Patents by Inventor Yasuhiro Ishikawa

Yasuhiro Ishikawa 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: 20140343200
    Abstract: Provided is a polycarbonate resin composition including, with respect to 100 parts by mass of an aromatic polycarbonate resin mixture (A) consisting of 5 to 100 mass % of an aromatic polycarbonate-polyorganosiloxane copolymer (A-1) and 95 to 0 mass % of an aromatic polycarbonate resin (A-2) except the component (A-1), the aromatic polycarbonate resin mixture (A) having a content of a polyorganosiloxane unit is 1 mass % or more, 0.002 to 0.200 parts by mass of a phosphorus-based antioxidant (B) and 0 to 0.200 parts by mass of an epoxidation stabilizer (C), in which a reduction ratio P between the viscosity-average molecular weights of the resin composition before and after a pressure cooker test calculated from the calculation equation (I) is 20% or less.
    Type: Application
    Filed: January 29, 2013
    Publication date: November 20, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami Takimoto, Yasuhiro Ishikawa, Yusuke Aoki
  • Publication number: 20140327316
    Abstract: Provided is a power system that can arbitrarily set output power while stabilizing output voltages. Connection terminals 13 and 23 of lower power sources 1 and 2 are connected to external connection terminals 41 in parallel. Voltage measurement section 31 measures voltage values of external connection terminals 41 as measured voltage values. Power converters 12 and 22 measure power supply capacities of lower power sources 1 and 2, respectively. Output instruction section 32 adjusts power or currents flowing through connection terminals 13 and 23 based on the measured voltage values and the power supply capacities so that the measured voltage values are included in a predetermined voltage range.
    Type: Application
    Filed: November 14, 2012
    Publication date: November 6, 2014
    Applicants: TAKASAGO LTD., NEC CORPORATION
    Inventors: Shingo Takahashi, Yasuhiro Ishikawa, Kazuaki Honda
  • Publication number: 20140316077
    Abstract: The present invention provides a method for producing a polycarbonate-polyorganosiloxane copolymer economically and stably, in particular, the present invention is concerned with a method for continuous production of a polycarbonate-polyorganosiloxane copolymer including (A) a step of withdrawing a polymerization reaction solution obtained by polymerizing a dihydric phenol compound, a carbonate precursor, and a polyorganosiloxane in the presence of an alkaline compound aqueous solution and a water-insoluble organic solvent continuously or intermittently from a reactor; (B) a step of separating the polymerization reaction solution withdrawn in the step (A) into an aqueous phase and a water-insoluble organic solvent phase; and (C) a step of after washing the water-insoluble organic solvent phase separated in the step (B) with an acidic aqueous solution, separating the resultant into an aqueous phase and a water-insoluble organic solvent phase, wherein the content of the polycarbonate-polyorganosiloxane copolyme
    Type: Application
    Filed: November 16, 2012
    Publication date: October 23, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Hiroaki Motegi, Yukiko Nagao
  • Publication number: 20140296469
    Abstract: The present invention provides a method for producing a polycarbonate-polyorganosiloxane copolymer economically and stably, in particular, the present invention is concerned with a method for continuous production of a polycarbonate-polyorganosiloxane copolymer including (A) a step of withdrawing a polymerization reaction solution obtained by polymerizing a dihydric phenol compound, a carbonate precursor, and a polyorganosiloxane in the presence of an alkaline compound aqueous solution and a water-insoluble organic solvent continuously or intermittently from a reactor; (B) a step of separating the polymerization reaction solution withdrawn in the step (A) into an aqueous phase and a water-insoluble organic solvent phase; and (C) a step of after washing the water-insoluble organic solvent phase separated in the step (B) with an acidic aqueous solution, separating the resultant into an aqueous phase and a water-insoluble organic solvent phase, wherein the aqueous phase separated in the step (C) is extracted wit
    Type: Application
    Filed: November 16, 2012
    Publication date: October 2, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Hiroaki Motegi, Yukiko Nagao
  • Patent number: 8845611
    Abstract: There is provided a multi-chamber bag that is capable of securely checking a medicinal substance accommodated therein without the necessity to perform a troublesome work, while preventing a matter deteriorating the medicinal substance from reaching the inside of a medicinal-substance accommodation chamber and hence securely preventing the deterioration of the medicinal substance. In a multi-chamber bag having a bag body that has a strong seal part that joins two sheet members together to define an interior space of the bag body, and a weak seal part that joints the two sheet members together so as to be able to rupture them apart, thereby partitioning the interior space of the bag body into a medicinal-substance accommodation chamber and a diluting-solution accommodation chamber, a pair of cover sheets are provided to respectively cover the medicinal-substance accommodation chamber.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: September 30, 2014
    Assignee: Otsuka Pharmaceutical Factory, Inc.
