Patents by Inventor Naoya Kitamura

Naoya Kitamura 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: 20240083885
    Abstract: This invention is in the field of medicinal chemistry and relates to a new class of small-molecules having a methyl-acetamido-propanamide structure (e.g., Formula I) which function as inhibitors of the SARS-CoV-2 main protease (Mpro), which function as therapeutics for the treatment of viral infection characterized with Mpro protease activity and/or expression (e.g., COVID-19), and which function as therapeutics for the treatment of other conditions characterized with Mpro protease activity and/or expression.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 14, 2024
    Inventors: Jun Wang, Naoya Kitamura, Chunlong Ma
  • Publication number: 20230415514
    Abstract: Provided is a tire having a tread portion with a thickness of 15 mm or less, wherein the cap rubber layer forming the tread portion is formed from a rubber composition containing 40 parts by mass or more and 80 parts by mass or less of styrene-butadiene rubber (SBR) with a styrene content of 25% by mass or less, in 100 parts by mass of the rubber component, and in addition to the rubber component, containing silica and carbon black; and having loss tangent 30° C. tan ? of more than 0.18 measured under the conditions of temperature of 30° C., frequency of 10 Hz, initial strain of 5%, dynamic strain rate of 1%, and deformation mode: tensile; wherein the carbon black content is 15 parts by mass or more with respect to 100 parts by mass of the rubber component, and the ratio of the silica content to the carbon black content is 1 or more; and an object of the present invention is to improve chipping resistance performance when running on a rough road surface at high speed.
    Type: Application
    Filed: June 20, 2023
    Publication date: December 28, 2023
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Naoya KITAMURA
  • Publication number: 20230416508
    Abstract: A tire having a tread portion, which can suppress deterioration in braking performance of tires on an icy road surface after repeated running; and the cap rubber layer forming the tread portion is formed from a rubber composition containing 40 parts by mass or more and 80 parts by mass or less of styrene-butadiene rubber (SBR) having a styrene content of 25% by mass or less in 100 parts by mass of the rubber component, containing silica and carbon black together with the rubber component, and having the loss tangent 30° C. tan ? of less than 0.25 measured under the conditions of temperature of 30° C., frequency of 10 Hz, initial strain of 5%, dynamic strain rate of 1%, and deformation mode: tensile; in the rubber composition, the carbon black content is more than 15 parts by mass with respect to 100 parts by mass of the rubber component, and the ratio of the silica content to the carbon black content is 1 or more; and the thickness of the tread portion is 15 mm or less.
    Type: Application
    Filed: May 23, 2023
    Publication date: December 28, 2023
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Naoya KITAMURA
  • Patent number: 11834451
    Abstract: This invention is in the field of medicinal chemistry and relates to a new class of small-molecules having a pyrazolopyridine (or similar) structure (e.g., Formula I) which function as inhibitors of the viral protein 2C protein activity and/or expression, and which function as therapeutics for the treatment of viral infection characterized with viral protein 2C activity and/or expression (e.g., non-polio enterovirus infection) (e.g., enterovirus D68 (EV-D68) infection, enterovirus A71 (EV-A71) infection, and coxsackievirus B3 (CVB3) infection.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: December 5, 2023
    Assignee: Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Jun Wang, Naoya Kitamura
  • Publication number: 20230190779
    Abstract: Provided is an agent for improving symptoms of menopause which is useful to improve symptoms of menopause. The agent for improving symptoms of menopause comprises delphinidin-3-rutinoside, cyanidin-3-rutinoside, or a combination thereof as an active ingredient.
    Type: Application
    Filed: April 16, 2021
    Publication date: June 22, 2023
    Applicant: Kao Corporation
    Inventors: Mayumi Otsuka, Natsumi NAGAMORI, Hideo OHMINAMI, Naoya KITAMURA, Naoki YAMAMOTO
  • Patent number: 11628153
    Abstract: An agent for preventing or ameliorating nocturia, containing rosmarinic acid or a salt thereof as an active ingredient.
    Type: Grant
    Filed: May 27, 2019
    Date of Patent: April 18, 2023
    Assignee: Kao Corporation
    Inventor: Naoya Kitamura
  • Publication number: 20220306627
    Abstract: This invention is in the field of medicinal chemistry and relates to a new class of small-molecules having a pyrazolopyridine (or similar) structure (e.g., Formula I) which function as inhibitors of the viral protein 2C protein activity and/or expression, and which function as therapeutics for the treatment of viral infection characterized with viral protein 2C activity and/or expression (e.g., non-polio enterovirus infection) (e.g., enterovirus D68 (EV-D68) infection, enterovirus A71 (EV-A71) infection, and coxsackievirus B3 (CVB3) infection.
