Patents by Inventor Ryoji Kojima

Ryoji Kojima 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: 20190300658
    Abstract: Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of ?20° C. to 80° C. and satisfying the following formula (I): (Tip clearance d of kneading machine)3?(Volume V of polymer ready for introduction into kneading machine)?2.0×104 cm3??(I).
    Type: Application
    Filed: June 17, 2019
    Publication date: October 3, 2019
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Yukari TOMISAKI, Ryoji KOJIMA, Tsuyoshi TSUCHIDA, Ayaka KITAOU
  • Patent number: 10412084
    Abstract: In this information processing system including a server, a communication terminal communicable with the server via the Internet, and a peripheral device capable of performing short-range wireless communication with the communication terminal, the peripheral device transmits, to the server, device identification information which is information capable of uniquely identifying the peripheral device. On the basis of the transmitted device identification information, the server determines whether the peripheral device is a peripheral device whose connection to the communication terminal is permissible, and when such connection is permissible, the server transmits connection permission information indicating that the connection to the communication terminal is permitted. Then, the peripheral device executes a setting process for enabling the connection to the communication terminal on the basis of the connection permission information.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: September 10, 2019
    Assignee: Nintendo Co., Ltd.
    Inventors: Yohei Kojima, Ryoji Kuroda, Tatsuhiro Shirai, Jumpei Wada
  • Patent number: 10341313
    Abstract: This first communication section transmits, to an authentication server, an encryption key, identification information capable of uniquely identifying a peripheral device, and signature information of the identification information. A second communication section receives data based on an authentication process performed in the authentication server on the basis of the identification information and the signature information transmitted by the first communication section, then, encrypts second data transmission request information, and transmits the encrypted request information to the authentication server. A third communication section receives second data which is encrypted and transmitted from the authentication server in response to the request information transmitted by the second communication section, then decrypts the second data, and transmits the decrypted second data to the authentication server.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: July 2, 2019
    Assignee: Nintendo Co., Ltd.
    Inventors: Yohei Kojima, Ryoji Kuroda, Tatsuhiro Shirai, Jumpei Wada
  • Patent number: 10336890
    Abstract: Provided by the present invention are a rubber composition for studless winter tires capable of improving performance on snow and ice while maintaining good abrasion resistance, and a studless winter tire including the rubber composition. The present invention relates to a rubber composition for studless winter tires containing a rubber component and bionanofibers, the bionanofibers having an average fiber diameter of 0.1 ?m or less, the rubber component having a combined amount of natural rubber and polybutadiene rubber of 30% to 100% by mass based on 100% by mass of the rubber component, the rubber composition containing the bionanofibers in an amount of 1 to 10 parts by mass relative to 100 parts by mass of the rubber component.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: July 2, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Ryoji Kojima
  • Patent number: 10326078
    Abstract: It is an object of the present invention to provide a light emitting element, which is resistant to repetition of an oxidation reaction. It is another object of the invention to provide a light emitting element, which is resistant to repetition of a reduction reaction. An anthracene derivative is represented by a general formula (1). In the general formula (1), R1 represents hydrogen or an alkyl group having 1 to 4 carbon atoms, R2 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and an aryl group having 6 to 12 carbon atoms, R3 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 12 carbon atoms, Ph1 represents a phenyl group, and X1 represents an arylene group having 6 to 15 carbon atoms.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: June 18, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Harue Nakashima, Sachiko Kawakami, Kumi Kojima, Ryoji Nomura, Nobuharu Ohsawa
  • Patent number: 10291412
    Abstract: An information processing system is provided that includes a server, a communication terminal, and a peripheral device. The peripheral device includes a secure storage section with a secure region. The secure region is accessible by internal component of the peripheral device. Certificate data is read out from the secure region and transmitted to the server. The server performs authentication, on the basis of the certificate data, regarding whether the peripheral device is a peripheral device whose connection to the communication terminal is permissible. In response to authentication of the peripheral device, execution of a process that involves transmission and reception of encrypted data is permitted between the peripheral device and the communication terminal.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: May 14, 2019
    Assignee: NINTENDO CO., LTD.
    Inventors: Yohei Kojima, Ryoji Kuroda, Tatsuhiro Shirai
  • Publication number: 20190062531
    Abstract: There is provided a pneumatic tire having improved wet grip performance and fuel efficiency in a good balance. The pneumatic tire is provided with a tread composed of a rubber composition comprising not less than 0.5 part by mass of silica and 5 to 50 parts by mass of a resin having a melt viscosity (150° C.) of 12000 to 15000 mPa·s based on 100 parts by mass of a rubber component. The rubber component comprises 40 to 100% by mass of a styrene-butadiene rubber and 0 to 60% by mass of a butadiene rubber. The resin is selected from the group consisting of a terpene phenol resin, a phenol resin and an alkylphenol resin.
    Type: Application
    Filed: August 30, 2017
    Publication date: February 28, 2019
    Applicants: Kraton Chemical, LLC, Sumitomo Rubber Industries, Ltd.
