Patents by Inventor Hajime Katayama
Hajime Katayama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20250100890Abstract: The present invention relates to a method for producing a spherical silica powder, the method including, firing a spherical and porous silica precursor in a state where particles of the silica precursor are in contact with each other, in which the silica precursor has a sodium concentration of 1 ppm by mass to 300 ppm by mass and assuming the sodium concentration as x (ppm by mass) and a heat treatment temperature as y (° C.), the silica precursor is subjected to the heat treatment at a temperature satisfying ?0.97x+1180<y<?0.97x+1310, or the silica precursor has a pore volume of 0.1 ml/g to 2.0 ml/g and a specific surface area of 200 m2/g to 1000 m2/g.Type: ApplicationFiled: December 11, 2024Publication date: March 27, 2025Applicants: AGC Inc., AGC SI-TECH CO., LTD.Inventors: Hajime KATAYAMA, Kohta FUKUMOTO, Masashi KONDO, Hiromichi KAMO, Shinnosuke ARIMITSU
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Patent number: 12138998Abstract: A tailgate includes a tailgate main body including a resin inner panel and a resin outer panel forming an inner space between itself and the inner panel; a pair of reinforcement members disposed in the inner space to extend in an up-down direction along both side portions of the tailgate main body, and attached to the inner panel; a functional component disposed in a vehicle widthwise intermediate position in the inner space and attached to the inner panel; and a tether having both ends fixed to the pair of reinforcement members. The functional component has an engagement part that defines an insertion hole for the tether, and the engagement part is formed with a notch that extends from an inner peripheral edge of the insertion hole to hold the tether.Type: GrantFiled: March 11, 2022Date of Patent: November 12, 2024Assignee: YACHIYO INDUSTRY CO., LTD.Inventors: Sho Notoya, Hajime Katayama
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Publication number: 20240308858Abstract: The present invention relates to hollow silica particles each including a shell layer that includes silica and having a space portion inside the shell layer, in which when A (g/cm3) is a particle density determined by density measurement with a dry pycnometer using argon gas and B (m2/g) is a BET specific surface area, the hollow silica particles have a product (A×B) of the particle density and the BET specific surface area of 1 m2/cm3 to 120 m2/cm3.Type: ApplicationFiled: May 28, 2024Publication date: September 19, 2024Applicants: AGC Inc., AGC SI-TECH CO., LTD.Inventors: Hiromichi KAMO, Hajime KATAYAMA
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Publication number: 20240253431Abstract: A tailgate includes a tailgate main body including a resin inner panel and a resin outer panel forming an inner space between itself and the inner panel; a pair of reinforcement members disposed in the inner space to extend in an up-down direction along both side portions of the tailgate main body, and attached to the inner panel; a functional component disposed in a vehicle widthwise intermediate position in the inner space and attached to the inner panel; and a tether having both ends fixed to the pair of reinforcement members. The functional component has an engagement part that defines an insertion hole for the tether, and the engagement part is formed with a notch that extends from an inner peripheral edge of the insertion hole to hold the tether.Type: ApplicationFiled: March 11, 2022Publication date: August 1, 2024Inventors: Sho NOTOYA, Hajime KATAYAMA
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Publication number: 20240209210Abstract: The present invention relates to a spherical silica powder, having a median diameter d50 of 0.5 ?m to 20 ?m, and a product A×d50, which is a product of a specific surface area A (m2/g) and the median diameter d50 (?m), of 2.7 ?m·m2/g to 5.0 ?m·m2/g. The spherical silica powder may have a dielectric loss tangent of 0.0020 or less at a frequency of 1 GHz.Type: ApplicationFiled: January 24, 2024Publication date: June 27, 2024Applicants: AGC Inc., AGC SI-TECH CO., LTD.Inventors: Hiromichi KAMO, Hajime KATAYAMA, Kohta FUKUMOTO
