Patents by Inventor Yoshiki Katada
Yoshiki Katada 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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Patent number: 10640591Abstract: [Object] To provide a method for stably producing a water-absorbent resin in powder form or particle form, which has excellent physical properties such as water absorption performance and the like, without any production trouble. [Solution] A method for producing a water-absorbent resin includes mixing a monomer composition, which contains at least a monomer and a pyrolytic polymerization initiator, with an organic solvent, a temperature of the organic solvent is not lower than 70° C. at time of mixing, and when a mass per unit time of the monomer in the monomer composition to be mixed with the organic solvent is expressed as an amount per unit volume of the organic solvent, a lower limit is 0.01 g/ml/min, and an upper limit is 0.2 g/ml/min.Type: GrantFiled: December 3, 2015Date of Patent: May 5, 2020Assignee: NIPPON SHOKUBAI CO., LTD.Inventors: Motohiro Imura, Shin-ichi Fujino, Ryota Wakabayashi, Kozo Nogi, Koji Honda, Yoshiki Katada, Kenji Kadonaga
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Publication number: 20170267793Abstract: [Object] To provide a method for stably producing a water-absorbent resin in powder form or particle form, which has excellent physical properties such as water absorption performance and the like, without any production trouble. [Solution] A method for producing a water-absorbent resin includes mixing a monomer composition, which contains at least a monomer and a pyrolytic polymerization initiator, with an organic solvent, a temperature of the organic solvent is not lower than 70° C. at time of mixing, and when a mass per unit time of the monomer in the monomer composition to be mixed with the organic solvent is expressed as an amount per unit volume of the organic solvent, a lower limit is 0.01 g/ml/min, and an upper limit is 0.2 g/ml/min.Type: ApplicationFiled: December 3, 2015Publication date: September 21, 2017Inventors: Motohiro IMURA, Shin-ichi FUJINO, Ryota WAKABAYASHI, Kozo NOGI, Koji HONDA, Yoshiki KATADA, Kenji KADONAGA
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Patent number: 9682362Abstract: The purpose of the present invention is to provide a process for stably and continuously producing a water-absorbing resin, specifically, a process for stably and continuously producing a water-absorbing resin, the process including a gas absorbing step in which a gas discharged from a step of producing a water-absorbing resin is efficiently and persistently absorbed. A main point of this process for producing a water-absorbing polyacrylic acid (salt) resin further including a step of absorbing a gas discharged from a production step of the water-absorbing polyacrylic acid (salt) resin in water having a pH of 7 to 11 and a polyvalent metal ion content of 100 ppm or less or a step of absorbing the gas in water having a pH of 7 to 11, the pH of the water having been adjusted by mixing a water having an electric conductivity of 500 (?S/cm) or less at 25° C. with an alkali compound.Type: GrantFiled: November 14, 2014Date of Patent: June 20, 2017Assignee: NIPPON SHOKUBAI CO., LTD.Inventors: Makoto Nagasawa, Jiro Sano, Yoshiki Katada, Kunihiko Ishizaki
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Publication number: 20160279602Abstract: The purpose of the present invention is to provide a process for stably and continuously producing a water-absorbing resin, specifically, a process for stably and continuously producing a water-absorbing resin, the process including a gas absorbing step in which a gas discharged from a step of producing a water-absorbing resin is efficiently and persistently absorbed. A main point of this process for producing a water-absorbing polyacrylic acid (salt) resin further including a step of absorbing a gas discharged from a production step of the water-absorbing polyacrylic acid (salt) resin in water having a pH of 7 to 11 and a polyvalent metal ion content of 100 ppm or less or a step of absorbing the gas in water having a pH of 7 to 11, the pH of the water having been adjusted by mixing a water having an electric conductivity of 500 (?S/cm) or less at 25° C. with an alkali compound.Type: ApplicationFiled: November 14, 2014Publication date: September 29, 2016Inventors: Makoto NAGASAWA, Jiro SANO, Yoshiki KATADA, Kunihiko ISHIZAKI
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Patent number: 8316908Abstract: [Object] When press-bonding superposed curved glass plates together by a plurality of curved rolls, even if curvature of the curved glass changes, a preliminary bonding method and device of a laminated glass can cope with a variety of curvatures of the curved glass plate by an easy adjustment.Type: GrantFiled: June 16, 2009Date of Patent: November 27, 2012Assignee: Central Glass Company, LimitedInventors: Kenji Ujiie, Yoshiki Katada, Koji Tamai, Chikao Nakashima
