Patents by Inventor Kentaro Sano

Kentaro Sano 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).

  • Publication number: 20220086096
    Abstract: A first node and a second node transmit packets to a third node via a switch. The packets are buffered in a Tx buffer in the switch and then transmitted to the third node. When the third node detects a sign of congestion at the Tx buffer based on the reception frequency of the packets, it is recognized, from transmitter addresses included in the received packets, that the nodes transmitting the packets to the third node are the first node and the second node, and a control packet for a transmission stop request is transmitted to the first node and the second node. On receiving the control packet for a transmission stop request, the first node stops transmission of only packets addressed to the third node. On receiving the control packet for a transmission stop request, the second node stops transmission of only packets addressed to the third node.
    Type: Application
    Filed: September 7, 2021
    Publication date: March 17, 2022
    Applicants: FUJITSU LIMITED, RIKEN
    Inventors: Junichi Sugiyama, Katsuya Tsushita, Kentaro Sano, Tomohiro Ueno
  • Patent number: 11221552
    Abstract: A light source device comprises: an excitation light source configured to generate excitation light; a wavelength conversion member including a base and a phosphor layer which is provided on the base and configured to convert the excitation light into fluorescence; and a converging optical system including a converging lens for converging the excitation light on the phosphor layer, wherein the light source device further comprises a housing for accommodating the wavelength conversion member, the excitation light source is provided outside the housing, a wall surface of the housing includes a lens hole into which the converging lens is inserted, and the converging lens which is inserted into the lens hole and the wall surface of the housing isolate an internal space of the housing from an outer space of the housing.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: January 11, 2022
    Assignee: MAXELL, LTD.
    Inventors: Masatoshi Arai, Hiroshi Shiina, Kentaro Sano
  • Publication number: 20210371613
    Abstract: A prepreg having excellent tackiness as well as excellent resin strength after curing and strength in the non-fiber direction is described; and a fiber-reinforced composite material using the prepreg, where the prepreg is composed of reinforcing fibers and a resin composition which includes [A] an epoxy resin, [B] a dicyanamide and [C] a compound having a melting point of 130° C. or lower and a solubility parameter whose difference from the solubility parameter of [B] is 8 or less.
    Type: Application
    Filed: February 27, 2019
    Publication date: December 2, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Koji Furukawa, Junko Kawasaki, Soichi Yoshizaki, Kentaro Sano, Toshiya Kamae
  • Patent number: 11186674
    Abstract: Provided is a fiber-reinforced composite material exhibiting high heat resistance and excellent appearance quality. is the composite material is based on an epoxy resin composition which contains constituents [A], [B], and [C] and satisfies conditions (i) and (ii): [A] a tri- or higher functional epoxy resin; [B] an aromatic amine; [C] an imidazole compound; 0.20?b/a?0.60; and??(i) 0.002?c/a?0.014;??(ii) wherein a (mol) denotes the number of epoxy groups in 100 g of the epoxy resin composition, b (mol) denotes the number of active hydrogens contained in the constituent [B], and c (mol) denotes the number of imidazole rings contained in the constituent [C]).
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: November 30, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kentaro Sano, Taiki Kuroda, Ayumi Mori, Toshiya Kamae
  • Patent number: 11130857
    Abstract: The present invention provides an epoxy resin composition that serves to produce a cured epoxy resin that simultaneously realizes a high heat resistance, a high elastic modulus, and a low color and to produce a molded article having a good appearance without suffering the formation of white spots on the surface thereof when used as matrix resin in a fiber reinforced composite material. The epoxy resin composition includes an epoxy resin as component [A], an aromatic urea [B1] and/or an imidazole compound [B2] as component [B], and a borate ester compound as component [C], containing dicyandiamide in the amount of 0.5 part by mass or less relative to the total quantity of epoxy resins which accounts for 100 parts by mass, wherein the epoxy resin composition meets certain sets of further requirements with respect to its composition.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: September 28, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kentaro Sano, Taiki Kuroda, Reo Takaiwa, Noriyuki Hirano
  • Publication number: 20210230384
    Abstract: The present invention addresses the problem of providing: a towpreg that has superior bobbin unspoolability and process pass-through properties, and is capable of yielding a fiber-reinforced composite having extremely high 0° tensile strength utilization; and a pressure vessel using such a towpreg. The means for solving this problem is a towpreg obtained by impregnating a reinforcing fiber tow with an epoxy resin composition containing [A]-[D], wherein: the epoxy resin composition contains 10-90 parts by mass of [A] and 10-50 parts by mass of [B] per 100 parts by mass of the epoxy resin component; the epoxy resin composition has a 25° C. viscosity (?25) of 1-40 Pa·s and a 40° C. viscosity (?40) of 0.2-5 Pa·s; and the cured epoxy resin composition has a glass transition temperature (Tg) of 95° C. or higher.