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Publication number: 20240122818Abstract: The present invention relates to light-scattering silica particles having a light scattering property, the light-scattering silica particles including: a plurality of hollow portions each having a closed pore structure inside the particle, in which the light-scattering silica particles have a volume-based cumulative 50% particle diameter of 1 ?m to 500 ?m and an average circularity of 0.80 or more, and in use of the light-scattering silica particles, a reflectance A of a water cake containing 20 mg/cm2 of silica per measurement cross-sectional area at an ultraviolet wavelength of 310 nm is 30% or more.Type: ApplicationFiled: December 27, 2023Publication date: April 18, 2024Applicants: AGC Inc., AGC SI-TECH CO., LTD.Inventors: Hajime KATAYAMA, Masashi KONDO, Kohta FUKUMOTO, Yuriko TAKANO, Shinnosuke ARIMITSU, Takeshi MURAKAMI, Kenji HIGASHI, Daisuke YAMAZUMI
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Publication number: 20230302431Abstract: The present invention relates to an adsorbent including: an inorganic porous body; and an amine compound, in the inorganic porous body has an oil absorption value of 230 ml/100 g or more, and a peak diameter of a pore size, which is obtained based on a nitrogen adsorption method, of 20 nm or more and 100 nm or less. The present invention relates to an adsorbent including: an inorganic porous body; and an amine compound, in which the inorganic porous body has a pore volume of 1.2 cm3/g or more and 3.5 cm3/g or less, and a peak diameter of a pore size, which is obtained based on a nitrogen adsorption method, of 20 nm or more and 100 nm or less.Type: ApplicationFiled: May 12, 2023Publication date: September 28, 2023Applicants: AGC Inc., AGC SI-TECH CO., LTD.Inventors: Eisuke MUROTANI, Ryohei KOGUCHI, Taku YAMADA, Katsumasa NAKAHARA, Hajime KATAYAMA, Masaki INOUE
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Patent number: 11667176Abstract: To improve the appearance of a tailgate provided with a rear spoiler, a tailgate of a vehicle includes a tailgate main body having a rear window opening a rear spoiler extending rearward from a part of the tailgate main body above the rear window opening a rear window panel that is mounted on an outer peripheral portion of the rear window opening of an outer surface of the tailgate main body and closes the rear window opening and a plate-shaped shield member mounted on a lower surface of the rear spoiler so as to shield a space formed between the lower surface of the rear spoiler and an upper end portion of the rear window panel.Type: GrantFiled: January 8, 2021Date of Patent: June 6, 2023Assignee: YACHIYO INDUSTRY CO., LTD.Inventors: Hajime Katayama, Sho Notoya
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Publication number: 20230113676Abstract: To improve the appearance of a tailgate provided with a rear spoiler, a tailgate of a vehicle includes a tailgate main body having a rear window opening a rear spoiler extending rearward from a part of the tailgate main body above the rear window opening a rear window panel that is mounted on an outer peripheral portion of the rear window opening of an outer surface of the tailgate main body and closes the rear window opening and a plate-shaped shield member mounted on a lower surface of the rear spoiler so as to shield a space formed between the lower surface of the rear spoiler and an upper end portion of the rear window panel.Type: ApplicationFiled: January 8, 2021Publication date: April 13, 2023Inventors: Hajime KATAYAMA, Sho NOTOYA
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Publication number: 20220411275Abstract: The present invention related to a hollow silica particle including: a shell layer containing silica; and a space formed inside the shell layer, in which the hollow silica particle has a particle density as measured by a dry pycnometer density measurement using helium gas of 2.00 g/cm3 or more and a particle density as measured by a dry pycnometer density measurement using oxygen gas of lower than 2.00 g/cm3.Type: ApplicationFiled: August 19, 2022Publication date: December 29, 2022Applicants: AGC Inc., AGC SI-TECH CO., LTD.Inventors: Toshiya MATSUBARA, Hyunji KIM, Hajime KATAYAMA, Yusuke ARAI
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Publication number: 20220396490Abstract: The present invention relates to hollow silica particles, which each includes a shell layer containing silica and a space inside the shell layer, in which the hollow silica particles have a peak intensity derived from SiOH at a wavenumber of around 3,746 cm?1 of 0.60 or less by infrared spectroscopy, a relative permittivity at 1 GHz of from 1.3 to 5.0 and a dielectric loss tangent at 1 GHz of from 0.0001 to 0.05.Type: ApplicationFiled: August 22, 2022Publication date: December 15, 2022Applicants: AGC Inc., AGC SI-TECH CO., LTD.Inventors: Hiromichi KAMO, Masashi KONDO, Hajime KATAYAMA
