Patents Assigned to Nitto Boseki Co. Ltd.
  • Patent number: 11372001
    Abstract: Provided are: a monoclonal antibody against human IgG4, for which the epitope is present in the CH3 of human IgG4 given by SEQ ID NO: 4; a hybridoma that produces the monoclonal antibody; a method for detecting IgG4 using the monoclonal antibody; and a kit used in this method.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: June 28, 2022
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Yuya Teruuchi, Yuri Matsuki, Kazumitsu Inagaki, Daisuke Sasaki, Haruka Kashiwagura
  • Patent number: 11149363
    Abstract: A glass cloth includes warp yarns and weft yarns formed by bundling in the range of 14 to 55 glass filaments having a diameter in the range of 3.0 to 4.2 ?m, and has a weaving density of the warp yarns and the weft yarns of 86 to 140 yarns/25 mm, a thickness of 7.5 to 12.0 ?m, a mass of 6.0 to 10.0 g per m2, and an average number of stages of 2.00 or more and less than 3.00, an average degree of opening, which is indicated as the geometric mean of the degree of opening of the warp yarns and the degree of opening of the weft yarns, in the range of 1.000 to 1.300, and a yarn width ratio, as the ratio of the yarn width of the warp yarns to that of the weft yarns, in the range of 0.720 to 0.960.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: October 19, 2021
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Hirotaka Ikejiri, Teiji Endo, Masahiro Awano, Ryosuke Osada
  • Patent number: 11091596
    Abstract: Provided is a glass fiber-reinforced resin molded article having well-balanced and excellent static and dynamic strength and fluidity. In the glass fiber-reinforced resin molded article, glass fiber included in the glass fiber-reinforced resin molded article includes a flat cross-sectional shape having a minor axis D1 in the range of 3.0 to 10.5 ?m and a major axis D2 in the range of 11.0 to 29.0 ?m, the number average fiber length L (?m) of the glass fiber included in the glass fiber-reinforced resin molded article is in the range of 150 to 475 ?m, the glass fiber content C (wt %) in the glass fiber-reinforced resin molded article is in the range of 40.0 to 75.0 wt %, and the above DI, D2, L, and C satisfy the following formula (1): 260.0<C2×L/(D1×D22)<400.0??(1).
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: August 17, 2021
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Yosuke Nukui, Kimihiro Takatsu
  • Patent number: 11059946
    Abstract: Provided is a glass fiber-reinforced resin molded article having high tensile strength and high impact strength in combination with a low dielectric constant and a low dissipation factor. The glass fiber-reinforced resin molded article contains: 10 to 90 mass % of a glass fiber; and 90 to 10 mass % of a resin based on the total amount of the glass fiber-reinforced resin molded article, wherein the glass fiber has composition containing: 52.0 to 57.0 mass % of SiO2; 13.0 to 17.0 mass % of Al2O3; 15.0 to 21.5 mass % of B2O3; 2.0 to 6.0 mass % of MgO; 2.0 to 6.0 mass % of CaO; 1.0 to 4.0 mass % of TiO2; and less than 1.5 mass % of F2, and the total amount of Li2O, Na2O, and K2O is less than 0.6 mass %, based on the total amount of the glass fiber, and the glass fiber has a number-average fiber length of 30 to 5000 ?m.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: July 13, 2021
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Akane Tsuchigane, Yuya Onodera, Yuta Takahashi, Tadashi Kurita, Tsunefumi Aizawa
  • Patent number: 11040908
    Abstract: Provided is a method for producing glass fiber, capable of stably performing the spinning of glass fibers without mixing of red crystals in glass fibers. When glass fibers are formed by discharging, from a nozzle tip, a molten glass obtained by melting glass raw materials mixed so as to give a glass composition including, when melted, in relation to the total amount thereof, SiO2 in a range from 57.0 to 62.0% by mass, Al2O3 in a range from 15.0 to 20.0% by mass, MgO in a range from 7.5 to 12.0% by mass, and CaO in a range from 9.0 to 16.5% by mass, and having a total content of SiO2, Al2O3, MgO and CaO of 98.0% by mass or more, the glass composition includes B2O3, Li2O, or B2O3 and Li2O as an additive or additives capable of suppressing the generation of red crystals.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: June 22, 2021
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Takashi Nonaka, Norio Hirayama, Kazuaki Minami, Yosuke Nukui
  • Publication number: 20210140973
    Abstract: Provided are: a monoclonal antibody against human IgG4, for which the epitope is present in the CH3 of human IgG4 given by SEQ ID NO: 4; a hybridoma that produces the monoclonal antibody; a method for detecting IgG4 using the monoclonal antibody; and a kit used in this method.
