous method of making polymer coated superparamagnetic nanoparticles. The method comprises providing a mixture of iron salts in an aqueous solution of hydrochloric acid. A solution of ammonium hydroxide is added to the mixture and stirred. Stirring continues with an aqueous solution of one or more biocompatible polymers so as to promote formation of polymer coated iron nanoparticles in suspension, wherein optionally at least one of the polymers in the coating may be aminated. Centrifuging the suspension leaves a supernatant without large particles. Filtering the supernatant through an ultrafiltration membrane and collecting the filtrate recovers polymer coated nanoparticles. Crosslinking the polymer is effected by treatment with a solution of epichlorohydrin and sodium hydroxide while stirring vigorously for up to about eight hours. Optionally aminating the polymer may be accomplished by treatment with ammonia after crosslinking and then removing remaining free epichlorohydrin.Type: GrantFiled: July 16, 2008Date of Patent: April 2, 2013Assignee: University of Central Florida Research Foundation, Inc.Inventors: Jesus Manuel Perez, Sudip Nath
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Patent number: 8404141Abstract: A rare earth bonded magnet is provided which is produced such that a mixture which comprises: a rare earth magnet powder; a resin binder comprising a thermosetting resin; an organic phosphorus compound; and a coupling agent is compress-molded, heated and cured, wherein the organic phosphorus compound and the coupling agent are represented by the following respective chemical formulas (structural formulas):Type: GrantFiled: March 18, 2010Date of Patent: March 26, 2013Assignee: Minebea Co., Ltd.Inventors: Noboru Menjo, Kinji Uchiyama, Yuki Takeda
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Publication number: 20130062286Abstract: The present invention relates to a method for obtaining materials based on treating solids by interaction with ferrofluids to give the final product a superparamagnetic behaviour at a moderate temperature. Said superparamagnetic materials are the result of the assembly of metal oxide nanoparticles associated to a compound with a surfactant effect, such as oleic acid, which are provided by a non-aqueous ferrofluid to different types of solids, preferably having adsorbent, absorbent or reactant and product support properties. The invention also relates to the material obtained by this procedure and its use in various applications such as adsorbents, sensors, ion exchangers the removal of toxic or radioactive contaminants, in chromatographic separation processes, in medical and biological applications, as carriers of biologically derived materials such as enzymes, as polymer fillers, absorption of electromagnetic radiation, as well as metal oxide and catalyst precursors.Type: ApplicationFiled: March 7, 2011Publication date: March 14, 2013Applicant: CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS (CSIC)Inventors: Eduardo Ruiz Hitzky, María Pilar Aranda Gallego, Yorexis González Alfaro
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Publication number: 20130056672Abstract: A part is manufactured by introducing magnetic particles into a matrix material, and orienting the particles by coupling them with an electromagnetic field. The matrix material is solidified in patterned layers while the particles remain oriented by the field.Type: ApplicationFiled: September 1, 2011Publication date: March 7, 2013Applicant: THE BOEING COMPANYInventors: Scott Robert Johnston, Jonathan Blake Vance, James William Fonda, Brett Ian Lyons
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Publication number: 20130058870Abstract: The invention relates to nanocrystals, containing one or more metals as defined in the specification; having a size of 2 to 200 nm; having a defined, three-dimensional polyhedral structure, optionally functionalized by ligands and/or embedded crystals. The invention further relates to monodisperse assemblies of such nanocrystals, to formulations and devices comprising such nanocrystals as well as to the manufacture and use thereof.Type: ApplicationFiled: May 11, 2011Publication date: March 7, 2013Applicant: ETH ZURICHInventors: Christophe Jan Lacroix, Christophe Chassard, Marcus Yaffee