    Inventors: Tatsuro Tsuruoka, Yasuhiro Ishikawa
  • Publication number: 20140256888
    Abstract: Provided is a polycarbonate-polyorganosiloxane copolymer having high impact resistance and excellent transparency, in particular, a high total light transmittance and a small haze, and a method of producing thereof. Specifically, provided is a polycarbonate-polyorganosiloxane copolymer, containing a main chain having a repeating unit represented by the following general formula (I) and a constituent unit represented by the following general formula (II), in which: n in the general formula (II) is 25 to 50; and the copolymer satisfies the following conditions (a) and (b): (a) a molded article having a thickness of 2 mm made of the copolymer has a total light transmittance measured based on ISO 13468 of 88% or more and a haze measured based on ISO 14782 of 0.7% or less; and (b) a molded article having a thickness of 3 mm made of the copolymer has a total light transmittance measured based on ISO 13468 of 88% or more and a haze measured based on ISO 14782 of 1.0% or less.
    Type: Application
    Filed: October 15, 2012
    Publication date: September 11, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Yukiko Nagao, Hiroaki Motegi
  • Publication number: 20140239716
    Abstract: Provided is an AC power supply apparatus including a first AC power supply generation unit that generates a first AC voltage for a first terminal corresponding to a u-phase; a second AC power supply generation unit that generates a second AC voltage for a second terminal corresponding to a v-phase; a third AC power supply generation unit that generates a third AC voltage for a third terminal corresponding to a w-phase; and a control unit that controls a phase and an amplitude of each of the AC voltages output from the first to third AC power supply generation units, in such a manner that the amplitude and the phase of each of the first to third AC voltages output to the first to third terminals, respectively, match an amplitude set value and a phase set value preliminarily set for each of the AC voltages.
    Type: Application
    Filed: October 29, 2013
    Publication date: August 28, 2014
    Applicant: TAKASAGO, LTD.
    Inventors: Yasuhiro ISHIKAWA, Kazuaki HONDA
  • Publication number: 20140239724
    Abstract: A power conditioner according to an exemplary aspect of the present invention includes a first converter that converts a first DC voltage supplied from an external power supply into a second DC voltage, an inverter that converts the second DC voltage into an AC voltage and outputs the AC voltage to an external line so as to keep receiving power by the external line from a supply source system in a predetermined range, and an energy management unit that stops operations of the first converter and the inverter at predetermined time previously determined based on a magnitude of load power consumed by a load connected to the external line.
    Type: Application
    Filed: November 18, 2013
    Publication date: August 28, 2014
    Applicant: TAKASAGO, LTD.
    Inventors: Yasuhiro ISHIKAWA, Kazuaki HONDA
  • Patent number: 8795824
    Abstract: Provided is a light diffusing resin composition, which, when molded into a large-plane light diffusing plate, is free of yellowing due to thermal deterioration, and can exhibit good light diffusing property, and a light diffusing plate using the resin composition. The light diffusing resin composition includes 100 parts by mass of a polycarbonate resin containing a polycarbonate copolymer (A) having repeating structural units represented by formulae (I) and (II) and 0.01 to 10 parts by mass of a light diffusing agent (B).
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: August 5, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yasuhiro Ishikawa, Masami Kogure, Hiroshi Kawato
  • Publication number: 20140106208
    Abstract: A polycarbonate resin composition for a battery pack, which comprises: 100 parts by mass of (A) a polycarbonate-based resin composed of 5 to 100 mass % of a polycarbonate-polyorganosiloxane copolymer (A-1) whose main chain is formed of a structural unit represented by the general formula (I) and a structural unit represented by the general formula (II), and that contains 2 to 10 mass % of a polyorganosiloxane block, and 0 to 95 mass % of an aromatic polycarbonate (A-2) except the copolymer (A-1); and 0.01 to 1 parts by mass of (B) a phosphorus-based antioxidant; and a battery pack formed by using the resin composition.
