Patents by Inventor Naoki Fujiwara
Naoki Fujiwara 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).
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Publication number: 20180138713Abstract: A photovoltaic system includes photovoltaic cells, inverters, a reduced electricity output state determiner which determines whether each of the photovoltaic cells is in a reduced electricity output state, a first command value generator which generates a first command value for decreasing a first power factor of a first inverter determined as in the reduced electricity output state, a second command value generator which generates a second command value for increasing a second power factor of at least one of second inverters so as to compensate for output power of the first inverter, and a controller which controls the inverters.Type: ApplicationFiled: November 11, 2016Publication date: May 17, 2018Applicant: Toshiba Mitsubishi-Electric Industrial Systems CorporationInventors: Yuji MATSUOKA, Tatsuaki AMBO, Naoki FUJIWARA, Paul BIXEL, Ryuta SAKA
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Patent number: 9943825Abstract: Provided are graft copolymer particles enabling introduction of adsorptive functional groups adsorbing metals and others, a method for producing same, and an adsorbent using same. (1) Porous graft copolymer particles containing graft chains introduced into porous particles (particle surface having an average pore diameter of 0.01-50 ?m) including at least one resin selected from olefin resins, water-insoluble modified polyvinyl alcohol resins, amide resins, cellulosic resins, chitosan resins and (meth)acrylate resins. (2) A method for producing porous graft copolymer particles including (I) melt-kneading a polymer A and a polymer B other than the polymer A to obtain a compound material, (II) extracting and removing the polymer B from the compound material to obtain a porous material of the polymer A, (III) granulating the porous material, and (IV) introducing graft chains into the porous particles. (3) An adsorbent of porous graft copolymer particles.Type: GrantFiled: April 22, 2015Date of Patent: April 17, 2018Assignee: KURARAY CO., LTD.Inventors: Keisuke Morikawa, Yusuke Amano, Naoyuki Iwachido, Naoki Fujiwara, Takumi Takayama
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Patent number: 9937463Abstract: Provided is a gas separation apparatus advantageous in suppression of increase in pressure loss and achievement of reduced size and weight, thereby reducing costs. The gas separation apparatus causes an absorbent to flow down along the surface of a packing arranged in a treatment chamber, and supplies to the treatment chamber a gas to be treated which contains a target gas component, and then causes the gas to be treated and the absorbent flowing down along the surface of the packing to come into gas-liquid contact. Thus the target gas component contained in the gas to be treated is absorbed into the absorbent and separated or recovered from the gas to be treated. The packing has at least one packing unit configured by a plurality of expanded metal plates standing vertically and being aligned.Type: GrantFiled: January 23, 2014Date of Patent: April 10, 2018Assignee: IHI CorporationInventors: JIan Huang, Shinsuke Matsuno, Atsushi Murakami, Yoshiyuki Iso, Mariko Katou, Kenji Takano, Naoki Fujiwara
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Patent number: 9899229Abstract: A substrate processing apparatus includes a phosphoric acid supply device for supplying phosphoric acid aqueous solution onto the upper surface of a substrate held on a spin chuck, a heater for emitting heat toward a portion of the upper surface of the substrate with the phosphoric acid aqueous solution being held on the substrate, a heater moving device for moving the heater to move a position heated by the heater within the upper surface of the substrate, a water nozzle for discharging water therethrough toward a portion of the upper surface of the substrate with the phosphoric acid aqueous solution being held on the substrate and a water nozzle moving device for moving the water nozzle to move the water landing position within the upper surface of the substrate.Type: GrantFiled: June 22, 2016Date of Patent: February 20, 2018Assignee: SCREEN HOLDINGS CO., LTD.Inventors: Taiki Hinode, Takashi Ota, Naoki Fujiwara