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Patent number: 11479673Abstract: To provide a method for producing lanthanum hexaboride-containing composite particles which are capable of forming a formed product having sufficiently high transparency and which are excellent in weather resistance, by a simple operation without calcination treatment at high temperature, and a method for producing a formed product using it. Also provided is a method for producing composite particles, which involves: reacting at least one silica precursor selected from a tetraalkoxysilane, its hydrolysate and its condensate, in the presence of lanthanum hexaboride particles, a volatile base, water and an organic solvent to obtain a first reaction mixture, and reacting the first reaction mixture with at least one silicon compound selected from an amino-modified silicone, an alkylsilane and an aminosilane, or the silicon compound and the silica precursor added, to obtain a second reaction mixture containing lanthanum hexaboride-containing composite particles.Type: GrantFiled: September 17, 2019Date of Patent: October 25, 2022Assignee: AGC Inc.Inventors: Hajime Katayama, Hiroshi Aruga
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Publication number: 20200010684Abstract: To provide a method for producing lanthanum hexaboride-containing composite particles which are capable of forming a formed product having sufficiently high transparency and which are excellent in weather resistance, by a simple operation without calcination treatment at high temperature, and a method for producing a formed product using it. A method for producing composite particles, which comprises: reacting at least one silica precursor selected from the group consisting of a tetraalkoxysilane, its hydrolysate and its condensate, in the presence of lanthanum hexaboride particles, a volatile base, water and an organic solvent to obtain a first reaction mixture, and reacting the first reaction mixture with at least one silicon compound selected from the group consisting of an amino-modified silicone, an alkylsilane and an aminosilane, or the silicon compound and the silica precursor added, to obtain a second reaction mixture containing lanthanum hexaboride-containing composite particles.Type: ApplicationFiled: September 17, 2019Publication date: January 9, 2020Applicant: AGC Inc.Inventors: Hajime KATAYAMA, Hiroshi ARUGA
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Patent number: 9718333Abstract: Provided is a water discharge structure for a sunroof device, the water discharge structure being capable of suitably preventing rainwater, etc. from penetrating a stationary roof. A water discharge structure for a sunroof device is configured so as to comprise: a panel body for closing an opening formed in the stationary roof of a vehicle; frame members arranged along edges of the stationary roof and provided with water discharge grooves; brackets mounted to the frame members and supporting the panel body; and water discharge guide plates disposed between the panel body and the brackets and conducting rainwater etc., which have entered along the seal surfaces between the panel body and the edges of the stationary roof, to the water discharge grooves.Type: GrantFiled: March 12, 2015Date of Patent: August 1, 2017Assignee: YACHIYO INDUSTRY CO., LTD.Inventors: Hajime Katayama, Kanehiro Otani
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Publication number: 20160207380Abstract: Provided is a water discharge structure for a sunroof device, the water discharge structure being capable of suitably preventing rainwater, etc. from penetrating a stationary roof. A water discharge structure for a sunroof device is configured so as to comprise: a panel body for closing an opening formed in the stationary roof of a vehicle; frame members arranged along edges of the stationary roof and provided with water discharge grooves; brackets mounted to the frame members and supporting the panel body; and water discharge guide plates disposed between the panel body and the brackets and conducting rainwater etc., which have entered along the seal surfaces between the panel body and the edges of the stationary roof, to the water discharge grooves.Type: ApplicationFiled: March 12, 2015Publication date: July 21, 2016Inventors: Hajime Katayama, Kanehiro Otani