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Publication number: 20110100530Abstract: [Object] When press-bonding superposed curved glass plates together by a plurality of curved rolls, even if curvature of the curved glass changes, a preliminary bonding method and device of a laminated glass can cope with a variety of curvatures of the curved glass plate by an easy adjustment.Type: ApplicationFiled: June 16, 2009Publication date: May 5, 2011Inventors: Kenji Ujiie, Yoshiki Katada, Koji Tamai, Chikao Nakashima
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Patent number: 7497096Abstract: An apparatus for conveying a curved glass sheet includes a disk roll conveyor and a roll conveyor set positioned downstream of the disk roll conveyor. The roll conveyor set has a plurality of roll conveyor units. In this apparatus, first and second adjusting devices are operable to provide the curved glass sheet with (a) a first conveyance route in which the disk roll conveyor and the roll conveyor set are in a horizontal position to provide a smooth horizontal conveyance surface or (b) a second conveyance route in which the disk roll conveyor is in a downward position and in which at least one roll conveyor unit at a downstream side of the roll conveyor set is in an upward position to provide a continuous concave conveyance surface.Type: GrantFiled: March 4, 2004Date of Patent: March 3, 2009Assignee: Central Glass Company, LimitedInventors: Osamu Asai, Yoshiki Katada, Kenji Ujiie
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Publication number: 20040261456Abstract: An apparatus for conveying a curved glass sheet includes a disk roll conveyor and a roll conveyor set positioned downstream of the disk roll conveyor. The roll conveyor set has a plurality of roll conveyor units. In this apparatus, first and second adjusting devices are operable to provide the curved glass sheet with (a) a first conveyance route in which the disk roll conveyor and the roll conveyor set are in a horizontal position to provide a smooth horizontal conveyance surface or (b) a second conveyance route in which the disk roll conveyor is in a downward position and in which at least one roll conveyor unit at a downstream side of the roll conveyor set is in an upward position to provide a continuous concave conveyance surface.Type: ApplicationFiled: March 4, 2004Publication date: December 30, 2004Applicant: Central Glass Company, LimitedInventors: Osamu Asai, Yoshiki Katada, Kenji Ujiie
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Patent number: 5028202Abstract: A glass plates positioning device for positioning overlapped larger and smaller glass plates on a belt conveyer is disclosed, which includes a light device and pushing portions. The lift device lifts up the glass plates from the belt conveyer and lowers the same onto the belt conveyer. In a lifted position, the glass plates are horizontally universally movably supported by the lift device and positioned by the pushing portions. Each pushing portion is shaped like a spinning top, which includes concentrically connected smaller and larger disc portions. Each pushing portion horizontally abuts against and pushes each side edge of the glass plates to a predetermined position, wherein side surface of the larger disc is in contact with the edge of the smaller glass plate and the side surface of the smaller disc is in contact with the edge of the larger glass plate. After the positioning of the glass plates, the glass plates are lowered onto the belt conveyer by the lift device.Type: GrantFiled: July 31, 1990Date of Patent: July 2, 1991Assignee: Central Glass Company, LimitedInventors: Yoshiki Katada, Masami Nishitani
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Patent number: 4979411Abstract: There is disclosed a device for cutting a superfluous edge portion of an interlayer of a laminated glass. The device comprises an ultrasonic cutter including an ultrasonic generator and a cutter knife, the cutter knife being ultrasonically vibrated to cut the superfluous edge portion thereby to produce a cut part of the same; a structure for moving the ultrasonic cutter along a given way extending around the periphery of the laminated glass; and a dag holder moved together with the ultrasonic cutter and slidably carrying thereon the cut part of the superfluous edge portion to promote flowing of the cut part from the remainder of the superfluous edge portion toward a given position.Type: GrantFiled: June 26, 1989Date of Patent: December 25, 1990Assignee: Central Glass Company, LimitedInventors: Akira Murasaki, Chiaki Taguchi, Yoshiki Katada