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Patent number: 9815018Abstract: The gas separation device separates or captures a target gas component from a gas to be processed by: causing an absorbing liquid to flow down on a surface of a packing disposed inside a processing tank while supplying the gas to be processed containing the target gas component into the processing tank; bringing the absorbing liquid flowing down on the surface of the packing and the gas to be processed into gas-liquid contact; and thereby causing the absorbing liquid to absorb the target gas component contained in the gas to be processed. The packing includes at least one packing unit formed from multiple expanded metal plates, which are disposed vertically and arranged in parallel. Each expanded metal plate includes strands forming the openings which are arranged like stairs. Each strand is inclined to the vertical direction at an angle in a range from 48° to 73°.Type: GrantFiled: January 20, 2015Date of Patent: November 14, 2017Assignee: IHI CorporationInventors: Jian Huang, Yoshiyuki Iso, Mariko Katou, Shinsuke Matsuno, Kenji Takano, Naoki Fujiwara, Atsushi Murakami
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Patent number: 9712081Abstract: A power converter includes inverters, AC sides of the inverters being connected in parallel, and a controller configured to control total output power of the inverters by controlling output power of at least one of the inverters in a control cycle shorter than a shortest communication cycle which allows communication with each of the inverters.Type: GrantFiled: September 30, 2014Date of Patent: July 18, 2017Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATIONInventors: Tsuguhiro Tanaka, Naoki Fujiwara
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Publication number: 20170160130Abstract: To improve light use efficiency and thereby achieve even higher sampling rates. An optical measurement device includes: a light source configured to emit illumination light including a plurality of wavelength components; an optical system configured to introduce an axial chromatic aberration into the illumination light from the light source and to receive reflection light reflecting from a measurement object where at least a portion of the measurement object lies along a line extending from the optical axis of the optical system; a spectrometer for separating the reflection light received at the optical system into wavelength components, and a detector including a plurality of light receiving elements arranged one-dimensionally to correspond to the dispersion direction of the spectrometer.Type: ApplicationFiled: November 29, 2016Publication date: June 8, 2017Applicant: OMRON CorporationInventors: Hisayasu MORINO, Jun TAKASHIMA, Kenichi MATOBA, Masayuki HAYAKAWA, Naoki FUJIWARA, Mariko MARUKAWA
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Patent number: 9656967Abstract: A production method of the present invention is a method for producing a halohydantoin compound in which method a composition including a halohydantoin compound and an impurity is treated, the method including the step of adding the composition to a mixed solvent of water and an organic solvent and washing the composition.Type: GrantFiled: November 15, 2013Date of Patent: May 23, 2017Assignee: NIPPOH CHEMICALS CO., LTD.Inventors: Naoki Fujiwara, Keisuke Takahashi
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Publication number: 20170119030Abstract: The present invention relates to frozen liquid egg whites in which are admixed 0.01-0.4 parts of egg yolks for every 100 parts of egg whites, wherein 0.1-2 parts inclusive of ?-cyclodextrin are added for every 100 parts of liquid egg whites, and the turbidity H1 (degrees) calculated by means of the belowmentioned formula (1) is 18 or more: H1=H2?H3 . . . (1). Here, H2 indicates the turbidity (degrees) of the frozen liquid egg whites measured immediately after being defrosted, and H3 indicates the egg-derived turbidity y (degrees) calculated by means of the belowmentioned approximation formula (2): y=?380.75x2+272.42x+17.257 . . . (2). Here, x indicates the admixed amount (parts) of egg yolks for every 100 parts of liquid egg whites.Type: ApplicationFiled: May 29, 2015Publication date: May 4, 2017Inventors: Naoki Fujiwara, Noriaki Nishijima, Ryou Sasahara, Hideaki Kobayashi, Asao Ito
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Patent number: 9611344Abstract: The present invention provides a vinyl alcohol polymer having a mercapto group and having excellent reactivity.Type: GrantFiled: December 25, 2012Date of Patent: April 4, 2017Assignee: KURARAY CO., LTD.Inventors: Takuma Kaneshima, Yusuke Amano, Keisuke Morikawa, Naoki Fujiwara, Kensuke Nagashima, Katsuji Ujita
