Patents by Inventor Syu Nakanishi
Syu Nakanishi 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: 20230325109Abstract: A memory system includes a first non-volatile memory and a control circuit. The first non-volatile memory operates in one of a plurality of operation modes including at least a first operation mode and a second operation mode. The control circuit switches the operation mode of the first non-volatile memory based on an operation mode switching information received from an external device.Type: ApplicationFiled: August 30, 2022Publication date: October 12, 2023Inventors: Ryuichi KITAJIMA, Masahiko NAKASHIMA, Syu NAKANISHI
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Patent number: 10416673Abstract: A vacuum cleaner capable of smoothly traveling along an obstacle. A control unit has modes of travel control and directional change control. In the travel control, while a distance between a main casing and a sideward obstacle detected by a distance measuring sensor is kept within a specified distance range, a motor is driven so as to make the main casing travel along the obstacle. In the directional change control, when an obstacle forward of the main casing is detected by a contact sensor during the travel control, the motor is driven so as to make the main casing change in advancing direction along the detected forward obstacle. The directional change control includes at least swing control for driving the motor so as to make the main casing swing to a specified swing angle while disregarding a distance detected by the distance measuring sensor.Type: GrantFiled: August 21, 2015Date of Patent: September 17, 2019Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATIONInventor: Syu Nakanishi
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Publication number: 20170235309Abstract: A vacuum cleaner capable of smoothly traveling along an obstacle. A control unit has modes of travel control and directional change control. In the travel control, while a distance between a main casing and a sideward obstacle detected by a distance measuring sensor is kept within a specified distance range, a motor is driven so as to make the main casing travel along the obstacle. In the directional change control, when an obstacle forward of the main casing is detected by a contact sensor during the travel control, the motor is driven so as to make the main casing change in advancing direction along the detected forward obstacle. The directional change control includes at least swing control for driving the motor so as to make the main casing swing to a specified swing angle while disregarding a distance detected by the distance measuring sensor.Type: ApplicationFiled: August 21, 2015Publication date: August 17, 2017Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATIONInventor: Syu NAKANISHI
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Patent number: 9260325Abstract: It is an object of the present invention to provide an electrical deionization apparatus having a novel constitution with excellent deionization efficiency. As means for solving this problem, according to one embodiment of the present invention, there is provided an electrical deionization apparatus having deionization compartments, concentration compartments and electrode compartments partitioned from one another by a plurality of ion exchange membranes between a cathode and an anode, wherein, in the deionization compartments and/or the concentration compartments and/or the electrode compartments, at least one of anion exchange fibrous material layers and cation exchange fibrous material layers are disposed on one another intersecting a water-passing direction.Type: GrantFiled: March 17, 2015Date of Patent: February 16, 2016Assignee: SWING CORPORATIONInventors: Yohei Takahashi, Syu Nakanishi
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Publication number: 20150218019Abstract: It is an object of the present invention to provide an electrical deionization apparatus having a novel constitution with excellent deionization efficiency. As means for solving this problem, according to one embodiment of the present invention, there is provided an electrical deionization apparatus having deionization compartments, concentration compartments and electrode compartments partitioned from one another by a plurality of ion exchange membranes between a cathode and an anode, wherein, in the deionization compartments and/or the concentration compartments and/or the electrode compartments, at least one of anion exchange fibrous material layers and cation exchange fibrous material layers are disposed on one another intersecting a water-passing direction.Type: ApplicationFiled: March 17, 2015Publication date: August 6, 2015Applicant: SWING CORPORATIONInventors: Yohei TAKAHASHI, Syu NAKANISHI
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Patent number: 9011664Abstract: It is an object of the present invention to provide an electrical deionization apparatus having a novel constitution with excellent deionization efficiency. As means for solving this problem, according to one embodiment of the present invention, there is provided an electrical deionization apparatus having deionization compartments, concentration compartments and electrode compartments partitioned from one another by a plurality of ion exchange membranes between a cathode and an anode, wherein, in the deionization compartments and/or the concentration compartments and/or the electrode compartments, at least one of anion exchange fibrous material layers and cation exchange fibrous material layers are disposed on one another intersecting a water-passing direction.Type: GrantFiled: December 26, 2003Date of Patent: April 21, 2015Assignee: Swing CorporationInventors: Yohei Takahashi, Syu Nakanishi
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Publication number: 20060091013Abstract: It is an object of the present invention to provide an electrical deionization apparatus having a novel constitution with excellent deionization efficiency. As means for solving this problem, according to one embodiment of the present invention, there is provided an electrical deionization apparatus having deionization compartments, concentration compartments and electrode compartments partitioned from one another by a plurality of ion exchange membranes between a cathode and an anode, wherein, in the deionization compartments and/or the concentration compartments and/or the electrode compartments, at least one of anion exchange fibrous material layers and cation exchange fibrous material layers are disposed on one another intersecting a water-passing direction.Type: ApplicationFiled: December 26, 2003Publication date: May 4, 2006Applicant: EBARA CORPORATIONInventors: Yohei Takahashi, Syu Nakanishi
