Yasuhiro Ishikawa

Yasuhiro Ishikawa, Tokushima JP

Patent application number	Description	Published
20110022022	MULTI-CHAMBER BAG - 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. Each of the cover sheets is jointed to the facing sheet member so as to form an outside seal part surrounding the medicinal-substance accommodation chamber. One of the cover sheets has a structure capable of absorbing adverse influence causing matters, and a communication part for communication between spaces formed between both the sheet members and the both the cover sheets on both the sides is formed between an inside edge of the outside seal part and an inside edge of the strong seal part.	01-27-2011

Yasuhiro Ishikawa, Chiyoda-Ku JP

Patent application number	Description	Published
20100264855	Light control device - 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.	10-21-2010
20100266234	Optical control device - 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.	10-21-2010
20130064492	OPTICAL WAVEGUIDE DEVICE - 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.	03-14-2013
20130251301	OPTICAL CONTROL ELEMENT - 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.	09-26-2013

Yasuhiro Ishikawa, Tokyo JP

Patent application number	Description	Published
20100247023	OPTICAL WAVEGUIDE TYPE MODULATOR - An optical waveguide type modulator with a decreased driving voltage and an improved return loss of a driving signal is provided which includes an optical waveguide having a Mach-Zehnder type optical waveguide portion and a signal electrode and a ground electrode modulating an optical wave guided in the optical waveguide. The signal electrode is arranged along at least one of two branched waveguides and Y-branched portions of the Mach-Zehnder type optical waveguide portion and along a part of one Y-branched portion connected to the one branched waveguide. Outside the part of one Y-branched portion, the signal electrode is drawn across a symmetric axis of the Mach-Zehnder type optical waveguide portion with a gap from the one Y-branched portion, and is drawn so as not to extend along the other Y-branched portion connected to the one branched waveguide and so as not to extend across the symmetric axis with a gap from the one branched waveguide.	09-30-2010
20120183252	OPTICAL WAVEGUIDE DEVICE - 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.	07-19-2012