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Publication number: 20170014797Abstract: A method of manufacturing packing includes: determining types of a gas and a liquid which are brought into gas-liquid contact and a main plate to be used; calculating a relationship between a contact angle and a liquid film length ratio; determining the arrangement (intervals) of a rib; determining rib conditions; calculating the minimum value of the flow direction length of the rib satisfying the contact angle and a strength requirement; confirming whether or not a liquid film length is greater than the minimum value; and determining the flow direction length of the rib within a range from the minimum value to the liquid film length.Type: ApplicationFiled: September 28, 2016Publication date: January 19, 2017Applicant: IHI CorporationInventors: Yoshiyuki ISO, Jian HUANG, Mariko SAGA, Shinsuke MATSUNO, Hiroyuki UCHIDA, Naoki FUJIWARA, Kenji TAKANO, Kenji TOKUDA
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Publication number: 20160300727Abstract: A substrate processing apparatus includes a phosphoric acid supply device for supplying phosphoric acid aqueous solution onto the upper surface of a substrate held on a spin chuck, a heater for emitting heat toward a portion of the upper surface of the substrate with the phosphoric acid aqueous solution being held on the substrate, a heater moving device for moving the heater to move a position heated by the heater within the upper surface of the substrate, a water nozzle for discharging water therethrough toward a portion of the upper surface of the substrate with the phosphoric acid aqueous solution being held on the substrate and a water nozzle moving device for moving the water nozzle to move the water landing position within the upper surface of the substrate.Type: ApplicationFiled: June 22, 2016Publication date: October 13, 2016Inventors: Taiki HINODE, Takashi OTA, Naoki FUJIWARA
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Publication number: 20160168346Abstract: Provided are a modified vinyl alcohol (VA) having a reduced water content to exhibit a practically-required form stability, a producing method for the same, and an ion exchange membrane. (1) A copolymer (P) including, as structural units, a vinyl alcohol monomer unit (A), a vinylene monomer unit (B), and a polymer unit (C) having a polar group other than a hydroxyl group. (2) A method for producing the copolymer (P) including: providing a copolymer (P?) including a vinyl alcohol polymer unit (A?) and a polymer unit (C) having a polar group other than a hydroxyl group, and heat-treating the copolymer (P?) under an acidic condition to form a polyene structure by dehydration so as to introduce a vinylene monomer unit (B). (3) An ion-exchange membrane containing as a main component a copolymer (PA) in which the polymer unit (C) having a polar group other than a hydroxyl group is a polymer unit (CA) having an ionic group.Type: ApplicationFiled: February 23, 2016Publication date: June 16, 2016Applicant: Kuraray Co., Ltd.Inventors: Taisuke KAMADA, Naoki FUJIWARA, Takashi WAKUI
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Publication number: 20160172864Abstract: A photovoltaic system includes power generators configured to generate power utilizing sunlight, inverters configured to convert the power generated by the power generators into alternating-current power output to a power system, a first limiter configured to limit output power of the inverters not more than a predetermined capacity, a second limiter configured to limit output power of at least one of the inverters to a level exceeding the predetermined capacity limited by the first limiter, when a predetermined condition is satisfied, and an inverter controller configured to control the output power of the inverters, based on the first limiter or the second limiter.Type: ApplicationFiled: February 25, 2016Publication date: June 16, 2016Applicant: Toshiba Mitsubishi-Electric Industrial Systems CorporationInventors: Takahiro TERAZONO, Naoki FUJIWARA, Yoshio TSUJI, Shuji TANAKA
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Publication number: 20160164083Abstract: A composite material including a carbon-containing material and a non-stoichiometric titanium compound shown by a chemical formula of Li4+xTi5?xO12, where x is in a range of 0<x<0.30, the composite material including at least one composite particle that has a core portion including the non-stoichiometric titanium compound and a mixed layer formed on a surface of the core portion, the mixed layer including non-stoichiometric titanium compound and carbon, and having an atomic ratio of titanium and carbon in a range of Ti/C=1/50 or more.Type: ApplicationFiled: December 9, 2015Publication date: June 9, 2016Applicants: Kuraray Co., Ltd., Incorporated National University Iwate UniversityInventors: Takashi WAKUI, Naoki Fujiwara, Yuhi Shimazumi, Yoshio Yamamoto, Koichi UI, Yoshihiro Kadoma