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Publication number: 20130056673Abstract: Disclosed is an electromagnetic wave-absorbing composite. To make the electromagnetic wave-absorbing composite, barium ferrite (BaFe12O19) and barium titanate (BaTiO3) are added into aniline during polymerization of the aniline. Thus, a core-shell structure is formed. The core-shell structure includes a magnetic/dielectric core and a conductive shell for covering the magnetic/dielectric core.Type: ApplicationFiled: September 6, 2011Publication date: March 7, 2013Applicant: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National DefenseInventors: Cheng-Chien Yang, Kuo-Hui Wu
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Publication number: 20130043423Abstract: The present disclosure relates to coating formulations for neodymium-iron-boron type magnetic powders manufactured from rapid solidification processes for the purpose, inter alia, of corrosion and oxidation resistance when exposed to aggressive environments. The coating formulation preferably contains an epoxy binder, curing agent, an accelerating agent, and a lubricant. By incorporating coupling agents and optionally, other specialty additives with the magnetic powder and the organic epoxy components, additional oxidation and corrosion prevention, enhanced adhesion and dispersion between the filler and matrix phases can be achieved. This disclosure relates to all such rare earth-transition metal-boron (RE-TM-B) powders produced by rapid solidification and encompasses both the bonded magnet products that include combinations of the materials mentioned and the application processes.Type: ApplicationFiled: October 18, 2012Publication date: February 21, 2013Applicant: MAGNEQUENCH, INC.Inventor: MAGNEQUENCH, INC.
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Patent number: 8354037Abstract: To provide a high-frequency magnetic material having a superior radio wave absorption property in a high frequency region and a method of manufacturing the same. The high-frequency magnetic material and the method of manufacturing the same includes a magnetic substance containing metal nanoparticles, the metal nanoparticles are magnetic metals containing at least one kind of Fe, Co, and Ni, an average particle diameter of the metal nanoparticles is equal to or less than 200 nm, first clusters having network-like structures with continuous metal nanoparticles and the average diameter equal to or less than 10 ?m are formed, second clusters having network-like structures with the continuous first clusters and the average diameter equal to or less than 100 ?m are formed, and the entire magnetic substance has a network-like structure with the continuous second clusters.Type: GrantFiled: March 18, 2009Date of Patent: January 15, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Kouichi Harada, Tomohiro Suetsuna, Seiichi Suenaga
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Publication number: 20120319030Abstract: Disclosed is a multifunctional colloidal nanocomposite derived from nucleophilic substitution-induced layer-by-layer assembly in organic media. The multifunctional colloidal nanocomposite includes: silica colloids coated with aminopropyltrimethoxysilane; and a plurality of nanoparticle layers highly densely adsorbed onto the coated silica colloids. The multifunctional colloidal nanocomposite has a highly dense multilayer structure in which 2-bromo-2-methylpropionic acid (BMPA)-stabilized quantum dot nanoparticles and an amine-functionalized polymer are adsorbed onto silica colloids using a nucleophilic substitution reaction-based layer-by-layer assembly method. Due to this structure, the multifunctional colloidal nanocomposite can be dispersed in various organic solvents, including polar and nonpolar organic solvents.Type: ApplicationFiled: June 19, 2012Publication date: December 20, 2012Inventor: Jin Han CHO
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Patent number: 8329056Abstract: Anisotropic rare earth-iron based resin bonded magnet comprises: [1] a continuous phase including: (1) a spherical Sm2Fe17N3 based magnetic material covered with epoxy oligomer where its average particle size is 1 to 10 ?m, its average aspect ratio ARave is 0.8 or more, and mechanical milling is not applied after Sm—Fe alloy is nitrided; (2) a linear polymer with active hydrogen group reacting to the oligomer; and (3) additive; and [2] a discontinuous phase being an Nd2Fe14B based magnetic material coated with the epoxy oligomer where its average particle size is 50 to 150 ?m, and its average aspect ratio ARave is 0.65 or more, further satisfying: [3] the air-gap ratio of a granular compound on the phases is 5% or less; and [4] a composition where crosslinking agent with 10 ?m or less is adhered on the granular compound is formed at 50 MPa or less.Type: GrantFiled: August 10, 2010Date of Patent: December 11, 2012Assignee: Minebea Co., Ltd.Inventors: Fumitoshi Yamashita, Osamu Yamada, Shiho Ohya