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Publication number: 20040238350Abstract: The present invention provides ion exchangers for an electrical deionization apparatus that can be operated at low voltages by preventing voltage buildup in the electrical deionization apparatus, and an electrical deionization apparatus incorporating said ion exchangers. The present invention provides an ion exchanger for an electrical deionization apparatus, which is to be used as an ion exchanger placed in at least one of a deionization compartment and/or concentration compartment and, which at least partially has a plurality of different functional groups, or which has a graft chain having an ion exchange group on the backbone of an organic polymer substrate and further has a second graft chain on said graft chain, or which has a crosslinked graft chain having an ion exchange group on the backbone of an organic polymer substrate.Type: ApplicationFiled: January 27, 2004Publication date: December 2, 2004Inventors: Yohei Takahashi, Kunio Fujiwara, Takayoshi Kawamoto, Syu Nakanishi, Toru Akiyama
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Publication number: 20040188258Abstract: The object of the present invention is to provide an electrical deionization apparatus capable of long-term operation at a low voltage. To achieve this object, the present invention is directed to an electrical deionization apparatus based on a completely new compartment configuration and provides an electrical deionization apparatus comprising multiple compartments separated by cation- and anion-exchange membranes arranged between anode and cathode, wherein the anion-exchange membrane on the anode side and the cation-exchange membrane on the cathode side together define a water splitting compartment, and wherein an anion deionization compartment defined between anion-exchange membranes is placed on the anode side of the water splitting compartment, and a cation deionization compartment defined between cation-exchange membranes is placed on the cathode side of the water splitting compartment.Type: ApplicationFiled: January 21, 2004Publication date: September 30, 2004Inventors: Yohei Takahashi, Kunio Fujiwara, Takayoshi Kawamoto, Syu Nakanishi, Toru Akiyama, Masaji Akahori, Jun Aoyama
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Patent number: 6686751Abstract: The present invention provide a method and an apparatus for detecting anions in water which does not require replacement of ion exchange resins and the like and can perform precise measurement at low cost in a simple operation.Type: GrantFiled: September 21, 2001Date of Patent: February 3, 2004Assignee: Ebara CorporationInventors: Takayuki Saito, Syu Nakanishi, Kanroku Chounan
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Patent number: 6423205Abstract: The object of this invention is to provide an electrical deionization apparatus with which various feed water types ranging from water of high ion concentration to water of low ion concentration can be consistently deionized with high efficiency. At least part of cation-exchange membranes and anion-exchange membranes alternate between electrodes to form an alternating array of deionization and concentration compartments and the deionization compartment contains a woven or non-woven fabric made of cation-exchange fiber that is placed on the cation-exchange membrane side in a face-to-face relationship with a woven or non-woven fabric made of anion-exchange fiber that is placed on the anion-exchange membrane side, with the passageway of feed water between the two woven or non-woven fabrics containing an ion-conducting spacer provided with an ion-exchanging capability.Type: GrantFiled: October 27, 2000Date of Patent: July 23, 2002Assignee: Ebara CorporationInventors: Masaji Akahori, Takayoshi Kawamoto, Syu Nakanishi, Shinzi Miura, Toru Akiyama, Takayuki Saito, Kunio Fujiwara, Satoshi Konishi
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Patent number: 5837124Abstract: A method for preventing scale from precipitating and an apparatus for producing deionized water are disclosed. The acidic water produced by electrolysis in the electrolysis unit (30) is introduced into a concentrating compartment (19) in the continuous deionization unit (10). The pH of the concentrated water in the concentrating compartment decreases, thereby preventing scale from precipitating.Type: GrantFiled: October 29, 1997Date of Patent: November 17, 1998Assignee: Ebara CorporationInventors: Qingquan Su, Syu Nakanishi, Takayuki Saito, Masato Nakatsu
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Patent number: 5788828Abstract: An improved apparatus for detecting anions in water includes an electrical continuous ion-exchange unit comprising an anode compartment and a cathode compartment which are spaced apart by an alkali removing compartment packed with a cation exchanger defined by two cation-exchange membranes. Each of the said anode compartment, cathode compartment and alkali removing compartment is provided with a passageway through which water is admitted and a passageway through which the treated water is discharged. The passageway through which the treated water is discharged from the alkali removing compartment is equipped with an instrument for measuring the specific resistance or electrical conductivity of the treated water.Type: GrantFiled: November 29, 1996Date of Patent: August 4, 1998Assignee: Ebara CorporationInventors: Masato Nakatsu, Syu Nakanishi, Akira Fukunaga, Takayuki Saito, Kanroku Chounan
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Patent number: 5738775Abstract: Electrically regenerable desalting apparatus having the desalting compartment packed with ion exchangers produced by utilizing radiation-initiated graft polymerization, in which said ion exchangers are nonwoven fabrics in the form of a fiber assembly and a cation exchanger and an anion exchanger are disposed in a face-to-face relationship, with a porous material being interposed between the two ion exchangers. Having the ability to reject ions from liquids, the apparatus is particularly suited to the production of pure water in the electrical power generating industries (including the nuclear industry), electronic industry and the pharmaceuticals manufacturing industry, as well as to the desalting of thick fluids encountered in food and chemical manufacturing processes.Type: GrantFiled: June 6, 1997Date of Patent: April 14, 1998Assignees: Ebara Corporation, Japan Atomic Energy Research InstituteInventors: Hiroshi Nagai, Syu Nakanishi, Kunio Fujiwara, Takanobu Sugo