    Type: Application
    Filed: May 15, 2019
    Publication date: July 29, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Masahiro Tsuzuki, Kentaro Sano, Toshiya Kamae
  • Publication number: 20210189078
    Abstract: Disclosed is a prepreg comprising an epoxy resin composition containing [A] an epoxy resin and [B] a curing agent, and a reinforcing fiber, wherein the epoxy resin composition satisfies: (a) [A1] an epoxy resin represented by the general formula (I) is contained as the epoxy resin [A], and [A1?] an epoxy resin satisfying: n?2 among the component [A1]; wherein, R1, R2 and R3 each independently represent a hydrogen atom or a methyl group, and n represents an integer of 1 or more; (b) the entire epoxy resin has an average epoxy equivalent of 165 to 265 g/eq; (c) a water absorption coefficient at 85° C. and 95% RH for 2 hours is 3.0% by mass or less based on 100% by mass of the epoxy resin composition; (d) [B1] an aromatic urea as [B] a curing agent; and (e) the content of [B2] dicyandiamide is 0.5 part by mass or less based on 100 parts by mass of the entire epoxy resin.
    Type: Application
    Filed: November 27, 2018
    Publication date: June 24, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Kentaro Sano, Taiki Kuroda, Hiroyuki Uchida, Toshiya Kamae
  • Patent number: 11008419
    Abstract: The present invention provides an epoxy resin composition that serves to produce a cured epoxy resin that simultaneously realizes a high heat resistance, a high elastic modulus, and a low color and to produce a molded article having a good appearance without suffering the formation of white spots on the surface thereof when used as matrix resin in a fiber reinforced composite material. The epoxy resin composition includes an epoxy resin as component [A] and an imidazole compound as component [B] and meets certain conditions (a) to (d).
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 18, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kentaro Sano, Taiki Kuroda, Reo Takaiwa, Noriyuki Hirano
  • Publication number: 20200371415
    Abstract: A light source device comprises: an excitation light source configured to generate excitation light; a wavelength conversion member including a base and a phosphor layer which is provided on the base and configured to convert the excitation light into fluorescence; and a converging optical system including a converging lens for converging the excitation light on the phosphor layer, wherein the light source device further comprises a housing for accommodating the wavelength conversion member, the excitation light source is provided outside the housing, a wall surface of the housing includes a lens hole into which the converging lens is inserted, and the converging lens which is inserted into the lens hole and the wall surface of the housing isolate an internal space of the housing from an outer space of the housing.
    Type: Application
    Filed: November 12, 2018
    Publication date: November 26, 2020
    Inventors: Masatoshi ARAI, Hiroshi SHIINA, Kentaro SANO
  • Patent number: 10829603
    Abstract: There is provided a cured product of an epoxy resin composition, in which the compounding composition and the phase-separated structure of the epoxy resin composition are controlled so that the balance between rigidity and toughness of the cured product is superior compared with those of cured products of conventional epoxy resin compositions. A cured product of an epoxy resin composition, which has both superior rigidity and superior toughness compared with conventional materials can be produced by curing an epoxy resin composition comprising an epoxy resin, a polyrotaxane having graft-chain-modified cyclic molecules and a curing agent for the epoxy resin.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: November 10, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Keiichiro Nomura, Nobuhiro Morioka, Kentaro Sano, Noriyuki Hirano, Sadayuki Kobayashi
  • Publication number: 20200241401
    Abstract: A projection video display apparatus capable of, even when an air inlet of a certain duct among a plurality of ducts is blocked, securing a cooling air path to the duct whose air inlet is blocked is provided. A projection video display apparatus 100 according to one embodiment includes a heat generating member that generates heat such as an optical system component or an electronic component, a plurality of cooling fans 121 to 127 configured to cool heat from the heat generating member, and a plurality of ducts 201 to 203 to be cooling air paths each having at least one of the plurality of cooling fans 121 to 127 stored therein, at least two of the ducts being adjacent to each other. Also, the ducts adjacent to each other have openings 221 to 223 in wall surfaces between the adjacent ducts.
