Patents by Inventor Hiroyuki Kurihara

Hiroyuki Kurihara 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).

  • Patent number: 11279960
    Abstract: A method produces xylo-oligosaccharides from a biomass containing xylan and cellulose, which method is convenient and has a high yield of xylo-oligosaccharides because of inhibition of degradation of xylo-oligosaccharides into xylose. In the method of producing xylo-oligosaccharides, a biomass containing xylan and cellulose is hydrolyzed with a cellulase composition having at least activities of xylanase, cellobiohydrolase and ?-glucosidase and substantially free of ?-xylosidase activity during hydrolysis.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 22, 2022
    Assignee: Toray Industries, Inc.
    Inventors: Takuya Kasahara, Chiaki Yamada, Hiroyuki Kurihara, Katsushige Yamada
  • Patent number: 11253818
    Abstract: A method of producing cellulase includes steps (1) to (3): (1) subjecting an aqueous solution of cellulase derived from filamentous fungi to filtration through an ultrafiltration membrane with a molecular weight cut off of 100,000 to 200,000 to obtain a filtrate and concurrently obtain a concentrated enzyme liquid as a retentate; (2) further subjecting the filtrate obtained in step (1) to filtration through a second ultrafiltration membrane with a molecular weight cut off of 5,000 to 50,000 to obtain a second concentrated enzyme liquid as a retentate; and (3) mixing the concentrated enzyme liquid obtained in steps (1) and (2) to obtain cellulase derived from filamentous fungi.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: February 22, 2022
    Assignee: Toray Industries, Inc.
    Inventors: Hiroyuki Kurihara, Katsushige Yamada
  • Publication number: 20210407950
    Abstract: A via wiring formation substrate for mounting at least one semiconductor chip, the substrate including a support substrate, a releasable adhesive layer provided on the support substrate, a first insulating layer provided on the releasable adhesive layer, and a second insulating layer laminated on the first insulating layer, wherein the first insulating layer and the second insulating layer are provided with a via wiring formation via, the via wiring formation via enabling formation of via wirings which respectively correspond to a plurality of connection terminals of the semiconductor chip and which respectively connect the plurality of connection terminals, such that the via wiring formation via penetrates only through the first insulating layer and the second insulating layer without misalignment.
    Type: Application
    Filed: November 15, 2019
    Publication date: December 30, 2021
    Inventor: Hiroyuki KURIHARA
  • Patent number: 11155848
    Abstract: A method of producing a sugar liquid from cellulose-containing biomass includes step (1) of hydrolyzing cellulose-containing biomass by a filamentous fungus-derived cellulase; and step (2) of filtering a hydrolysate obtained in step (1) through an ultrafiltration membrane to recover the filamentous fungus-derived cellulase as a non-permeate and to obtain a sugar liquid as a permeate, wherein the cellulose-containing biomass is treated with one or more enzymes selected from the group consisting of pectinase, glucoamylase, and lipase at a stage previous to step (1) or in step (1).
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: October 26, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Shigeyuki Funada, Hiroyuki Kurihara, Katsushige Yamada
  • Patent number: 11096395
    Abstract: A food discoloration inhibitor contains, as an effective ingredient, a low molecular weight lignin having a molecular weight peak in a molecular weight range of 4,000 to 9,500 and/or a high molecular weight lignin having a molecular weight peak in a molecular weight range of 10,000 to 40,000, wherein the molecular weight peak is measured at a wavelength of 254 nm by GPC molecular weight analysis using an UV detector.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: August 24, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Shigeyuki Funada, Hiroyuki Kurihara, Katsushige Yamada
  • Patent number: 11091698
    Abstract: An anti-caking agent for soil includes, as effective ingredients: a lignin having a molecular weight peak, as measured by GPC molecular weight analysis using a UV detector at a wavelength of 254 nm, within the molecular weight range of 10,000 to 40,000; and a diatomaceous earth. A method of improving the growth of a plant uses the above described anti-caking agent for soil. The anti-caking agent for soil has the effect of reducing the caking of soil and improving the poor growth of a plant.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: August 17, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Shigeyuki Funada, Takahiro Arai, Hiroyuki Kurihara, Katsushige Yamada
  • Patent number: 11053516
    Abstract: A glucose composition contains, as equivalents in an aqueous solution of the composition having a glucose concentration of 100 g/L, 0-25 g/L of xylose, 0.1-10 g/L of acetic acid, 0.15-2.0 g/L of coumaric acid, and 0.007-0.28 g/L of ferulic acid. By using this glucose composition as a raw material in a method for producing a chemical product by microbial fermentation, the yield of the chemical product can be raised.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: July 6, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Shigeyuki Funada, Hiroyuki Kurihara, Katsushige Yamada
  • Publication number: 20210069647
    Abstract: A filtration device includes a continuous first unit including a first membrane that separates a liquid into first permeated and non-permeated liquids, a first adjuster that adjusts a flow rate of the first permeated liquid to be substantially constant, and a first liquid scale that detects a liquid amount, a second unit including a second membrane that separates another liquid into second permeated and non-permeated liquids, a second adjuster that adjusts a flow rate of the second permeated liquid to be substantially constant, and a second liquid scale that detects another liquid amount, a first controller that controls the liquid amount in the first storage tank based on measurement values from continuous two first units or from the continuous first and second units, and a second controller that controls the another liquid amount based on a measurement value from the second unit.