    Type: Application
    Filed: May 28, 2012
    Publication date: April 17, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasuhiro Ishikawa, Yusuke Aoki, Takayoshi Tanaka
  • Publication number: 20130251301
    Abstract: An optical control element capable of efficiently removing unnecessary higher mode light without complicating a manufacturing process of the optical control element is provided. The optical control element includes a substrate having an electro-optical effect, optical waveguides that are formed on the substrate, and a control electrode that controls light waves propagating through the optical waveguides, and the optical waveguides include an output waveguide portion which derives fundamental mode light, and a subsidiary waveguide portion which is connected to the output waveguide portion and derives higher mode light, and removal means is formed in contact with the subsidiary waveguide portion, for removing the higher mode light propagating through the subsidiary waveguide portion.
    Type: Application
    Filed: October 25, 2010
    Publication date: September 26, 2013
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoshi Oikawa, Yuhki Kinpara, Yasuhiro Ishikawa, Katsutoshi Kondou
  • Patent number: 8526768
    Abstract: A light control device with a reduced electric loss is provided which can suppress a phenomenon of electrically reflecting a high-frequency signal even when it employs a dielectric anisotropic substrate. A light control device includes a signal electrode formed on a dielectric anisotropic substrate and ground electrodes disposed with the signal electrode interposed therebetween. Here, the signal electrode includes at least two signal electrode portions disposed in directions in which the dielectric constant of the substrate is different from each other and a curved connecting portion connecting the at least two signal electrode portions. The connecting portion is configured so that the characteristic impedance in parts connected to the at least two signal electrode portions is equal to that of the corresponding signal electrode portion, and the characteristic impedance in the connecting portion between the at least two signal electrode portions continuously varies.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: September 3, 2013
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Yuhki Kinpara, Masayuki Ichioka, Junichiro Ichikawa, Satoshi Oikawa, Yasuhiro Ishikawa
  • Publication number: 20130224295
    Abstract: It is an object of the present invention to provide a powder, a granule, an orally-disintegrating tablet, and the like that contain a drug causing bitterness, and that can suppress the bitterness in the mouth and improve solubility thereof in the stomach. The present invention provides a drug-containing granule comprising (a) a core particle that contains a drug causing bitterness, and (b) a masking coating that coats the core particle, wherein the masking coating contains: at least one polymer selected from methacrylic acid copolymer S, methacrylic acid copolymer L, methacrylic acid-ethyl acrylate copolymer, ethyl acrylate-methyl methacrylate copolymer, and ethyl acrylate-methyl methacrylate-ethyl ammonium trimethyl chloride methacrylate copolymer; and at least one diluent selected from D-mannitol, lactose, trehalose, xylitol, maltitol, and erythritol, an orally-disintegrating tablet comprising the drug-containing granule, and the like.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 29, 2013
    Applicant: KYOWA HAKKO KIRIN CO., LTD.
    Inventors: Yuji Miyamoto, Takuya Tokuda, Motohiro Ota, Yasuhiro Ishikawa
  • Patent number: 8492485
    Abstract: Provided is a polycarbonate-based resin composition for sliding use including 0.01 to 1 part by mass of an antioxidant with respect to 100 parts by mass of a polycarbonate-polyorganosiloxane copolymer which has structural units represented by a general formula (A) and structural units represented by a general formula (B), which contains a polyorganosiloxane block moiety containing the structural units represented by the general formula (B) at a content of 1 to 30 mass %, and which has an average repetition number of the structural units represented by the general formula (B) of 110 to 1000. The polycarbonate-based resin composition for sliding use has a specific structure having improved wear resistance, in particular, improved sliding property. Also provided is a molded article using the resin composition, and excellent in wear resistance and sliding property.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: July 23, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yasuhiro Ishikawa, Eiji Tamura
  • Publication number: 20130064492
    Abstract: An optical waveguide device having a Mach-Zehnder type waveguide formed on a substrate is provided in which a slope of two waveguides input to an optical coupler on an output side of the Mach-Zehnder type waveguide is 0 degrees, a waveguide of the optical coupler after being coupled by the optical coupler is a multi-mode waveguide, and the waveguide which is output from the optical coupler is a three-branched waveguide including an output main waveguide and two output sub waveguides interposing the output main waveguide therebetween.
