Patents Examined by Nikolas J Uhlir
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Patent number: 6620497Abstract: A thermally conductive and electrically insulative polymer composition and a method for creating the same is provided. Thermally conductive filler material is coated with a thermally conductive and electrically insulative coating material and mixed with a base polymer matrix. The mixture is molded into the desired shape. The electrically insulative coating material prevents the transfer of electricity through the filler material thus resulting in an electrically insulative composition.Type: GrantFiled: January 10, 2001Date of Patent: September 16, 2003Assignee: Cool Options, Inc.Inventors: Lyle James Smith, E. Mikhail Sagal, James D. Miller, Kevin McCullough
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Patent number: 6613459Abstract: A master magnetic information carrier has embedded magnetic films that are free from protrusion and recess. The master disk is fabricated by the steps of laminating Co-based soft magnetic film on a resin base plate, forming isolated magnetic films in predetermined region by patterning the magnetic film, pressing a die from above the isolated magnetic films while heating the base plate with the magnetic films thereon, and releasing the die. Since the master disk is a mold product fabricated by pressing the die, the embedded magnetic films and the resin surface portion surrounding the magnetic films are intimately adjoined and protrusions and recesses at the boundary between them are suppressed to a minimum. The surface of the master disk is so smooth and flat that generation of flaws and gouges on the magnetic recording medium and transfer of particles and chemical contaminants to the recording medium in the contact duplication process are reduced.Type: GrantFiled: July 17, 2000Date of Patent: September 2, 2003Assignee: Fuji Electric Co., Ltd.Inventors: Akira Saito, Kazuo Nimura, Akihiro Otsuki
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Patent number: 6592983Abstract: A cut-resistant and shred-resistant absorbent sheet material including an absorbent substrate and cut-resistant particles distributed through the substrate. Preferably, the absorbent substrate comprises cellulosic material and the particles comprise polymeric materials having an average size of at least about 100 micrometers, and most preferably between 100 and 1000 micrometers. It is also preferred that the absorbent substrate is provided in an amount of at least 50 percent by weight and is substantially free of inorganic free filler particulate. In addition, it is preferred that the sheet material has a basis weight of at least 100 pounds per 3000 ft2, and that the particles are provided in an amount of between about 10 percent and about 50 percent by weight of the sheet. The sheet material can be made using typical paper making processes. Preferably, heat and/or pressure are applied to the sheet material to cause the particles to at least partially flow, so as to bond to the absorbent substrate.Type: GrantFiled: April 27, 2000Date of Patent: July 15, 2003Assignee: The Procter & Gamble CompanyInventors: John Kit Carson, Steven Michael Schennum
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Patent number: 6579607Abstract: Controlled permeability films are provided wherein spherical and/or nonporous filler particles having a size greater than the intrinsic thickness of the film are incorporated in a film forming polymer and the film is treated to reduce the carbon dioxide to oxygen permeability ratio of the film. The film can be a multilayer film of polyolefin polymers or copolymers and polyesters. A further embodiment provides a packaging film comprising an outer layer of a styrene-butadiene copolymer to impart clarity, stiffness, crinkle feeling and glossy finish; an internal layer of a barrier film containing inert preferably spherical filler particles larger than the packaging film thickness; and an inner layer of an ethylene alpha-olefin manufactured by the single-site catalyst technology. The nonporous particles are transparent glass so that the multi-layer film has good clarity. The barrier film is an ethylene-vinyl alcohol copolymer and the loading of filler particles is about 0.1%.Type: GrantFiled: June 12, 2000Date of Patent: June 17, 2003Assignee: Dow Global Technologies, Inc.Inventors: Yesim Gozukara, Gregor Bruce Yeo Christie
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Patent number: 6576334Abstract: The present invention aims to provide a bonding material with excellent adhesion, electric connection and insulation properties, which can be used to bond the sides of a pair of members to be connected having a plurality of electrodes without causing short circuit between adjacent electrodes even under the application of high voltage or high current across opposite electrodes on the members to be connected, by bonding members to be connected with the bonding material of the present invention without causing short circuit between adjacent electrodes, even under the application of high voltage across opposite electrodes, because the bonding material of the present invention contains metal ion scavenger particles containing a bismuth-based ion exchanger and a vinyl triazine compound and having an average particle diameter smaller than that of conductive particles.Type: GrantFiled: February 16, 2001Date of Patent: June 10, 2003Assignee: Sony Chemicals Corp.Inventor: Mikio Sakairi
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Patent number: 6572940Abstract: A glass sheet includes a coating comprising at least one silver layer and inner and outer antireflection layers. The glass sheet is formed by a magnetron sputtering process. The inner antireflection layer is a multiple layer comprising a layer of a titanium oxide applied by medium frequency magnetron sputtering and a layer of a metal oxide between the titanium oxide layer and a silver layer.Type: GrantFiled: February 9, 2000Date of Patent: June 3, 2003Assignee: Flachglas AktiengesellschaftInventors: Axel Noethe, Michael Rissmann, Thomas Paul