    Inventors: Wolfgang Pille-Wolf, Jérémie Pichereau, Mikako Takenaka, Ryoji Kojima, Suguru Izumo
  • Patent number: 10189974
    Abstract: A purpose of the present invention is to provide a tire assuring that clogging of snow and sticking of snow are inhibited, particularly a tire assuring that clogging of snow and sticking of snow can be inhibited and having good performance on ice and snow and abrasion resistance without depending on the tread pattern form while maintaining wet grip performance and abrasion resistance. The tire is composed of a rubber composition which comprises a rubber component comprising a modified butadiene rubber and silica and has a pure water contact angle of from 125° to 140°.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: January 29, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mikako Takenaka, Ryoji Kojima
  • Patent number: 10071598
    Abstract: A studless winter tire that has enhanced performance on ice and snow both initially and after degradation while maintaining good abrasion resistance is provided. The studless winter tire includes: a cap tread formed from a rubber composition A; and a base tread formed from a rubber composition B. The studless winter tire satisfies the following formulas (1) and (2): (1) a×c/100<b×d/100; and (2) a?8, where a represents the softener content (% by mass) based on 100% by mass of the rubber composition A; b represents the softener content (% by mass) based on 100% by mass of the rubber composition B; c represents the percentage by mass (% by mass) of the cap tread based on the entire tread; and d represents the percentage by mass (% by mass) of the base tread based on the entire tread.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: September 11, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Ryoji Kojima
  • Publication number: 20180118896
    Abstract: Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of ?20° C. to 80° C. and satisfying the following formula (I): (Tip clearance d of kneading machine)3?(Volume V of polymer ready for introduction into kneading machine)?2.0×104 cm3 ?? (I).
    Type: Application
    Filed: October 16, 2017
    Publication date: May 3, 2018
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Yukari TOMISAKI, Ryoji KOJIMA, Tsuyoshi TSUCHIDA, Ayaka KITAOU
  • Patent number: 9879109
    Abstract: Provided are rubber compositions for tires capable of providing tire components and pneumatic tires that have the same level of fuel efficiency and wet grip performance (particularly, wet grip performance) as those of tire components and pneumatic tires containing conventional synthetic rubber, while satisfying the requirements for a sound material-cycle society. The present invention relates to rubber compositions for tires containing a biomass-derived rubber polymerized from an aromatic vinyl compound and a diene, the biomass-derived rubber having a pMC (percent modern carbon) measured in accordance with ASTM D 6866-10 of 1% or higher.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: January 30, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryoji Kojima, Yuka Yokoyama, Masafumi Yoshino
  • Publication number: 20170313860
    Abstract: According to the process for preparing a vulcanized rubber composition of the invention comprising (a) a step of preparing a master batch comprising a butadiene rubber and silica, (b) a step of preparing a master batch comprising an isoprene rubber and silica, (c) a step of kneading the master batch obtained in (a) and the master batch obtained in (b), and (d) a step of vulcanizing a kneaded product obtained in (c), wherein the obtained vulcanized rubber composition has a BR phase and a IR phase which are incompatible with each other and comprises a predetermined amount of a terpene resin, a predetermined abundance ratio ? of silica in the BR phase satisfies 0.3???0.7 (Relation 1), and a proportion ? of the butadiene rubber satisfies 0.4???0.
    Type: Application
    Filed: November 13, 2015
    Publication date: November 2, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mikako TAKENAKA, Ryoji KOJIMA
  • Publication number: 20170313859
    Abstract: According to the process for preparing a vulcanized rubber composition of the invention comprising (a) a step of preparing a master batch comprising a butadiene rubber and silica, (b) a step of preparing a master batch comprising an isoprene rubber and silica, (c) a step of kneading the master batch obtained in (a) and the master batch obtained in (b), and (d) a step of vulcanizing a kneaded product obtained in (c), wherein the obtained vulcanized rubber composition comprises a BR phase and a IR phase, which are incompatible with each other, a predetermined abundance ratio ? of silica in the BR phase satisfies 0.3???0.7 (Relation 1), and a proportion ? of the butadiene rubber satisfies 0.4???0.8 (Relation 2) it is possible to improve performance on ice and abrasion resistance and to provide a vulcanized rubber composition having excellent performance on ice and abrasion resistance, and a studless tire with a tread made using the same.
    Type: Application
    Filed: November 13, 2015
    Publication date: November 2, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mikako TAKENAKA, Ryoji KOJIMA
  • Publication number: 20170291450
    Abstract: There is provided a pneumatic tire having improved wet grip performance and fuel efficiency in a good balance. The pneumatic tire is provided with a tread composed of a rubber composition comprising not less than 0.5 part by mass of silica and not less than 5 parts by mass of a resin based on 100 parts by mass of a rubber component comprising 40 to 100% by mass of a styrene-butadiene rubber and 0 to 60% by mass of a butadiene rubber, wherein an adhesive force of the rubber composition measured by the specified adhesion test method is not less than 300 when an adhesive force of a reference rubber composition wherein the whole amount of resin has been replaced by oil is assumed to be 100, and a ratio of a loss tangent tan ?0° C. at 0° C. of the rubber composition to a loss tangent tan ?70° C. at 70° C. of the rubber composition (tan ?0° C./tan ?70° C. is from 3.0 to 10.
