223 patents
Page 10 of 12
Utility
Quaternary Alkyl Ammonium Hypochlorite Solution, Method of Producing the Same, and Method for Processing Semiconductor Wafers
27 May 21
Provided is a method of producing a quatenary alkyl ammonium hypochlorite solution with an excellent storage stability.
Takafumi SHIMODA, Yuki KIKKAWA, Tomoaki SATO, Takayuki NEGISHI
Filed: 20 Nov 20
Utility
Fluidized-bed-type reactor, and method for manufacturing trichlorosilane
18 May 21
A fluidized-bed reactor (1A) includes a reaction vessel (10A) configured to contain metallurgical grade silicon powder and a hydrogen chloride gas, and a portion of a side wall (w) which portion extends along at least 80% of a height extending from a gas feed opening (21), which is provided in a lower part of the reaction vessel (10A), to a top face of a fluid bed (40) has such a tapered shape that a cross section of the reaction vessel (10A) which cross section is taken perpendicular to a height direction of the reaction vessel (10A) increases in area in an upward direction.
Kenji Hirota, Katsuya Ogihara
Filed: 16 Nov 18
Utility
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4 May 21
Provided is a method for producing polycrystalline silicon at a lighter environmental load and at low production cost.
Yuichi Inoue, Masami Enokuchi, Kotaro Okamura
Filed: 5 Oct 17
Utility
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29 Apr 21
The invention is a polyrotaxane monomer (A) having a composite molecular structure composed of cyclic molecules and an axial molecule that skewer-like threads through the rings of the cyclic molecules and has a bulky group at both ends thereof so as not to dethread the rings, and the polyrotaxane monomer has a polymerizable functional group in the molecule and has a water content of 5000 ppm or less.
Yasutomo SHIMIZU, Takayoshi KAWASAKI, Mitsuki TOCHI
Filed: 16 May 19
Utility
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22 Apr 21
An aluminum nitride particle including: a plurality of planes randomly arranged in a surface of the particle, the plurality of planes forming an obtuse ridge part or an obtuse valley part in the surface of the particle, the plurality of planes being observable in a scanning electron micrograph with 500 times magnification; wherein the particle has a longer diameter L of 20 to 200 μm; a ratio L/D of the longer diameter L (unit: μm) to a shorter diameter D (unit: μm) of the particle is 1 to 1.25; and the plurality of planes comprise a first plane, wherein an area S (unit: μm2) of the first plane satisfies S/L≥1.0 μm.
Akimasa KURAMOTO, Yukihiro KANECHIKA
Filed: 27 Apr 18
Utility
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22 Apr 21
A crushed polycrystalline silicon lump is provided in which a surface metal concentration is 15.0 pptw or less and preferably 7.0 to 13.0 pptw, and in the surface metal concentration, a surface tungsten concentration is 0.9 pptw or less and preferably 0.40 to 0.85 pptw, and a surface cobalt concentration is 0.3 pptw or less and preferably 0.04 to 0.08 pptw.
Shigeki Nishimura
Filed: 25 Mar 19
Utility
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22 Apr 21
A silicone oil-treated fumed silica and a method of producing the silicone oil-treated fumed silica are provided.
Takayuki MAEHARA, Qingtao ZHOU, Jianzhang DAI
Filed: 27 Mar 18
Utility
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22 Apr 21
The electrolysis vessel for alkaline water electrolysis includes an anode end unit, a cathode end unit, anode chamber cells, cathode chamber cells, and separating membranes.
Yasuyuki TANAKA, Ryouta UMEBAYASHI
Filed: 12 Mar 19
Utility
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13 Apr 21
A single crystal silicon plate-shaped body as cut out from an upper portion of a straight body portion of a CZ method single crystal silicon ingot has an interstitial oxygen concentration in a crystal is 25 ppma to 45 ppma and a substitutional carbon concentration is 0.5 ppma or less in a radial center.
Isao Masada, Shoji Tachibana
Filed: 30 Jun 17
Utility
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23 Mar 21
A metal powder having a BET specific surface area of 5 to 250 m2/g is obtained by contacting and mixing together a gas of a metal chloride (metal source gas) and a reducing gas (e.g., hydrogen gas) that have been separately heated so as to instantaneously form fine metal particles based on the gas phase reduction reaction thereof, and collecting the fine metal particles from the gas stream after the reaction.