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Publication number: 20120305491Abstract: The present disclosure relates to magnetic nanocomposite materials, and processes for the production thereof. In particular, the present disclosure relates to nanocomposites comprising magnetic nanoparticles surrounded by a polymer, which is bonded to a biodegradable polymer.Type: ApplicationFiled: May 31, 2012Publication date: December 6, 2012Inventor: Khashayar Ghandi
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Publication number: 20120292554Abstract: Provided is an electromagnetic wave absorbent material comprising a magnetic film as the main constituent thereof. The magnetic film comprises a titania nanosheet where a 3d magnetic metal element is substituted at the titanium lattice position. The electromagnetic wave absorbent material stably and continuously exhibits electromagnetic wave absorption performance in a range of from 1 to 15 GHz band and is useful as mobile telephones, wireless LANs and other mobile electronic instruments. The absorbent material can be fused with a transparent medium and is applicable to transparent electronic devices such as large-sized liquid crystal TVs, electronic papers, etc.Type: ApplicationFiled: July 27, 2012Publication date: November 22, 2012Inventors: Minoru OSADA, Takayoshi Sasaki
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Patent number: 8313666Abstract: There is provided novel curable ink compositions comprising polymer-coated magnetic metal nanoparticles. In particular, there is provided ultraviolet (UV) curable gel inks comprising at least the coated magnetic metal nanoparticles, one curable monomer, a radiation activated initiator that initiates polymerization of curable components of the ink, a gellant. The inks may also include optional colorants and one or more optional additives. These curable gel UV ink compositions can be used for ink jet printing in a variety of applications.Type: GrantFiled: March 17, 2011Date of Patent: November 20, 2012Assignee: Xerox CorporationInventors: Gabriel Iftime, Naveen Chopra, Barkev Keoshkerian, Peter G. Odell, Marcel P. Breton
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Publication number: 20120286191Abstract: The present invention provides a powder for a magnetic member being excellent in moldability and difficult to oxidize, a powder compact produced from the powder, and a magnetic member suitable for a raw material of a magnetic member such as a rare earth magnet. A powder for a magnetic member includes magnetic particles 1 which constitute the powder for a magnetic member and each of which is composed of less than 40% by volume of a hydrogen compound 3 of a rare earth element, and the balance composed of an iron-containing material 2 which contains iron and an iron-boron alloy containing iron and boron. The hydrogen compound 3 of a rare earth element is dispersed in a phase of the iron-containing material 2. An antioxidant layer 4 having a low-oxygen permeability coefficient is provided on the surface of each of the magnetic particles 1.Type: ApplicationFiled: May 10, 2011Publication date: November 15, 2012Applicant: Sumitomo Electric Industries,Ltd.Inventors: Toru Maeda, Asako Watanabe
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Patent number: 8303837Abstract: A rotating machine comprising a sintered ferrite magnet having an M-type ferrite structure, comprising Ca, an R element that is at least one of rare earth elements and indispensably includes La, Ba, Fe and Co as indispensable elements, and having a composition represented by the formula: Ca1-x-yRxBayFe2n-zCoz, wherein (1?x?y), x, y, z and n represent the contents of Ca, the R element, Ba and Co, and a molar ratio, meeting 0.3?1?x?y?0.65, 0.2?x?0.65, 0.001?y?0.2, 0.03?z?0.65, 4?n?7, and 1?x?y>y; a bonded magnet comprising ferrite powder having the above composition and a binder, and a magnet roll, at least one magnetic pole portion of which is made of the above bonded magnet.Type: GrantFiled: February 13, 2007Date of Patent: November 6, 2012Assignee: Hitachi Metals, Ltd.Inventors: Takashi Takami, Hiroshi Iwasaki, Yoshinori Kobayashi, Naoki Mochi, Ryuji Gotoh