    Type: Application
    Filed: April 27, 2017
    Publication date: July 30, 2020
    Inventors: Kentaro SANO, Takeshi KATAYAMA
  • Publication number: 20200165378
    Abstract: Provided is a fiber-reinforced composite material exhibiting high heat resistance and excellent appearance quality. is the composite material is based on an epoxy resin composition which contains constituents [A], [B], and [C] and satisfies conditions (i) and (ii): [A] a tri- or higher functional epoxy resin; [B] an aromatic amine; [C] an imidazole compound; 0.20?b/a?0.60; and??(i) 0.002?c/a?0.014;??(ii) wherein a (mol) denotes the number of epoxy groups in 100 g of the epoxy resin composition, b (mol) denotes the number of active hydrogens contained in the constituent [B], and c (mol) denotes the number of imidazole rings contained in the constituent [C]).
    Type: Application
    Filed: April 5, 2018
    Publication date: May 28, 2020
    Applicant: Toray Industries, Inc.
    Inventors: Kentaro Sano, Taiki Kuroda, Ayumi Mori, Toshiya Kamae
  • Publication number: 20200109899
    Abstract: A heat transport device 1 includes a housing 2 with a hollow structure, working fluid 3 sealed in a sealed space of the housing 2, and a porous structure member 4 having a capillary structure disposed in the sealed space, and the housing 2 is configured to be rotatable around a rotation axis P by a motor as a drive source. The housing 2 includes an evaporation part S1 for vaporizing the working fluid 3 by heat from a heating element 5 and a condensation part S2 for condensing vapor to restore it to the working fluid 3, and the evaporation part S1 is provided on an outer side in the radial direction than the condensation part S2 with respect to the rotation axis P.
    Type: Application
    Filed: May 22, 2018
    Publication date: April 9, 2020
    Inventors: Kentaro SANO, Masatoshi ARAI, Yusuke MATSUMOTO, Hiroshi SHIINA
  • Publication number: 20200079917
    Abstract: Provided is a method for producing a fiber-reinforced composite material exhibiting high heat resistance and excellent appearance quality. It is a method for producing a fiber-reinforced composite material, which includes disposing a prepreg containing a reinforced fiber being impregnated with an epoxy resin composition in a mold, pressurizing and heating the prepreg at 0.2 to 2.5 MPa and 130° C. to 200° C. as primary curing, and then further heating the prepreg at 210° C. to 270° C. for 10 minutes or more as secondary curing.
    Type: Application
    Filed: April 5, 2018
    Publication date: March 12, 2020
    Applicant: Toray Industries, Inc.