Hiroyuki Oda, Naoto Mochizuki
Filed: 7 Apr 17
Utility
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18 Mar 21
A hammer (1) for use in shape processing of a silicon block is a hammer for crushing a silicon block so as to carry out shape processing with respect to the silicon block, the hammer including: a handle (10) made of a resin; and a hammer head (20) fixed to the handle (10).
Kazuhiro KAWAGUCHI
Filed: 20 Feb 19
Utility
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16 Mar 21
A method of protecting a teat opening with a teat opening protection patch, which is stuck to portions inclusive of the teat openings of livestock, and includes a laminate 1 of an elastic sheet 2 and an adhesive layer 3 laminated on one surface of the elastic sheet 2, the laminate 1 having a double-stretched tensile stress in a range of 0.1 to 5 N.
Yoji Inui, Hitoshi Kondo, Katsuhiro Shirai
Filed: 8 Oct 19
Utility
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16 Mar 21
Gypsum derived from waste gypsum boards is calcined and converted into gypsum granules including hemihydrate and/or anhydrous type III gypsum.
Shingo Hiranaka, Kentaro Matsuo, Makoto Kataoka
Filed: 22 Oct 19
Utility
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11 Mar 21
A bismuth compound which is little toxic, insoluble in a monomer, usable for optical purpose and used as a substitute for a lead compound, in which a phosphoric acid ester having a (meth)acrylic group(s) is bonded to bismuth, and a method of producing the bismuth compound by reacting bismuth (meth)acrylate or bismuth subsalicylate with a phosphoric acid ester having a (meth)acrylic group(s) and carrying out dehydration.
Takayoshi KAWASAKI, Junji MOMODA, Tomohiro KAWAMURA, Mayumi KISHI, Michihito NAKATANI
Filed: 14 Mar 19
Utility
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4 Mar 21
A treatment liquid for cleaning a semiconductor wafer is a treatment liquid contains (A) a hypochlorite ion and (C) a solvent, in which pH at 25° C. is more than 7 and less than 12.0.
Takafumi Shimoda, Takayuki Negishi, Yuki Kikkawa, Seiji Tono
Filed: 15 Jan 19
Utility
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2 Mar 21
Provided is a fluidized bed reactor (1) that makes it possible to stably measure a temperature distribution in the fluidized bed reactor (1) while no damage is caused to a temperature measuring section.
Kenji Hirota, Katsuya Ogihara
Filed: 16 Nov 18
Utility
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25 Feb 21
A method of manufacturing polycrystalline silicon rod, wherein a reactor for manufacturing a polycrystalline silicon rod includes gas supply nozzles, and at least one nozzle is a flow rate amplification nozzle having a function that the amount of a silicon deposition raw material gas supplied to the nozzle can be increased.
Takafumi Tatsukawa, Yasumasa Aimoto
Filed: 27 Mar 19
Utility
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25 Feb 21
A separating membrane-gasket-protecting member assembly including: an ion-permeable separating membrane; a gasket holding a periphery of the membrane; and a frame-shaped protecting member holding the gasket; the protecting member including: a frame-shaped base body; and a frame-shaped lid member; the base body including: a receiving part being arranged in an inner periphery of the base body and receiving the gasket and the lid member; and a supporting part extending toward an inner periphery side of the base body and supporting the gasket received in the receiving part in a direction crossing a main face of the membrane; and the lid member having dimensions such that the lid member can be received in the receiving part, wherein the gasket and the lid member are received in the receiving part such that the gasket is sandwiched between the supporting part and the lid member.
Yasuyuki TANAKA, Yasunori MIYAGAWA
Filed: 12 Mar 19
Utility
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16 Feb 21
A hexagonal boron nitride powder whose maximum absorption peak within the range of 3,100 to 3,800 cm−1 of the diffuse reflectance fourier transform infrared spectrum is existent at 3,530 to 3,590 cm−1 and which is able to provide high heat conductivity, dielectric strength and copper foil peel strength to a resin composition obtained by filling the powder into a resin, and a process for producing the above boron nitride powder by mixing together an oxygen-containing boron compound, a carbon source having a sulfur concentration of 1,000 to 10,000 ppm and an oxygen-containing calcium compound in a specific ratio and reduction nitriding the mixture.
Shota Daiki, Ryuji Ishimoto
Filed: 28 Nov 17
Utility
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16 Feb 21
Yasutomo Shimizu, Takayoshi Kawasaki, Junji Momoda, Mitsuki Tochi
Filed: 16 Nov 17