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Patent number: 8303838Abstract: There is provided novel curable ink compositions comprising inorganic oxide-coated magnetic metal nanoparticles. In particular, there is provided ultraviolet (UV) curable gel inks comprising at least the inorganic oxide-coated magnetic metal nanoparticles, one curable monomer, a radiation activated initiator that initiates polymerization of curable components of the ink. In particular the ink may include a gellant. The inks may also include optional colorants and one or more optional additives. These curable UV ink compositions can be used for ink jet printing in a variety of applications.Type: GrantFiled: March 17, 2011Date of Patent: November 6, 2012Assignee: Xerox CorporationInventors: Gabriel Iftime, Naveen Chopra, Barkev Keoshkerian, Peter G. Odell, Marcel P. Breton
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Publication number: 20120270043Abstract: An adhesive composition for slide rail exhibits excellent workability in attaching a slide rail to a vehicle body and has a strong adhesive force after heating, the magnetic force of which can be lowered, which sustains the strong adhesive force after heating and then returning to room temperature so as to allow the firm fixation of the slide rail to the vehicle body, and which can lower the volume of the noise caused by opening/closing of a door. Specifically disclosed is an adhesive composition for slide rail which includes a hot-melt adhesive and a ferromagnetic substance, wherein the composition shows a density at 20° C. of 1.4-4.5 g/cm3 and has such magnetic properties that the magnetic force of an adhesive sheet, that is obtained by molding the composition, at a position 1 cm apart from the surface of the adhesive sheet is 10 mT or more.Type: ApplicationFiled: September 3, 2010Publication date: October 25, 2012Applicant: LINTEC CORPORATIONInventors: Yoshitomo Ono, Tadahiro Tominou, Yumiko Amino, Shigeyuki Yaguchi
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POLYMER COATED FERRITE FINE PARTICLES AND METHOD FOR PREPARING POLYMER COATED FERRITE FINE PARTICLES
Publication number: 20120269737Abstract: [Object] To provide a polymer coated ferrite fine particles being possible to control a particle size uniformly while having high aqueous dispersibility and preferred biomolecule immobilization ability and an easy method for preparing the same. [Means Addressing Object] In an aqueous solvent, iron ion is protected by chelating polyacrylic acid and then alkaline is added. Thereafter, a reaction system is heated under pressurized condition to produce simultaneous precipitation of the ferrite fine particles and coating thereof. As the result, the polymer coated ferrite fine particles having uniform particle size may be prepared in one step with excellent reproducibility. The polymer coated ferrite fine particles of the present invention has high water dispersibility and has preferred biomolecule immobilization performance by carboxyl groups coming from the polyacrylic acid.Type: ApplicationFiled: October 28, 2010Publication date: October 25, 2012Applicant: TOKYO INSTITUTE OF TECHNOLOGYInventors: Hiroshi Handa, Mamoru Hatakeyama, Satoshi Sakamoto, Hiroshi Kishi -
Patent number: 8288458Abstract: An aggregate of functional particles includes a plurality of functional particles and an insulating material for covering the plurality of functional particles, and a large number of aggregates of functional particles are filled in a resin. Alternatively, insulating functional particles are added to the plurality of functional particles by an amount less than 50% of that of the functional particles in volume ratio.Type: GrantFiled: March 28, 2005Date of Patent: October 16, 2012Assignee: Nippon Kagaku Yakin Co., Ltd.Inventors: Kiyotaka Matsukawa, Kozo Ishihara, Kazuhiro Masano, Toshikazu Tanaka
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Patent number: 8282852Abstract: A magnetorheological (MR) fluid is described herein. The MR fluid includes a plurality of magnetizable particles having a particle density. The fluid also includes a carrier fluid having a fluid density, and the plurality of magnetizable particles is dispersed within the carrier fluid. A portion of the plurality of magnetizable particles has a particle density that is substantially the same as the fluid density. The MR fluid may include a plurality of magnetizable particles having an outer shell of a magnetizable material and a hollow core. The MR fluid may also include a plurality of magnetizable particles having an outer shell of a magnetizable material and a solid core. The MR fluid may include a plurality of magnetizable particles having a matrix and a plurality of sub-particles embedded therein. The core or matrix of these particles may include a ceramic, glass or polymer, or a combination thereof.Type: GrantFiled: September 16, 2009Date of Patent: October 9, 2012Assignee: GM Global Technology Operations LLCInventor: Prabhakar Marur