    Inventors: Kentaro Sano, Ayumi Mori, Taiki Kuroda, Toshiya Kamae
  • Patent number: 10472498
    Abstract: A molded article includes 10 to 40% by mass of reinforcing fibers (A); and 60 to 90% by mass of a matrix resin (B) mainly including a polyarylene sulfide, the molded article satisfying conditions (I) to (IV) and having a tensile strength of 240 MPa or more in a main orientation direction of the reinforcing fibers (A) in the molded article: (I) strand tensile strength of the reinforcing fibers (A) is 1.5 to 5.5 OPa; (II) number average fiber length of the reinforcing fibers (A) in the molded article is 0.4 mm or more and less than 0.6 mm; (III) tensile elongation of the matrix resin (B) is 1.5 to 10%; and (IV) interfacial shear strength between the reinforcing fibers (A) and the matrix resin (B) is 20 MPa or more.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: November 12, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Naokichi Imai, Kentaro Sano, Keisuke Inose
  • Publication number: 20190211201
    Abstract: The present invention provides an epoxy resin composition that serves to produce a cured epoxy resin that simultaneously realizes a high heat resistance, a high elastic modulus, and a low color and to produce a molded article having a good appearance without suffering the formation of white spots on the surface thereof when used as matrix resin in a fiber reinforced composite material. The epoxy resin composition includes an epoxy resin as component [A], an aromatic urea [B1] and/or an imidazole compound [B2] as component [B], and a borate ester compound as component [C], containing dicyandiamide in the amount of 0.5 part by mass or less relative to the total quantity of epoxy resins which accounts for 100 parts by mass, wherein the epoxy resin composition meets certain sets of further requirements with respect to its composition.
    Type: Application
    Filed: June 23, 2017
    Publication date: July 11, 2019
    Applicant: Toray Industries, Inc.
    Inventors: Kentaro Sano, Taiki Kuroda, Reo Takaiwa, Noriyuki Hirano
  • Patent number: 10344117
    Abstract: An epoxy resin composition includes [A] an epoxy resin, [B] dicyandiamide, [C] an aromatic urea and [D] a boric acid ester and satisfies any one of (i) requirements [a] and [b], (ii) requirements [c] and [d] and (iii) requirements [c] and [e]:[a]: the time from when the temperature reaches 100° C. till when the heat flow reaches a peak top is 60 minutes or shorter as determined by a differential scanning calorimetry; [b]: the time from when the temperature reaches 60° C.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: July 9, 2019
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kentaro Sano, Reo Takaiwa, Noriyuki Hirano
  • Publication number: 20190177470
    Abstract: The present invention provides an epoxy resin composition that serves to produce a cured epoxy resin that simultaneously realizes a high heat resistance, a high elastic modulus, and a low color and to produce a molded article having a good appearance without suffering the formation of white spots on the surface thereof when used as matrix resin in a fiber reinforced composite material.
    Type: Application
    Filed: June 23, 2017
    Publication date: June 13, 2019
    Applicant: Toray Industries, Inc.
    Inventors: Kentaro Sano, Taiki Kuroda, Reo Takaiwa, Noriyuki Hirano
  • Patent number: 10316159
    Abstract: An epoxy resin composition includes: an [A] epoxy resin at least comprising an [A1] isocyanurate epoxy resin and an [A2] glycidyl amine epoxy resin; [B] dicyandiamide; and [C] diaminodiphenyl sulfone, wherein (1) an average epoxy equivalent of the [A] epoxy resin is 115 g/eq to 150 g/eq, and (2) an amount of the component [C] added is an amount of 0.05 equivalent to 0.3 equivalent relative to epoxy groups in the [A] epoxy resin in terms of active hydrogen groups.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: June 11, 2019
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Reo Takaiwa, Junko Kawasaki, Kentaro Sano, Noriyuki Hirano
  • Patent number: 10308775
    Abstract: A fiber-reinforced resin composition includes a polyarylene sulfide (A), a carbodiimide compound (B) and carbon fibers (C) in specific blending amounts and in which the carbon fibers (C) are surface-treated with a sizing agent (D), the carbodiimide compound (B) is an aliphatic carbodiimide compound, and the sizing agent (D) is a compound having three or more specific functional groups in one molecule; and a fiber-reinforced composite material includes a thermoplastic resin (A?), an adhesive compound (B?) and reinforcing fibers (C?) and in which the adhesive compound (B?) is a compound having two or more specific structures in one molecule, the thermoplastic resin (A?) is a thermoplastic resin containing an element other than carbon in a repeating unit structure of a main chain, and an abundance ratio Rb of the adhesive compound (B?) is 1.2 or more.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: June 4, 2019
    Assignee: Toray Industries Inc.
    Inventors: Naokichi Imai, Keisuke Inose, Kentaro Sano, Atsuki Tsuchiya