    Type: Application
    Filed: July 5, 2018
    Publication date: May 13, 2021
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Yuya TERUUCHI, Yuri MATSUKI, Kazumitsu INAGAKI, Daisuke SASAKI, Haruka KASHIWAGURA
  • Patent number: 10995359
    Abstract: The present invention addresses the problem of providing a novel method for classifying cancer cells by an analysis method in which measurement of the activity of two types of protein kinase is used. Cancer cells are newly classified and drug sensitivity is predicted on the basis of the ratio of the activity of two types of protein kinase derived from the same sample.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: May 4, 2021
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Masayuki Wakabayashi, Natsuki Sato, Hideki Ishihara
  • Patent number: 10988577
    Abstract: Provided are a copolymer of diallylamines and sulfur dioxide having a high molecular weight and a low content amount of impurities such as halogens, and a production method with which it is possible to produce such a copolymer relatively simply and at low cost. This problem is solved by: a copolymer having a weight-average molecular weight of 150,000 or higher obtained by GPC measurement and a degree of polymerization of 1000 or higher, the copolymer being obtained by copolymerizing sulfur dioxide and a sulfonate or alkyl sulfate salt of diallylamines having a specific structure; and a method for producing a copolymer, the method having a step for copolymerizing sulfur dioxide and a sulfonate or alkyl sulfate salt of diallylamines having a specific structure in ethylene glycol or in propylene glycol monomethyl ether.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: April 27, 2021
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Nobuyuki Yamada, Masaru Bunya
  • Patent number: 10934640
    Abstract: Provided is a glass cloth enabling to reduce a mass of the glass cloth, being manufactured efficiently, suppressing generation of pinholes in a prepreg including the glass cloth, and maintaining excellent appearance. The glass cloth is composed of warps and wefts obtained by bundling 30 to 44 glass filaments having a diameter in the range of 3.0 to 4.0 ?m, the weave densities of the warp and the weft being in the range of 100 to 125 yarns/25 mm; the glass cloth has a thickness in the range of 6.5 to 11.0 ?m; the glass yarn coverage C is 85.5 to 99.5%; and the glass yarn coverage C, the average value F of the number of glass filaments constituting the warp and the weft, and the average value D of the weave densities of the warp and the weft satisfy the following expression (1): 53.0?C×F1/2/D1/2?57.3??(1).