    Type: Application
    Filed: March 28, 2022
    Publication date: September 29, 2022
    Inventors: Jun Wang, Naoya Kitamura
  • Publication number: 20220169077
    Abstract: Provided is a tire comprising a tread formed of a rubber composition comprising a rubber component comprising 0 to 50% by mass of an isoprene-based rubber, wherein the tire satisfies the following conditions (1) to (6): (1) when a tan ? at 30° C. (tan ?30° C.) is A, A?0.12, (2) when a ratio (EB80° C./EB23° C.) of an elongation at break at 80° C. (EB80° C.) to an elongation at break at 23° C. (EB23° C.) is B, 0.60?B?1.00, and (3) when an abrasion resistance index with a tire of Comparative example 1 being 100 as measured by a LAT tester is C, 110?C?140, (4) when a ratio (LANDSh/LANDCr) of a land ratio of the entire pair of shoulder parts (LANDSh) to a land ratio of the crown part (LANDCr) is D, 0.80?D?2.00, (5) when a maximum groove depth of the circumferential main groove is E (mm), 5?E?20, and 2 ? 5 ? ( B × C / A ) × ( D / E ) ? 2 ? 0 ? 0 .
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Naoya KITAMURA
  • Publication number: 20210346331
    Abstract: Provided is a compound that inhibits the activity of TRPV4 and is useful for preventing or ameliorating overactive bladder, irritable bowel syndrome, and the like. A TRPV4 activity inhibitor is provided containing a rosmarinic acid derivative selected from the group consisting of the following formulas (Ia) to (Id), or a salt thereof, as an active ingredient.
    Type: Application
    Filed: October 9, 2019
    Publication date: November 11, 2021
    Applicant: KAO CORPORATION
    Inventors: Masazumi IWASHITA, Naoya KITAMURA
  • Publication number: 20210300859
    Abstract: The present invention provides a compound that inhibits the activity of TRPV4 and is useful for prevention or amelioration of an overactive bladder, an irritable bowel syndrome, etc.
    Type: Application
    Filed: June 19, 2019
    Publication date: September 30, 2021
    Applicant: KAO CORPORATION
    Inventors: Akihiro TAKAMURA, Naoya KITAMURA, Naoki YAMAMOTO, Kohjiro HASHIZUME
  • Publication number: 20210077448
    Abstract: An agent for preventing or ameliorating nocturia, containing rosmarinic acid or a salt thereof as an active ingredient.
    Type: Application
    Filed: May 27, 2019
    Publication date: March 18, 2021
    Applicant: Kao Corporation
    Inventor: Naoya KITAMURA
  • Patent number: 10550246
    Abstract: Provided are: a rubber composition for tires that achieves a balanced improvement in handling stability, crack resistance, ozone resistance, discoloration resistance, tire appearance, fuel economy, tensile strength, and scorch resistance; and a pneumatic tire formed from the rubber composition.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: February 4, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Naoya Kitamura, Ryuichi Tokimune
  • Patent number: 10550247
    Abstract: The present invention provides a rubber composition for tires which can improve crack resistance, ozone resistance, discoloration resistance, and tire appearance while maintaining a good balance between them, and also provides a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for tires, containing a rubber component having a combined content of polybutadiene rubber, natural rubber, and polyisoprene rubber of 80% by mass or more per 100% by mass of the rubber component, the rubber composition containing, per 100 parts by mass of the rubber component: 0.1 to 8.0 parts by mass of polyether (A) having a glycol ether content of 80% by mass or more and a HLB of 3.5 to 19.0, the polyether (A) excluding Pluronic nonionic surfactants; 2 to 70 parts by mass of carbon black; and 0.3 to 7.0 parts by mass of an antioxidant.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: February 4, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryuichi Tokimune, Naoya Kitamura, Kouji Kawaguchi, Naoya Hashimoto
  • Patent number: 10377178
    Abstract: The present invention aims to provide a rubber composition for tires that can improve processability, crack resistance, ozone resistance, discoloration resistance, and tire appearance while maintaining a good balance between them, and also to provide a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for tires, containing: a rubber component; an antioxidant; and polyether, the rubber component having a combined content of polybutadiene rubber, natural rubber, and polyisoprene rubber of 80% by mass or more per 100% by mass of the rubber component, the rubber composition containing the antioxidant in an amount of 0.3 to 7.0 parts by mass per 100 parts by mass of the rubber component, the polyether having an average mass content of at least two consecutive polyethylene oxide units of 85% or less of the polyethylene oxide mass content of the polyether.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: August 13, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryuichi Tokimune, Naoya Kitamura, Kouji Kawaguchi, Naoya Hashimoto
  • Publication number: 20180258260
    Abstract: The present invention provides a rubber composition for tires which can improve crack resistance, ozone resistance, discoloration resistance, and tire appearance while maintaining a good balance between them, and also provides a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for tires, containing a rubber component having a combined content of polybutadiene rubber, natural rubber, and polyisoprene rubber of 80% by mass or more per 100% by mass of the rubber component, the rubber composition containing, per 100 parts by mass of the rubber component: 0.1 to 8.0 parts by mass of polyether (A) having a glycol ether content of 80% by mass or more and a HLB of 3.5 to 19.0, the polyether (A) excluding Pluronic nonionic surfactants; 2 to 70 parts by mass of carbon black; and 0.3 to 7.0 parts by mass of an antioxidant.