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Patent number: 8685533Abstract: Provided is a fluororesin film comprising a fluororesin film body which contains hydrophobized silicon oxide-coated metal oxide particles and a fluororesin. The fluororesin film also contains a coating film in direct contact with the fluororesin film body and made of a coating film-forming composition containing at least one resin selected from the group consisting of a polyester, acryl polyol, acryl resin, acryl urethane resin, acryl silicone resin, vinyl acetate resin and a fluororesin, formed on one side of the fluororesin film body.Type: GrantFiled: December 14, 2010Date of Patent: April 1, 2014Assignee: Asahi Glass Company, LimitedInventors: Hajime Katayama, Hiroshi Aruga
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Patent number: 8603412Abstract: A microchannel structure is provided wherein supplied fluids are prevented from transuding via a lamination interface into channels for a mixture or reaction product. A method is further provided for producing an emulsion having a uniform particle size under a high pressure condition by using the microchannel structure. The microchannel structure comprises one or more layers having notches to constitute channels, laminated and pressed between a pair of frames having an outside communicating hole to constitute a channel, so as to form microchannels to mix/react fluids, channels to supply the fluids to the microchannels, and a channel to discharge the fluids from the microchannels, wherein a channel for discharging a transudation fluid is provided to recover a fluid having transuded at a lamination interface so as not to let it enter into the channels including the microchannels and discharge it to the outside.Type: GrantFiled: April 25, 2012Date of Patent: December 10, 2013Assignees: Asahi Glass Company, Limited, AGC Si-Tech Co., Ltd.Inventor: Hajime Katayama
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Publication number: 20130285418Abstract: Provided is a sunroof apparatus comprising: a sunroof panel to move to open or close the opening; a frame to support the sunroof panel so that the sunroof panel is movable; and a deflector mechanism to be disposed along a front edge of the opening and to go up or down in accordance with an opening or closing movement of the sunroof panel. The deflector mechanism comprises a pair of arms connected to each of left and right sides of the frame so that each arm rotates; an air deflector blade connecting the pair of arms with each other; an urging device to urge the pair of arms with the air deflector blade upward; and a drain gutter equipped on the air deflector blade along a width of the blade, and a receiving part of the drain gutter is positioned always under the front edge of the opening.Type: ApplicationFiled: March 18, 2013Publication date: October 31, 2013Applicant: Yachiyo Industry Co., Ltd.Inventors: Hajime Katayama, Kazuya Oshima
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Patent number: 8282991Abstract: Hydrophobized silicon oxide-coated metal oxide particles excellent in dispersibility in fluororesins, durability to fluorinated compounds and ultraviolet-shielding properties, and a fluororesin film excellent in transparency, weather resistance and ultraviolet-shielding properties comprising the hydrophobized silicon oxide-coated metal oxide particles, the hydrophobized silicon oxide-coated metal oxide particles being obtained by a process including a primary and a secondary hydrophobizing treatment.Type: GrantFiled: October 7, 2009Date of Patent: October 9, 2012Assignee: Asahi Glass Company, LimitedInventor: Hajime Katayama
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Publication number: 20120213686Abstract: A microchannel structure is provided wherein supplied fluids are prevented from transuding via a lamination interface into channels for a mixture or reaction product. A method is further provided for producing an emulsion having a uniform particle size under a high pressure condition by using the microchannel structure. The microchannel structure comprises one or more layers having notches to constitute channels, laminated and pressed between a pair of frames having an outside communicating hole to constitute a channel, so as to form microchannels to mix/react fluids, channels to supply the fluids to the microchannels, and a channel to discharge the fluids from the microchannels, wherein a channel for discharging a transudation fluid is provided to recover a fluid having transuded at a lamination interface so as not to let it enter into the channels including the microchannels and discharge it to the outside.Type: ApplicationFiled: April 25, 2012Publication date: August 23, 2012Applicants: AGC Si-Tech Co., Ltd., ASAHI GLASS COMPANY, LIMITEDInventor: Hajime KATAYAMA