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: March 2, 2021
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Hirotaka Ikejiri, Masahiro Awano, Teiji Endo, Hiromitsu Miyagi
  • Patent number: 10900146
    Abstract: The glass-fiber-yarn joined body 1 is provided with glass fiber yarns 2, 3, and a connection 5 in which a resin yarn 4 is wound around ends of both of the glass fiber yarns 2, 3, the ends being superimposed with each other. The connection 5 has a width W1 of 20 to 40 mm. When a connection diameter R as a total of diameters of the respective glass fiber yarns 2, 3 and the thickness of the resin yarn 4 wound around the connection 5 is 500 to 5000 ?m and a mass of each of the glass fiber yarns 2, 3 is 200 to 6000 tex, a value of a ratio of mass of each of the glass fiber yarns 2, 3 relative to the connection diameter R is in the range of 0.32 to 2.00.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: January 26, 2021
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Yosuke Nukui, Hiroyasu Aihara, Yoshinari Kasai
  • Publication number: 20200408770
    Abstract: Provided are a pretreatment method for detecting the number of cells containing Ki-67 protein-positive nuclei using Ki-67 antibody; a method for the detection; a kit to be used in the detection method; and determination of a therapy regimen using the aforesaid method. Attempts were made to activate Ki-67 antigen with the use of an enzyme having been considered as inappropriate for the activation thereof. By pretreating a sample with an enzyme not recognizing the epitope of MIB-1 (a rare cutter enzyme), the antigen activation of Ki-67 antigen was enhanced, while enhancing the antigenicity of other antigens including a cytokeratin too. As a result, a method for more objectively and more universally quantifying Ki-67-positive cells at higher reproducibility, said method comprising isolating cell nuclei from an FFPE section while enhancing the antigenicity and performing a reaction between Ki-67 protein, i.e., the target, existing in the cell nuclei with a fluorescently labeled antibody, has been completed.
    Type: Application
    Filed: February 28, 2019
    Publication date: December 31, 2020
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Natsuki SATO, Mika KUROIWA, Masatoshi NAKATSUJI, Hideki ISHIHARA
  • Patent number: 10724071
    Abstract: The present invention addresses the problem of providing a novel method for classifying cancer cells by an analysis method in which measurement of the activity of two types of protein kinase is used. Cancer cells are newly classified and drug sensitivity is predicted on the basis of the ratio of the activity of two types of protein kinase derived from the same sample.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: July 28, 2020
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Masayuki Wakabayashi, Natsuki Sato, Hideki Ishihara
  • Publication number: 20200199015
    Abstract: Provided is a glass composition for glass fiber having a low dielectric constant and a low dielectric loss tangent, suppressing occurrence of phase separation, and reducing viscosity at high temperatures. The glass composition for glass fiber includes: SiO2 in the range of 52.0 to 59.5% by mass; B2O3 in the range of 17.5 to 25.5% by mass; Al2O3 in the range of 9.0 to 14.0% by mass; SrO in the range of 0.5 to 6.0% by mass; MgO in the range of 1.0 to 5.0% by mass; and CaO in the range of 1.0 to 5.0% by mass, and includes F2 and Cl2 in the range of 0.1 to 2.5% by mass in total, with respect to the total amount.
    Type: Application
    Filed: July 20, 2018
    Publication date: June 25, 2020
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Takanobu HOSOKAWA, Hiroyuki YABE, Tadashi KURITA, Takashi NONAKA
  • Patent number: 10670586
    Abstract: Disclosed is a test instrument for measuring an analyte in a liquid sample by a noble metal colloid aggregation measurement method. The test instrument involves a reaction chamber in which at least the liquid sample is to be reacted with a reagent, wherein the reagent is adhered on at least a part of a surface constituting the reaction chamber in a dried state, and the reagent enables the measurement of the analyte by a noble metal colloid aggregation measurement method.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: June 2, 2020
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Ryo Kojima, Kenta Noda, Yoshiro Sato, Natsuki Sato, Kaduho Ashizawa
  • Publication number: 20200123284
    Abstract: Even when used in applications such as electronic materials, display materials, and inks, in which required standards in terms of coloring prevention, long term stability, low impurity content, and the like, are extremely high, the present invention can meet such required standards. The present invention addresses the problem of providing an allylamine (co)polymer which overcomes the limitations of the prior art, undergoes little coloring, contains little impurities and exhibits excellent long term stability; and a method for producing the same. This problem can be solved by an allylamine (co)polymer which has constituent units derived from allylamine and contains sulfuric acid groups in the structure thereof, in which the proportion of the sulfuric acid groups with respect to the total mass of the allylamine (co)polymer is 20,000 ppm by mass or less.