    Type: Application
    Filed: November 29, 2018
    Publication date: March 11, 2021
    Inventors: Yuka Asahi, Atsushi Minamino, Hiroyuki Kurihara, Katsushige Yamada
  • Patent number: 10844444
    Abstract: A method of producing a sugar liquid derived from a cellulose-containing biomass includes (a) saccharifying a pretreated product having alignin content of not more than 8.5% obtained by pretreatment of a cellulose-containing biomass, to obtain a saccharified liquid; (b) filtering the saccharified liquid obtained in Step (a) through a microfiltration membrane to allow formation of a cake on a membrane surface in a feed side while obtaining a sugar liquid from a permeate side; and (c) collecting the cake formed on the membrane surface in Step (b) by peeling from the membrane.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: November 24, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Yuka Asahi, Atsushi Minamino, Hiroyuki Kurihara, Masashi Higasa, Katsushige Yamada
  • Patent number: 10815501
    Abstract: A sugar liquid or solid sugar is derived from cellulose-containing biomass or blackstrap molasses, wherein content of one or more free amino acids selected from the group consisting of serine, threonine, asparagine, aspartic acid, glutamine, glutamic acid, proline, phenyl alanine, lysine, and histidine, which are impurities, is below the limit of detection.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: October 27, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Hiroyuki Kurihara, Hiroko Ishizuka, Katsushige Yamada
  • Patent number: 10781466
    Abstract: A method of producing a sugar liquid includes: (A) reacting mannanase with a liquid component obtained by hydrolysis treatment of woody biomass to obtain a saccharified liquid; and (B) filtering the saccharified liquid in Step (A) through a microfiltration membrane and/or ultrafiltration membrane to collect a sugar liquid from a permeate side.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: September 22, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Atsushi Minamino, Yuka Asahi, Hiroyuki Kurihara, Jumpei Kishimoto, Masashi Higasa, Katsushige Yamada
  • Publication number: 20200283682
    Abstract: An anti-caking agent for soil includes, as effective ingredients: a lignin having a molecular weight peak, as measured by GPC molecular weight analysis using a UV detector at a wavelength of 254 nm, within the molecular weight range of 10,000 to 40,000; and a diatomaceous earth. A method of improving the growth of a plant uses the above described anti-caking agent for soil. The anti-caking agent for soil has the effect of reducing the caking of soil and improving the poor growth of a plant.
    Type: Application
    Filed: September 25, 2018
    Publication date: September 10, 2020
    Inventors: Shigeyuki Funada, Takahiro Arai, Hiroyuki Kurihara, Katsushige Yamada
  • Publication number: 20200247835
    Abstract: A method of producing lignin includes obtaining an alkali-treated product by an alkali treatment in which a lignin-containing biomass is brought into contact with an alkaline aqueous solution; and keeping a temperature of the alkali-treated product at 35° C. or higher, and adjusting a pH of the alkali-treated product to pH 7 or lower to precipitate lignin, and recovering the lignin.