    Type: Application
    Filed: November 27, 2015
    Publication date: September 13, 2018
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryuichi TOKIMUNE, Naoya KITAMURA, Kouji KAWAGUCHI, Naoya HASHIMOTO
  • Publication number: 20170320358
    Abstract: The present invention aims to provide a rubber composition for tires that can improve processability, crack resistance, ozone resistance, discoloration resistance, and tire appearance while maintaining a good balance between them, and also to provide a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for tires, containing: a rubber component; an antioxidant; and polyether, the rubber component having a combined content of polybutadiene rubber, natural rubber, and polyisoprene rubber of 80% by mass or more per 100% by mass of the rubber component, the rubber composition containing the antioxidant in an amount of 0.3 to 7.0 parts by mass per 100 parts by mass of the rubber component, the polyether having an average mass content of at least two consecutive polyethylene oxide units of 85% or less of the polyethylene oxide mass content of the polyether.
    Type: Application
    Filed: November 27, 2015
    Publication date: November 9, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryuichi TOKIMUNE, Naoya KITAMURA, Kouji KAWAGUCHI, Naoya HASHIMOTO
  • Publication number: 20170317048
    Abstract: The present invention provides a conductive bonded assembly utilizing particles of Ni or an Ni alloy as conductive particles so as to enable firing under non-pressing conditions and further realize an excellent bonding strength, electron migration characteristic, and ion migration characteristic. The conductive bonded assembly of the present invention is a conductive bonded assembly of an electronic component which has a first bondable member (for example, electrode material), a second bondable member (for example, a semiconductor device on an Si or SiC substrate), and a conductive bonding layer bonding these bondable members together, where the bonding layer is an Ni sintered body formed by a sintered body of Ni particles which has a porosity of 30% or less, and, further, can be obtained by heating and sintering the Ni particles at the time of firing where the Ni sintered bonding layer is formed.
    Type: Application
    Filed: November 6, 2015
    Publication date: November 2, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Norie MATSUBARA, Shinji ISHIKAWA, Tomohiro UNO, Takayuki SHIMIZU, Naoya KITAMURA
  • Publication number: 20170260373
    Abstract: Provided are: a rubber composition for tires that achieves a balanced improvement in handling stability, crack resistance, ozone resistance, discoloration resistance, tire appearance, fuel economy, tensile strength, and scorch resistance; and a pneumatic tire formed from the rubber composition.
    Type: Application
    Filed: November 11, 2015
    Publication date: September 14, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Naoya KITAMURA, Ryuichi TOKIMUNE
  • Publication number: 20040096354
    Abstract: An ozone deodorizing/sterilizing device is proposed which includes an air pump for supplying pressurized air, an ozone generator for producing ozone by silent discharge, and an ozone spray device having a spray nozzle for atomizing water with the pressurized air containing ozone as a driving fluid and spraying it with air. The spray nozzle is formed to atomize water by setting the nozzle hole diameter so that water will be atomized into ultrafine volatile fog drips and fog drips will be sprayed within a predetermined range from the spray nozzle and the target space to be sterilized will be kept from getting wet.
    Type: Application
    Filed: November 18, 2002
    Publication date: May 20, 2004
    Inventors: Shinnosuke Nomura, Naoya Kitamura
  • Patent number: 6707682
    Abstract: A low-EMI circuit which realizes a high mounting density by converting the potential fluctuation of a power supply layer with respect to a ground layer which occurs on switching an IC device etc., into Joule's heat in the substrate without using any parts as a countermeasure against the EMI. Its structure, a circuit board using it, and a method of manufacturing the circuit board are also disclosed. Parallel plate lines in which the Q-value of the stray capacitance between solid layers viewed from the power supply layer and ground layer is equivalently reduced and which are matchedly terminated by forming a structure in which a resistor (resistor layer) and another ground layer are provided in addition to the power supply layer and the ground layer on a multilayered circuit board. A closed shield structure is also disclosed.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: March 16, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Yutaka Akiba, Yasunori Narizuka, Hirayoshi Tanei, Naoya Kitamura