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Patent number: 8282851Abstract: The invention relates to a cellular elastomer which is anisotropic, with anisotropy being defined by the compressive modulus in one of three orthogonal directions being greater than that in the other two directions by a factor of at least 1.5. The invention also relates to a cellular elastomer containing magnetizable particles which have a chain-like alignment along one spatial direction. The invention also relates to a process for producing a cellular elastomer containing magnetiable particles and the use of such elastomers in articles of manufacture.Type: GrantFiled: December 11, 2007Date of Patent: October 9, 2012Assignee: BASF SEInventors: Joern Duwenhorst, Maximilian Ruellmann, Frank Prissok, Sven Lasai, Steffen Mayer, Michael Harms, Claus Gabriel
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Publication number: 20120249375Abstract: A material contains a curable liquid polymer containing suspended nanoparticles capable of exhibiting a magnetic property. The nanoparticles are present in a concentration sufficient to cause the curable liquid polymer to flow in response to application of a magnetic field, enabling the material to be guided into narrow regions to completely fill such regions prior to the polymer being cured. A method includes applying a filler material to at least one component, the filler material including a heat curable polymer containing nanoparticles, and applying an electromagnetic field to at least part of the filler material. The nanoparticles contain a core capable of experiencing localized heating sufficient to at least partially cure surrounding polymer. Also disclosed is an assembly for use at radio frequencies. The assembly includes a substrate and at least one component supported by the substrate.Type: ApplicationFiled: May 23, 2008Publication date: October 4, 2012Inventors: Markku T. Heino, Reijo K. Lehtiniemi, Markku A. Oksanen, Eira T. Seppala, Pekka Martti Tapio Ikonen, Robin H.A. Ras, Jaakko Timonen, Maija Pohjakallio, Christoffer Johans
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Patent number: 8277679Abstract: The object of the present invention is to provide a composite magnetic material having well-balanced magnetic properties and chemical properties, and a magnetic element using thereof. Concretely, the present provides the composite magnetic material comprising a binder and a magnetic powder contains followings: Mn not less than 0.25 wt % and not larger than 3 wt %, Si not less than 1 wt % and not larger than 7 wt %, Cr not less than 2 wt % and not larger than 8 wt %, and the rest of Fe and inevitable impurities with respect to the total weight of a magnetic powder material, and a ratio of powder particles having the major/minor axis is not less than 2 is not larger than 5% of the total powder particles.Type: GrantFiled: February 10, 2011Date of Patent: October 2, 2012Assignee: Sumida CorporationInventors: Akihiko Nakamura, Keisuke Watanabe
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Patent number: 8277678Abstract: A magnetic composition for power conversion includes a thermoplastic polymer and magnetic powders. The composition has a tensile strength of greater than 20 N/mm2.Type: GrantFiled: February 28, 2008Date of Patent: October 2, 2012Assignee: The Hong Kong Polytechnic UniversityInventors: Ka Wai Eric Cheng, Yuen Wah Wong, Wei Tai Wu, Kai Ding, Yiu Lun Ho, Tsz Kong Cheung, Chi Keong Cheong
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Publication number: 20120244065Abstract: Disclosed is a magnetic catalyst formed by a single or multiple nano metal shells wrapping a carrier, wherein at least one of the metal shells is iron, cobalt, or nickel. The magnetic catalyst with high catalyst efficiency can be applied in a hydrogen supply device, and the device can be connected to a fuel cell. Because the magnetic catalyst can be recycled by a magnet after generating hydrogen, the practicability of the noble metals such as Ru with high catalyst efficiency is dramatically enhanced.Type: ApplicationFiled: June 5, 2012Publication date: September 27, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chan-Li HSUEH, Cheng-Hong LIU, Jie-Ren KU, Ya-Yi HSU, Cheng-Yen CHEN, Reiko OHARA, Shing-Fen TSAI, Chien-Chang HUNG, Ming-Shan JENG