    Type: Application
    Filed: July 30, 2018
    Publication date: August 6, 2020
    Inventors: Takahiro Arai, Hiroyuki Kurihara, Shigeyuki Funada, Katsushige Yamada
  • Publication number: 20200216869
    Abstract: A method produces xylo-oligosaccharides from a biomass containing xylan and cellulose, which method is convenient and has a high yield of xylo-oligosaccharides because of inhibition of degradation of xylo-oligosaccharides into xylose. In the method of producing xylo-oligosaccharides, a biomass containing xylan and cellulose is hydrolyzed with a cellulase composition having at least activities of xylanase, cellobiohydrolase and ?-glucosidase and substantially free of ?-xylosidase activity during hydrolysis.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 9, 2020
    Inventors: Takuya Kasahara, Chiaki Yamada, Hiroyuki Kurihara, Katsushige Yamada
  • Patent number: 10563238
    Abstract: A method of producing a sugar liquid includes steps (1) providing a pretreatment product of a first cellulose-containing biomass; (2) adding a second cellulose-containing biomass or a pretreatment product thereof in an amount ranging from 1 to 50% based on the solid content weight of the first cellulose-containing biomass pretreatment product of step (1), and carrying out hydrolysis by a filamentous fungus-derived cellulase; and (3) subjecting a hydrolysate of step (2) to solid-liquid separation to obtain a solution component and a hydrolysis residue, and filtering the solution component through an ultrafiltration membrane to recover the filamentous fungus-derived cellulase as a retentate and recover a sugar liquid as a permeate.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: February 18, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Chiaki Yamada, Hiroyuki Kurihara, Katsushige Yamada
  • Publication number: 20200002695
    Abstract: A xylanase variant includes an amino acid sequence derived from an amino acid sequence of a xylanase from a filamentous fungus wherein one or more amino acid residues at the positions selected from the positions corresponding to position 78, position 80, position 117, position 155, position 169, and position 203 in the amino acid sequence of SEQ ID NO: 1 are substituted, the xylanase variant having a xylanase activity.
    Type: Application
    Filed: February 23, 2018
    Publication date: January 2, 2020
    Inventors: Natsuko Murakami, Koji Kobayashi, Hiroyuki Kurihara, Katsushige Yamada, Masahiro Watanabe, Keiko Uechi, Tamotsu Hoshino
  • Patent number: 10519093
    Abstract: A method efficiently produces hydroxycinnamic acids having a high quality, from a cellulose-containing biomass. More specifically, the method includes the steps of: obtaining an alkaline filtrate by allowing an alkaline aqueous medium to pass through a cellulose-containing biomass; obtaining a hydroxycinnamic acid extraction liquid by allowing the alkaline filtrate to repeatedly pass through the cellulose-containing biomass; and separating the hydroxycinnamic acid from the hydroxycinnamic acid extraction liquid.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: December 31, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Atsushi Minamino, Shigeyuki Funada, Hiroyuki Kurihara, Yuka Asahi, Takuya Kasahara, Katsushige Yamada
  • Patent number: 10519476
    Abstract: A method of producing a sugar liquid from cellulose-containing biomass includes (1) to (3): (1): subjecting a cellulose-containing biomass to hydrothermal treatment and thereafter separating the treated cellulose-containing biomass into a hydrothermally-treated liquid and a cellulose-containing solid content; (2): adding a filamentous fungus-derived cellulase to the cellulose-containing solid content obtained in (1) to hydrolyze the cellulose and thereafter separating the hydrolysate into a saccharification residue and a sugar liquid; and (3): washing the saccharification residue obtained in (2) with the hydrothermally-treated liquid obtained in (1) to elute the filamentous fungus-derived cellulase adsorbed to the saccharification residue into the hydrothermally-treated liquid and thereafter obtaining a solution component comprising the filamentous fungus-derived cellulase by solid-liquid separation.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: December 31, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Hiroyuki Kurihara, Hiroko Ishizuka, Atsushi Minamino, Katsushige Yamada
  • Patent number: 10487066
    Abstract: In the present invention, a sugar alcohol can be efficiently produced from a cellulose-containing biomass by carrying out a step (1) of filtering an aqueous sugar solution, which is obtained by hydrolysis of a cellulose-containing biomass, by passing the solution through a separation membrane having a molecular cut-off of 300-800 so as to remove catalyst poisons to the non-permeate side and collecting a sugar solution from the permeate side, and a step (2) of subjecting the sugar solution obtained in step (1) to a hydrogenation reaction in the presence of a metal catalyst.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: November 26, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Takahiro Arai, Masateru Ito, Hiroyuki Kurihara, Katsushige Yamada
  • Patent number: 10435728
    Abstract: An endoxylanase mutant has improved thermal stability. The endoxylanase mutant having endoxylanase activity includes an amino acid sequence at least including substitution of an amino acid residue at one or more positions selected from positions corresponding to position 35, position 44, position 62, position 63, position 101, and position 102 of an amino acid sequence of SEQ ID NO: 1 in an amino acid sequence of endoxylanase derived from a filamentous fungus.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: October 8, 2019
    Assignees: Toray Industries, Inc., National Institute of Advanced Industrial Science and Technology
    Inventors: Hiroyuki Kurihara, Takuya Kasahara, Chiaki Yamada, Natsuko Murakami, Katsushige Yamada, Kazuhiko Ishikawa, Masahiro Watanabe