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Patent number: 9356318Abstract: An objective of the present invention is to provide a gel polymer electrolyte composition which exhibits excellent electrolyte retaining ability, excellent ion conductivity, higher mechanical strength and excellent shape preservation, which does not require an extra step for crosslinking, and which can provide a secondary battery with excellent cycle properties and a vinyl acetal polymer used for a gel polymer electrolyte composition. There are provided a vinyl acetal polymer for a gel polymer electrolyte composition, wherein the vinyl acetal polymer has a cationic functional group, as well as a gel polymer electrolyte composition comprising the vinyl acetal polymer and an electrolyte solution, wherein a weight ratio of the vinyl acetal polymer to the electrolyte solution is 0.5:99.5 to 9:91.Type: GrantFiled: January 13, 2011Date of Patent: May 31, 2016Assignee: KURARAY CO., LTD.Inventors: Junji Fujioka, Naoki Fujiwara
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Patent number: 9321047Abstract: There is provided an anion exchange membrane comprising, as a main element, a block copolymer having a vinyl alcohol polymer block and a cationic-group containing polymer block as components and which is subjected to a crosslinking treatment. An anion exchange membrane is produced by heating a film obtained from a solution of the block copolymer at a temperature of 100° C. or more, crosslinking the film with a dialdehyde compound in water, an alcohol or a mixture of these under an acidic condition and then washing the film with water. Thus, there can be provided an anion exchange membrane in which organic fouling can be prevented and which exhibiting excellent basic properties such as a membrane resistance and an ionic transport number and excellent membrane strength.Type: GrantFiled: March 18, 2014Date of Patent: April 26, 2016Assignee: KURARAY CO., LTD.Inventors: Atsushi Jikihara, Kenichi Kobayashi, Naoki Fujiwara
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Publication number: 20160087727Abstract: An optical modulator driver circuit (1) includes an amplifier (50, Q10, Q11, R10-R13), and a current amount adjustment circuit (51) capable of adjusting a current amount of the amplifier (50) in accordance with a desired operation mode. The current amount adjustment circuit (51) includes at least two current sources (IS10) that are individually ON/OFF-controllable in accordance with a binary control signal representing the desired operation mode.Type: ApplicationFiled: May 9, 2014Publication date: March 24, 2016Inventors: Munehiko Nagatani, Hideyuki Nosaka, Toshihiro Itoh, Koichi Murata, Hiroyuki Fukuyama, Takashi Saida, Shin Kamei, Hiroshi Yamazaki, Nobuhiro Kikuchi, Hiroshi Koizumi, Masafumi Nogawa, Hiroaki Katsurai, Hiroyuki Uzawa, Tomoyoshi Kataoka, Naoki Fujiwara, Hiroto Kawakami, Kengo Horikoshi, Yves Bouvier, Mikio Yoneyama, Shigeki Aisawa, Masahiro Suzuki
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Patent number: 9276262Abstract: There are provided a battery electrode wherein an active material layer is formed on a collector surface, and the layer contains an active material and a block copolymer having a vinyl alcohol polymer block; and a lithium ion secondary battery having a laminate structure in which a pair of electrodes having an active material layer are disposed in such a manner that the active material layers face each other via a separator, and an electrolyte composition containing a lithium-containing electrolyte salt fills the gaps between the pair of electrodes and the separator, wherein at least one of the pair of electrodes is the above battery electrode. Thus, there can be provided a lithium ion secondary battery which can be easily produced and be less polarized, exhibiting excellent charge/discharge properties and cycle characteristics.Type: GrantFiled: March 21, 2012Date of Patent: March 1, 2016Assignees: TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION ADMINISTRATIVE ORGANIZATION, KURARAY CO., LTD.Inventors: Shinichi Komaba, Naoaki Yabuuchi, Kyomi Tajima, Junji Fujioka, Naoki Fujiwara
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Patent number: 9266069Abstract: There is provided an ion-exchange membrane comprising an ion-exchange layer made of a cationic polymer and/or an anionic polymer and a supporting layer, wherein the ion-exchange layer is formed on the supporting layer by printing. Such an ion-exchange membrane exhibits excellent anti-organic fouling and low membrane resistance, thereby high efficient and long-time stable electrodialysis can be achieved. Formation of the ion-exchange layer as a charge-mosaic layer consisting of the cationic polymer domains and the anionic polymer domains provides a charge-mosaic membrane exhibiting excellent electrolyte permselectivity and mechanical strength.Type: GrantFiled: April 13, 2010Date of Patent: February 23, 2016Assignees: YAMAGUCHI UNIVERSITY, KURARAY CO., LTD.Inventors: Mitsuru Higa, Atsushi Jikihara, Kenichi Kobayashi, Naoki Fujiwara