    Type: Application
    Filed: March 27, 2017
    Publication date: October 12, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Suguru IZUMO, Ryoji KOJIMA
  • Publication number: 20170240732
    Abstract: According to the process for preparing a vulcanized rubber composition of the invention comprising (a) a step of preparing a master batch comprising a modified conjugated diene polymer and silica, (b) a step of preparing a master batch comprising an isoprene rubber and silica, (c) a step of kneading the master batch obtained in (a) and the master batch obtained in (b), and (d) a step of vulcanizing a kneaded product obtained in (c), wherein the obtained vulcanized rubber composition comprises a phase A comprising a modified conjugated diene polymer and a phase B comprising an isoprene rubber, which are incompatible with each other, an abundance ratio ? of silica in the phase A satisfies 0.5???0.9 (Relation 1), and a proportion ? of the modified conjugated diene polymer satisfies 0.4???0.
    Type: Application
    Filed: November 13, 2015
    Publication date: August 24, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mikako TAKENAKA, Ryoji KOJIMA
  • Patent number: 9695302
    Abstract: Provided are: a rubber composition for studless winter tires, achieving balanced improvement in performance on ice and snow, wet grip performance, and abrasion resistance; and a studless winter tire including a tread formed from the same. The rubber composition for studless winter tires includes: a rubber component including NR and BR; an aromatic oil; silica; and carbon black, wherein the combined amount of NR and BR is 30 mass % or more per 100 mass % of the rubber component; the amount of aromatic oil is 12-85 parts by mass per 100 parts by mass of the rubber component; the silica content is 45 mass % or more per 100 mass % in total of silica and carbon black; the silica includes at least one silica (1) with an N2SA of 100 m2/g or less and at least one silica (2) with an N2SA of 180 m2/g or more; the combined amount of silicas (1) and (2) is 30-150 parts by mass per 100 parts by mass of the rubber component; and the amounts of silicas (1) and (2) satisfy: [Amount of silica (1)]×0.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: July 4, 2017
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Ryoji Kojima
  • Patent number: 9657121
    Abstract: The present invention provides rubber compositions for tires capable of providing tire components and pneumatic tires having low-temperature properties and abrasion resistance that are equivalent to those of tire components and pneumatic tires formed from conventional synthetic rubber, respectively, while meeting the demand for a sound material-cycle society. The present invention relates to rubber compositions for tires containing a biomass-derived rubber obtained by polymerizing a biomass-derived monomer component, the biomass-derived rubber having a pMC (percent modern carbon) value of 1% or greater as determined in conformity with ASTM D6866-10, and having a Tg (glass transition temperature) value of ?120° C. to ?80° C.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: May 23, 2017
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryoji Kojima, Yuka Yokoyama
  • Publication number: 20170137598
    Abstract: A purpose of the present invention is to provide a tire assuring that clogging of snow and sticking of snow are inhibited, particularly a tire assuring that clogging of snow and sticking of snow can be inhibited and having good performance on ice and snow and abrasion resistance without depending on the tread pattern form while maintaining wet grip performance and abrasion resistance. The tire is composed of a rubber composition which comprises a rubber component comprising a modified butadiene rubber and silica and has a pure water contact angle of from 125° to 140°.
    Type: Application
    Filed: October 13, 2016
    Publication date: May 18, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mikako TAKENAKA, Ryoji KOJIMA
  • Publication number: 20170066909
    Abstract: Provided by the present invention are a rubber composition for studless winter tires capable of improving performance on snow and ice while maintaining good abrasion resistance, and a studless winter tire including the rubber composition. The present invention relates to a rubber composition for studless winter tires containing a rubber component and bionanofibers, the bionanofibers having an average fiber diameter of 0.1 ?m or less, the rubber component having a combined amount of natural rubber and polybutadiene rubber of 30% to 100% by mass based on 100% by mass of the rubber component, the rubber composition containing the bionanofibers in an amount of 1 to 10 parts by mass relative to 100 parts by mass of the rubber component.
    Type: Application
    Filed: February 18, 2015
    Publication date: March 9, 2017
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Ryoji KOJIMA
  • Patent number: 9318353
    Abstract: A method of manufacturing a connection structure which includes a wiring substrate, a first electronic component that is flip-chip mounted on the front surface thereof, and a second electronic component that is flip-chip mounted on the rear surface. The method includes the steps of: temporarily mounting the first electronic component on the front surface of the wiring substrate with a first adhesive film disposed therebetween; temporarily mounting the second electronic component on the rear surface of the wiring substrate with a second adhesive film disposed therebetween, placing, on a pressure bonding receiving base, the wiring substrate on which the first electronic component and the second electronic component are temporarily mounted; and mounting the first electronic component and the second electronic component at a time onto the respective front and rear surfaces of the wiring substrate.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: April 19, 2016
    Assignee: DEXERIALS CORPORATION
    Inventor: Ryoji Kojima