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Patent number: 6555252Abstract: Disclosed is a modulated grain-composition magnetic recording material with up to terabit areal density recording capacity which, preferably, is produced by sequential vacuum deposition and subsequent annealing procedures that allow selective fabrication of magnetic material with desired grain size and coercivity, and with desired longitudinal or perpendicular magnetic particle “c-axis” orientation. The preferred magnetic recording material has multiple layers of FePt/B2O3 and/or Fe/Pt/B2O3, with minimum grain size of approximately ten (10) nanometers, with perpendicularly oriented “c-axis”, and with coercivity (Hc) of up to twelve (12) K-Oe. The preferred fabrication procedure involves sequential sputter deposition of FePt and B2O3 layers, followed by an anneal step.Type: GrantFiled: March 12, 2001Date of Patent: April 29, 2003Assignee: Board of Regents of the University of NebraskaInventors: David J. Sellmyer, Chunping Luo
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Patent number: 6528156Abstract: An infrared cut-off layer containing an ITO powder is formed on one surface of a base film, to form an infrared cut-off film. The ITO powder has a minimum value of a diffused-reflection-functional logarithm, logf(Rd), at a light wavelength of 470 nm or lower, which logarithm is measured on the basis of the following equation, f(Rd)=(1−Rd)2/2Rd=&agr;/S (Rd: a relative reflectance to a standard sample, &agr;: an absorption coefficient, S: a scattering coefficient, formulated for a diffused reflection light, and the minimum value of −0.1 or less. There is provided an infrared cut-off film having a hue of blue and sufficient transparency.Type: GrantFiled: June 9, 2000Date of Patent: March 4, 2003Assignee: Tomoegawa Paper Co., LtdInventors: Tuyoshi Takizawa, Shinichi Takahashi
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Patent number: 6528149Abstract: The present invention relates to perpendicular magnetic recording media using a ferromagnetic film provided with perpendicular magnetic anisotropy for a recording layer and a magnetic recording apparatus using the media, and the object is to provide the perpendicular magnetic recording media which are excellent in signal to noise ratio (S/N) in a large recording density region, which are stable against thermal fluctuation and which can be easily manufactured, and the magnetic recording apparatus using the media.Type: GrantFiled: March 20, 2001Date of Patent: March 4, 2003Assignee: Hitachi, Ltd.Inventors: Kazuetsu Yoshida, Masaaki Futamoto, Yoshiyuki Hirayama
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Patent number: 6528158Abstract: A metal thin plate and thermoplastic elastomer have largely different coefficients of linear expansion. When the thermoplastic elastomer is injected into a mold, in which the metal thin plate is mounted and arranged in advance, to integrally mold an elastic blade, since shrinkage of the thermoplastic elastomer during cooling solidification is much larger than that of the metal thin plate, the thermoplastic elastomer on the metal thin plate is fixed to the metal thin plate, and distortion during molding remains near the gate. Distortion occurs between the metal thin plate and gate in a direction perpendicular to the long side of the elastic blade. This appears as streaking nonuniformity in the coating on a sleeve produced by partial defective urging. A resin flow changes its flowing direction after it abuts against the long side, on the metal thin plate side, of the elastic blade. A flow mark is consequently formed on the surface of the elastic blade.Type: GrantFiled: July 20, 2000Date of Patent: March 4, 2003Assignee: Canon Kabushiki KaishaInventor: Masaaki Kuroda
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Patent number: 6524695Abstract: A conductive blade includes a blade member formed of an electrically conductive rubber, and an electrically conductive holder. The blade member has one widthwise end portion serving as a free end portion and the other widthwise end portion serving as a bonding end portion. One end of the free end portion is brought into contact with a subject member. The holder is bonded to the bonding end portion of the blade member over the length of the blade member. A conductive layer formed of a conducting filler and an elastomer is provided for connecting the end face of the bonding end portion of the blade member and a portion of the holder which is adjacent to the end face of the bonding end portion.Type: GrantFiled: February 21, 2001Date of Patent: February 25, 2003Assignees: Hokushin Corporation, Toshiba Tec Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Gouki Sasagawa, Tetsuya Nakamura, Masato Ogasawara
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Patent number: 6489018Abstract: A reversibly thermochromic light-transmitting laminate member which has a satisfactory thermochromic function and undergoes alternate color changes between a colorless transparent state and a colored transparent state.Type: GrantFiled: December 3, 2001Date of Patent: December 3, 2002Assignee: The Pilot Ink Co., Ltd.Inventors: Kuniyuki Senga, Jun Sugai, Shigehiro Koide
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Patent number: 6485824Abstract: A reversibly thermochromic light-shielding/light-transmitting laminate member. More particularly, the invention relates to a reversibly thermochromic light-shielding/light-transmitting laminate member which changes not only in color but in transmittance with temperature.Type: GrantFiled: December 3, 2001Date of Patent: November 26, 2002Assignee: The Pilot Ink Co., Ltd.Inventors: Kuniyuki Senga, Jun Sugai, Shigehiro Koide
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Patent number: 6479141Abstract: A photocatalytic titanium dioxide coating composition is described, which comprises (a) finely-divided titanium dioxide particles exhibiting photocatalytic activity, (b) particles of an inorganic compound other than titanium dioxide, or particles of an organic compound convertible to particles of an inorganic compound on firing, (c) a binder, and (d) a solvent. The articles of an inorganic compound have an average particle diameter larger than that of the finely divided titanium dioxide particles and falls within the range of about 0.1 &mgr;m to about 1.0 &mgr;m. The inorganic compound particles are substantially insoluble in the solvent. The amount of the inorganic compound particles is in the range of about 0.5% to about 7% by weight based on the weight of the finely divided titanium dioxide particles. By coating a surface of a substrate with the coating composition, a coating film exhibiting excellent photocatalytic activity and no interference color is formed.Type: GrantFiled: October 2, 2000Date of Patent: November 12, 2002Assignee: Showa Denko K.K.Inventors: Masayuki Sanbayashi, Masahiro Ohmori