Yasuhiro Ishikawa, Chiba JP

Patent application number	Description	Published
20080221295	Method for Producing Polycarbonate Copolymer - The invention provides a method for producing a PC copolymer having a specific structure from a diester diol serving as a starting material, which method attains enhanced productivity.	09-11-2008
20080287610	Copolycarbonate, Copolycarbonate Composition, and Optical molded Article Obtained Therefrom - Provided is a copolycarbonate which can meet a wide range of molding conditions as a raw material and which results in providing good optical molded articles.	11-20-2008
20080300378	Method For Producing Polycarbonate Copolymer and Polycarbonate Copolymer - A method for producing a PC copolymer with improved productivity is provided. The PC copolymer has a specific structure and the method uses a diester diol-containing monomer as a raw material. The polycarbonate copolymer is produced by reacting a diester diol-containing monomer, a divalent phenol, and a carbonate precursor by interfacial polymerization, wherein the diester diol-containing monomer is a product of reaction between a hydroxybenzoic acid or an esterified product thereof and a polyalkylene glycol, wherein the esterification degree of hydroxyl groups of the polyalkylene glycol is 50 to 90 mol %.	12-04-2008
20090093583	LIGHT-DIFFUSING POLYCARBONATE RESIN COMPOSITION AND LIGHT DIFFUSER PLATE COMPRISING THE RESIN COMPOSITION - The present invention provides a light diffusing polycarbonate resin composition including a polycarbonate resin containing a polycarbonate copolymer which comprises a repeating unit represented by the general formula (I) shown below and a repeating unit represented by the general formula (II) shown below, which has a content of the repeating units of the general formula (II) of 1 to 30% by mass and which has a viscosity value of 30 to 71, and (B) a light diffusing agent compounded therein in an amount of 0.01 to 10 parts by mass per 100 parts by mass of the polycarbonate resin. The light diffusing polycarbonate resin composition and a light diffusing plate thereof show improved fluidity during molding and have excellent heat resistance, dimensional stability, luminance and color tone.	04-09-2009
20090175052	LIGHT GUIDE MEMBER AND ILLUMINATION UNIT - Disclosed is a light guide member which includes a polycarbonate copolymer having a repeating unit represented by the formula (I) and a repeating unit represented by the formula (II), which is thin, and which is free from thermal degradation (yellowing) or deterioration in properties caused by the generation of a gas, such as a light guide plate formed of a polycarbonate material. Also disclosed is an illumination unit using the light guide member.	07-09-2009
20090185363	POLYCARBONATE RESIN COMPOSITION, OPTICAL MOLDED BODY USING THE SAME, AND ILLUMINATION UNIT - Disclosed are a polycarbonate resin composition obtained by blending a specific amount of an acrylic resin (B) having a specific viscosity average molecular weight or a specific amount of a polyorganosiloxane into a polycarbonate resin containing a polycarbonate copolymer (A) having repeating structural units represented by the general formulae (I) and (II) below and an optical molded body using the resin composition such as a light guide member. The polycarbonate resin composition enables to obtain a molded body having good light conductivity and being free from yellowing due to thermal deterioration, even when it is molded into a large-sized light guide member or light guide plate.	07-23-2009
20090186208	LIGHT DIFFUSING RESIN COMPOSITION AND LIGHT DIFFUSING PLATE USING THE SAME - 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).	07-23-2009
20120108739	POLYCARBONATE RESIN COMPOSITION FOR SLIDING USE AND MOLDED ARTICLE USING THE RESIN COMPOSITION - 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.	05-03-2012
20120283393	POLYCARBONATE-POLYORGANOSILOXANE COPOLYMER, PROCESS FOR PRODUCTION OF THE COPOLYMER, AND POLYCARBONATE RESIN CONTAINING THE COPOLYMER - 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	11-08-2012
20140106208	POLYCARBONATE RESIN COMPOSITION FOR BATTERY PACK, AND BATTERY PACK - 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.	04-17-2014
20140296469	CONTINUOUS PRODUCTION METHOD FOR POLYCARBONATE-POLYORGANOSILOXANE COPOLYMER - 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 with a water-insoluble organic solvent, the content of the polycarbonate-polyorganosiloxane copolymer in the obtained extract is controlled to not more than 2% by mass, and a part or the whole of the extract is reused for the step (A).	10-02-2014
20140316077	METHOD FOR CONTINUOUS PRODUCTION OF POLYCARBONATE-POLYORGANOSILOXANE COPOLYMER - 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 copolymer in the aqueous phase separated in the step (C) is controlled to not more than 2% by mass, and a part or the whole of an extract obtained by extracting the aqueous phase separated in the step (C) with a water-insoluble organic solvent is reused for the step (A).	10-23-2014
20140343200	POLYCARBONATE RESIN COMPOSITION AND MOLDED ARTICLE - 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. The polycarbonate resin composition can be a material for a molded body capable of maintaining its excellent impact-resisting performance at low temperatures for a long time period even when repeatedly used under a high-temperature and high-humidity environment, and its discoloration or the like hardly occurs even when the resin composition is retained at high temperatures.	11-20-2014

Yasuhiro Ishikawa, Sunto-Gun JP

Patent application number	Description	Published
20130224295	GRANULE AND ORALLY-DISINTEGRATING TABLET CONTAINING DRUG CAUSING BITTERNESS - 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,	08-29-2013

Yasuhiro Ishikawa, Kanagawa JP

Patent application number	Description	Published
20140239716	AC POWER SUPPLY APPARATUS - 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.	08-28-2014
20140239724	POWER CONDITIONER AND POWER CONDITIONING METHOD - 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.	08-28-2014
20140327316	POWER SYSTEM AND CONTROL METHOD OF THE POWER SYSTEM - Provided is a power system that can arbitrarily set output power while stabilizing output voltages. Connection terminals	11-06-2014

Yasuhiro Ishikawa, Ichihara-Shi JP

Patent application number	Description	Published
20140256888	POLYCARBONATE-POLYORGANOSILOXANE COPOLYMER AND METHOD FOR PRODUCING SAME - 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.	09-11-2014