    Type: Application
    Filed: March 9, 2011
    Publication date: March 14, 2013
    Applicant: Sumitomo Osaka Cement CO., Ltd.
    Inventors: Yasuhiro Ishikawa, Katsutoshi Kondou, Norikazu Miyazaki, Satoshi Oikawa
  • Patent number: 8380015
    Abstract: The present invention relates to an optical control device capable of achieving an accurate match of modulation timing and modulation intensity between optical waves propagating through optical waveguides disposed between a plurality of signal electrodes in an optical control device using an anisotropic dielectric substrate.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: February 19, 2013
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Yuhki Kinpara, Masayuki Ichioka, Junichiro Ichikawa, Satoshi Oikawa, Yasuhiro Ishikawa
  • Patent number: 8318201
    Abstract: (wherein Y1 and Y2 may be the same or different and each represents a hydrogen atom, halogen or lower alkyl; and Z and A may be the same or different and each represents substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl) The present invention provides, for example, a method for stabilization of a diarylvinylene compound such as a compound represented by the above formula (I) or the like, or a pharmaceutically acceptable salt thereof in a solid formulation containing the diarylvinylene compound or the pharmaceutically acceptable salt thereof, which comprises allowing an inorganic substance and/or a colorant to exist in the solid formulation, and the like.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: November 27, 2012
    Assignee: Kyowa Hakko Kirin Co., Ltd.
    Inventors: Akihiro Uchida, Yasuhiro Ishikawa, Yasuhiko Ueno, Kiichiro Kaji, Masaharu Aimoto, Naoki Kaneko
  • Publication number: 20120283393
    Abstract: The present invention is a polycarbonate-polyorganosiloxane copolymer (A-1) comprising a polycarbonate block composed of a specific structural unit and a polyorganosiloxane block composed of a specific structural unit, wherein (1) the content of the polyorganosiloxane block portion is 1 to 30% by mass, (2) the average number of the repeating structural units represented by the general formula (II) is 70 to 1000, (3) the viscosity-average molecular weight of the copolymer is 13000 to 26000, and (4) the content of the phenol residue having an allyl group in the copolymer is 400 ppm by mass or less, the copolymer providing a molded article having excellent thermal stability and excellent color tone after even when the molding is carried out at high temperature; a process for production of the copolymer; and a polycarbonate resin using the polycarbonate-polyorganosiloxane copolymer.
    Type: Application
    Filed: December 9, 2010
    Publication date: November 8, 2012
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Yasuhiro Ishikawa
  • Publication number: 20120183252
    Abstract: Provided is a small optical waveguide device with little reflected light, the optical waveguide device including: an optical waveguide element of which a first output waveguide is inclined with respect to an output end face and a second output waveguide is inclined with respect to both the first output waveguide and the output end face; and a lens that allows beams respectively output from the first and second output waveguides to be parallel to each other.
    Type: Application
    Filed: September 24, 2010
    Publication date: July 19, 2012
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Miki Okamura, Ryo Shimizu, Yasuhiro Ishikawa
  • Publication number: 20120108739
    Abstract: Provided is a polycarbonate-based resin composition for sliding use including 0.01 to 1 part by mass of an antioxidant with respect to 100 parts by mass of a polycarbonate-polyorganosiloxane copolymer which has structural units represented by a general formula (A) and structural units represented by a general formula (B), which contains a polyorganosiloxane block moiety containing the structural units represented by the general formula (B) at a content of 1 to 30 mass %, and which has an average repetition number of the structural units represented by the general formula (B) of 110 to 1000. The polycarbonate-based resin composition for sliding use has a specific structure having improved wear resistance, in particular, improved sliding property. Also provided is a molded article using the resin composition, and excellent in wear resistance and sliding property.
    Type: Application
    Filed: July 6, 2009
    Publication date: May 3, 2012
    Applicant: Idemitsu Kosan Co. Ltd
    Inventors: Yasuhiro Ishikawa, Eiji Tamura