43 patents
Utility
Method for Producing Trichlorosilane and Device for Producing Trichlorosilane
28 Oct 20
A production method is a method for producing trichlorosilane, the method including opening and closing, with use of a non-sliding valve (b1 to b4), an entry channel (f1), an exit channel (f2), a discharge channel (f31), and a discharge channel (f32) through each of which metallurgical grade silicon powder flows in a system for producing the trichlorosilane, the non-sliding valve including a valve body capable of being rotated without coming into contact with a valve seat.
Kenji HIROTA, Katsuya OGIHARA
Filed: 15 Nov 18
Utility
Membrane-electrode-gasket Assembly for Alkaline Water Electrolysis
28 Oct 20
A membrane-electrode-gasket assembly for alkaline water electrolysis, the assembly including: a separating membrane having first and second membrane faces; a first electrode arranged in contact with the first membrane face; and an insulating gasket holding the membrane and the electrode as one body, the gasket including: first and second faces for contacting with anode- and cathode-side frames respectively; a slit part opening toward an inner side of the gasket and receiving the entire peripheries of the membrane and the electrode; first and second parts facing with each other across the slit part; and a continuous part arranged on an outer periphery side of the slit part, uniting the first and second parts into one body, and sealing an outer periphery end of the slit part, wherein the first and second parts sandwich therebetween to hold the entire peripheries of the membrane and the electrode received in the slit part into one body.
Yasuyuki TANAKA, Harumi SUEOKA
Filed: 29 Nov 18
Utility
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21 Oct 20
To provide (i) a new internal member capable of accelerating reaction between a gas and a solid, (ii) a fluidized-bed reactor in which such an internal member is placed, and (iii) a method for producing trichlorosilane with use of such a fluidized-bed reactor, an internal member in accordance with an embodiment of the present invention is an internal member for use in a fluidized-bed reactor, the internal member including at least one resistive element having an upper surface having a conical or pyramid-shaped portion.
Yasuyuki SAKAGAMI, Takuya MAJIMA, Yoshiaki YAMASHITA
Filed: 15 Jan 18
Utility
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21 Oct 20
Provided is a method for efficiently producing ferric citrate hydrate with high purity and various specific surface areas.
Takayuki Miyaoku, Kohei Saito
Filed: 8 Nov 18
Utility
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7 Oct 20
A boron structure body includes boron having each concentration of Ti, Al, Fe, Cr, Ni, Co, Cu, W, Ta, Mo and Nb being 0.1 ppmw or less and having a thickness of 0.8 to 5 mm.
Junya SAKAI, Tomohiro YAMAMATO, Yuuki YOSHIOKA, Shouji FUJII
Filed: 11 Oct 18
Utility
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30 Sep 20
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: 15 Nov 18
Utility
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30 Sep 20
An object of the present invention is to prevent stress-corrosion cracking of a header (40) of a reactor.
Kenji HIROTA, Katsuya OGIHARA
Filed: 15 Nov 18
Utility
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23 Sep 20
A method for manufacturing polycrystalline silicon fragments includes producing a polycrystalline silicon rod by the Siemens method; crushing the polycrystalline silicon rod to obtain polycrystalline silicon fragments; and cleaning by etching the polycrystalline silicon fragments in a cleaning tank.
Shigeki NISHIMURA
Filed: 18 Apr 18
Utility
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23 Sep 20
A method of manufacturing is provided for obtaining ferric citrate by a simple drying operation, the ferric citrate having a high purity, a high specific surface area, and a reduced water-soluble organic solvent content.
Takayuki Miyaoku, Kohei Saito
Filed: 21 Jan 19
Utility
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23 Sep 20
A group III nitride single crystal substrate including a main surface, the main surface including: a center; a periphery; an outer region whose distance from the center is greater than 30% of a first distance, the first distance being a distance from the center to the periphery; and an inner region whose distance from the center is no more than 30% of the first distance, wherein a ratio (νA−νB)/νB is within the range of ±0.1%, wherein νA is a minimum value of peak wave numbers of micro-Raman spectra in the inner region; and νB is an average value of peak wave numbers of micro-Raman spectra in the outer region.
Masayuki FUKUDA, Toru NAGASHIMA
Filed: 20 Sep 18
Utility
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9 Sep 20
Katsuhiro MORI, Toshimitsu HIRAREN, Junji MOMODA
Filed: 6 Jun 17
Utility
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2 Sep 20
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: 15 Nov 18
Utility
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2 Sep 20
An object is to prevent corrosion and stress-corrosion cracking that would be caused by hydrochloric acid which would be formed at or near a filter element (80).
Kenji HIROTA, Katsuya OGIHARA
Filed: 15 Nov 18
Utility
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24 Aug 20
A method for effectively removing minute impurities of 1 μm or less in size that are present on a surface of an aluminum nitride single-crystal substrate without etching the surface includes scrubbing a surface of an aluminum nitride single-crystal substrate using a polymer compound material having lower hardness than an aluminum nitride single crystal, and an alkali aqueous solution having 0.01-1 mass % concentration of potassium hydroxide or sodium hydroxide, the alkali aqueous solution being absorbed in the polymer compound material.
Masao Ariyuki
Filed: 20 Aug 15
Utility
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5 Aug 20
Yoshiki SEIKE, Seiji TONO, Kenji KOBAYASHI, Sei NEGORO
Filed: 3 Feb 20
Utility
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22 Jul 20
A primer composition for optical articles includes (A) a urethane prepolymer which is a reaction product of an aromatic polyisocyanate compound and a polyol compound, and which has a reactive group at an end, the reactive group being selected from among an isocyanate group and a hydroxyl group, (B) a light absorbing compound which has a maximum absorption wavelength within the range of from 320 nm to 650 nm (inclusive) and (C) an organic solvent which has a solubility parameter of 8 (cal/cm3)1/2 or more, while containing no active hydrogen.
Junji MOMODA, Shinobu IZUMI, Taichi HANASAKI
Filed: 10 Jun 18
Utility
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24 Jun 20
This surface-treated sol-gel silica is characterized by containing sol-gel silica having an average particle size of 0.05 μm or more and 2.0 μm or less as measured by laser diffraction scattering and a surface treatment agent on the surface of the sol-gel silica.
Hiromasa FUJIOKA, Osamu TANAKA, Hiroaki TAIRA, Naoki MIKAMI, Toshiaki OOTANI
Filed: 28 Aug 18
Utility
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22 Jun 20
Fumiaki Iwasaki, Hiromasa Yamamoto, Kenji Tanaka, Masahiko Seki, Yoshiki Seike
Filed: 25 Jul 17
Utility
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22 Jun 20
To provide a laminate comprising a pair of polycarbonate optical sheet or film which are laminated together through a polarizing film layer and an adhesive layer of a photochromic composition comprising (I) a polyurethane urea resin and (II) a photochromic compound and having excellent photochromic properties, adhesion, heat resistance, perspiration resistance and excellent adhesion to a lens substrate.
Katsuhiro Mori, Toshimitsu Hiraren, Manami Oshio
Filed: 21 Dec 16
Utility
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17 Jun 20
Masayuki MIYAZAKI, Junji TAKENAKA
Filed: 10 Jul 18