    Type: Application
    Filed: June 19, 2018
    Publication date: April 23, 2020
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Nobuyuki YAMADA, Masaru BUNYA
  • Publication number: 20200102431
    Abstract: Provided is a glass fiber-reinforced resin molded article having excellent mechanical strength, heat resistance, long-term durability, and molding processability. This glass fiber-reinforced resin molded article is characterized in that glass fibers contained in the glass fiber-reinforced resin molded article have a fiber diameter D (?m) in a range from 3.0 to 12.0 ?m; the glass fibers contained in the glass fiber-reinforced resin molded article have a number-average fiber length L (?m) in a range from 160 to 350 ?m; the glass fiber-reinforced resin molded article has a glass fiber volume fraction V (%) in a range from 3.0 to 50.0%; and D, L, and V satisfy formula (1): 300.0?D2×L/V?1000.0??(1).
    Type: Application
    Filed: June 11, 2018
    Publication date: April 2, 2020
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Yosuke NUKUI, Hironobu SEKIKAWA, Akane TSUCHIGANE
  • Publication number: 20190367683
    Abstract: Provided are a copolymer of diallylamines and sulfur dioxide having a high molecular weight and a low content amount of impurities such as halogens, and a production method with which it is possible to produce such a copolymer relatively simply and at low cost. This problem is solved by: a copolymer having a weight-average molecular weight of 150,000 or higher obtained by GPC measurement and a degree of polymerization of 1000 or higher, the copolymer being obtained by copolymerizing sulfur dioxide and a sulfonate or alkyl sulfate salt of diallylamines having a specific structure; and a method for producing a copolymer, the method having a step for copolymerizing sulfur dioxide and a sulfonate or alkyl sulfate salt of diallylamines having a specific structure in ethylene glycol or in propylene glycol monomethyl ether.
    Type: Application
    Filed: August 14, 2019
    Publication date: December 5, 2019
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Nobuyuki YAMADA, Masaru BUNYA
  • Patent number: 10442895
    Abstract: Provided are a copolymer of diallylamines and sulfur dioxide having a high molecular weight and a low content amount of impurities such as halogens, and a production method with which it is possible to produce such a copolymer relatively simply and at low cost. This problem is solved by: a copolymer having a weight-average molecular weight of 150,000 or higher obtained by GPC measurement and a degree of polymerization of 1000 or higher, the copolymer being obtained by copolymerizing sulfur dioxide and a sulfonate or alkyl sulfate salt of diallylamines having a specific structure; and a method for producing a copolymer, the method having a step for copolymerizing sulfur dioxide and a sulfonate or alkyl sulfate salt of diallylamines having a specific structure in ethylene glycol or in propylene glycol monomethyl ether.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: October 15, 2019
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Nobuyuki Yamada, Masaru Bunya
  • Patent number: 10252258
    Abstract: The purpose of the present invention is to provide a method for separating and concentrating a target substance as an alternative to existing cationic polymers, and a kit for implementing this method.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 9, 2019
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Kazuho Ashizawa, Kenta Noda, Koji Watanabe, Yoko Teruuchi, Masaru Bunya
  • Patent number: 10214592
    Abstract: The purpose of the present invention is to provide a monoclonal antibody that is useful in specifically assaying tartrate resistant acid phosphatase 5b (TRACP-5b). A hybridoma producing a monoclonal antibody against TRACP-5b, said monoclonal antibody showing higher reactivity with TRACP-5b than with tartrate resistant acid phosphatase 5a (TRACP-5a) and, therefore, being specific to TRACP-5b, is obtained by cell fusion using, as an antigen, human recombinant TRACP-5b purified from silkworm silk gland. By using this monoclonal antibody, TRACP-5b in a specimen can be highly sensitively and specifically detected.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: February 26, 2019
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Wataru Kikuchi, Kumiko Sasagawa, Kenta Noda