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Publication number: 20120236092Abstract: A phase change magnetic ink and process for preparing same including comprising a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a polymer coated magnetic nanoparticle comprising a magnetic core and a polymeric shell disposed thereover.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: Xerox CorporationInventors: Gabriel Iftime, Peter G. Odell, Marcel P. Breton
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Publication number: 20120236091Abstract: A phase change magnetic ink including a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a surfactant coated magnetic nanoparticle comprising a magnetic core and a shell disposed thereover.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: Xerox CorporationInventors: Gabriel Iftime, Peter G. Odell, Marcel P. Breton
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Publication number: 20120236065Abstract: Disclosed is a curable magnetic ink comprising (a) an ink carrier which comprises at least one curable monomer, oligomer, or prepolymer; (b) at least one initiator; and (c) carbon-coated magnetic nanoparticles, said ink being curable upon exposure to radiation. Also disclosed is a process for printing with the ink.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: XEROX CORPORATIONInventors: Gabriel Iftime, Naveen Chopra, Barkev Keoshkerian, Peter G. Odell
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Publication number: 20120236088Abstract: A phase change magnetic ink including a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a carbon coated magnetic nanoparticle comprising a magnetic core and a carbon shell disposed thereover.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: Xerox CorporationInventors: Gabriel Iftime, C. Geoffrey Allen, Peter G. Odell, Richard P.N. Veregin, Marcel P. Breton
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Publication number: 20120235076Abstract: There is provided novel curable ink compositions comprising inorganic oxide-coated magnetic metal nanoparticles. In particular, there is provided ultraviolet (UV) curable gel inks comprising at least the inorganic oxide-coated magnetic metal nanoparticles, one curable monomer, a radiation activated initiator that initiates polymerization of curable components of the ink. In particular the ink may include a gellant. The inks may also include optional colorants and one or more optional additives. These curable UV ink compositions can be used for ink jet printing in a variety of applications.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: XEROX CORPORATIONInventors: Gabriel Iftime, Naveen Chopra, Barkev Keoshkerian, Peter G. Odell, Marcel P. Breton
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Publication number: 20120236089Abstract: A phase change magnetic ink and process for preparing same including comprising a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a coated magnetic nanoparticle comprising a magnetic core and a shell disposed thereover.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: Xerox CorporationInventors: Gabriel Iftime, Peter G. Odell, Marcel P. Breton
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Publication number: 20120235074Abstract: Solvent-based ink compositions which can be used for ink jet printing in a variety of applications. In particular, the present embodiments are directed to magnetic inks having desirable ink properties. The ink of the present embodiments comprise magnetic nanoparticles that are coated with various materials to prevent the exposure of the nanoparticles to oxygen, and provides robust prints.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: XEROX CORPORATIONInventors: GABRIEL IFTIME, Peter G. Odell, C. Geoffrey Allen, Marcel P. Breton, Richard P. N. Veregin
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Publication number: 20120234488Abstract: One embodiment includes a magnetic particle-containing adhesive an adhesive including a polymer resin having a softening temperature; and magnetic particles dispersed within the polymer resin.Type: ApplicationFiled: March 18, 2011Publication date: September 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: John C. Ulicny, Paul E. Krajewski, Mark A. Golden, Keith S. Snavely