Patents by Inventor Tohru Nishimura
Tohru Nishimura 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: 20240118170Abstract: A vibration monitoring device includes: a rotation sensor for outputting a rotation signal synchronized with rotation of a rotational shaft; an output device for outputting a filter command value corresponding to a rotation speed of the rotational shaft calculated from the rotation signal; and at least one filter for extracting, in response to input of the rotation signal and the filter command value, a signal in a passband set according to the filter command value from the rotation signal as a vibration signal from which vibration information of the rotational shaft can be obtained.Type: ApplicationFiled: February 15, 2022Publication date: April 11, 2024Applicant: Mitsubishi Heavy Industries Marine Machinery & Equipment Co., Ltd.Inventors: Tadashi Yoshida, Hidetaka Nishimura, Akifumi Tanaka, Shinji Ogawa, Isao Tomita, Tohru Suita, Ryoji Sasaki
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Patent number: 11955097Abstract: A shift register includes stages each constituted by a unit circuit provided with a thin-film transistor (separation transistor) that separates a control node into an output-side first control node and an input-side second control node and a capacitor whose first end is connected to the second control node. The thin-film transistor (separation transistor) has a control terminal that is supplied with a high-level DC power supply voltage. Typically, the channel width of a thin-film transistor (first output control transistor) that controls output from a unit circuit is ten or more times greater than the channel width of the thin-film transistor (separation transistor).Type: GrantFiled: December 5, 2022Date of Patent: April 9, 2024Assignee: Sharp Display Technology CorporationInventors: Jun Nishimura, Yoshihito Hara, Yohei Takeuchi, Kengo Hara, Tohru Daitoh
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Publication number: 20240112646Abstract: A set circuit in a unit circuit in a gate driver of a display device includes a setting transistor, a first auxiliary transistor, and a second auxiliary transistor. The setting transistor includes a source terminal connected to an internal node, a gate terminal connected to a set input terminal, and a drain terminal connected to the set input terminal via the first auxiliary transistor and also connected to an input terminal via the second auxiliary transistor in a diode-connected form. Each transistor is controlled to be in an on state and an off state during normal drive and is controlled to be in the off state and the on state during a pause period by a control signal supplied to the input terminal.Type: ApplicationFiled: August 14, 2023Publication date: April 4, 2024Inventors: Jun NISHIMURA, Kengo HARA, Yohei TAKEUCHI, Yoshihito HARA, Tohru DAITOH
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Publication number: 20220356373Abstract: A polishing composition having silica-based abrasive grains and a polishing method. A polishing composition having silica particles, wherein on the basis of a colloidal silica dispersion of the silica particles, the dispersion has an Rsp of 0.15 to 0.7 as measured using pulse NMR, and the colloidal silica particles have a shape coefficient SF1 of 1.20 to 1.80, wherein Rsp is calculated based on equation (1): Rsp=(Rav?Rb)/(Rb)??(1) (wherein Rsp is an index that indicates water affinity; Rav is an inverse of a relaxation time of the colloidal silica dispersion; and Rb is an inverse of a relaxation time of a blank aqueous solution obtained by removing the silica particles from the colloidal silica dispersion), and the shape coefficient SF1 is calculated based on equation (2): SF1=(area of a circle whose diameter is a maximum diameter of the particle)/(projected area)??(2).Type: ApplicationFiled: July 20, 2022Publication date: November 10, 2022Applicant: NISSAN CHEMICAL CORPORATIONInventors: Shigeru MITSUI, Tohru NISHIMURA, Eiichiro ISHIMIZU
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Publication number: 20220228031Abstract: A polishing composition that is for use in CMP polishing and that makes it possible to minimize the occurrence of defects. A polishing composition comprising silica particles, a basic nitrogen-containing organic compound, and water serving as a solvent, wherein the composition exhibits an Rsp value of the following Formula (1) of more than 0.7 and 6 or less as calculated from values measured by pulse NMR: Rsp=(Rav?Rb)/(Rb) . . . (1) (wherein Rsp is an index of water affinity; Rav is the reciprocal of the relaxation time of the polishing composition; and Rb is the reciprocal of the relaxation time of the water serving as a solvent of the polishing composition).Type: ApplicationFiled: June 26, 2020Publication date: July 21, 2022Applicant: NISSAN CHEMICAL CORPORATIONInventors: Shigeru MITSUI, Eiichiro ISHIMIZU, Tohru NISHIMURA, Wataru OMORI
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Publication number: 20200308448Abstract: A polishing composition having silica-based abrasive grains and a polishing method. A polishing composition having silica particles, wherein on the basis of a colloidal silica dispersion of the silica particles, the dispersion has an Rsp of 0.15 to 0.7 as measured using pulse NMR, and the colloidal silica particles have a shape coefficient SF1 of 1.20 to 1.80, wherein Rsp is calculated based on equation (1): Rsp=(Rav?Rb)/(Rb)??(1) (wherein Rsp is an index that indicates water affinity; Rav is an inverse of a relaxation time of the colloidal silica dispersion; and Rb is an inverse of a relaxation time of a blank aqueous solution obtained by removing the silica particles from the colloidal silica dispersion), and the shape coefficient SF1 is calculated based on equation (2): SF1=(area of a circle whose diameter is a maximum diameter of the particle)/(projected area)??(2).Type: ApplicationFiled: October 31, 2019Publication date: October 1, 2020Applicant: NISSAN CHEMICAL CORPORATIONInventors: Shigeru MITSUI, Tohru NISHIMURA, Eiichiro ISHIMIZU
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Patent number: 10550300Abstract: A method for producing an active silicic acid solution in which the existing amount of foreign matters as plate-like fine particles is reduced and a method for producing a silica sol in which such foreign matters are reduced. The method fulfills the following condition; the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is measured to be 0% to 30% in accordance with measuring method A, the method including the steps of: preparing an active silicic acid solution by subjecting an alkali silicate aqueous solution having a silica concentration of 0.5% by mass to 10.0% by mass to cation-exchange to remove alkaline components; and filtering the active silicic acid solution through a filter whose removal rate of particles having a primary particle size of 1.0 ?m is 50% or more.Type: GrantFiled: July 8, 2016Date of Patent: February 4, 2020Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Naoki Kawashita, Kouji Yamaguchi
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Patent number: 10400147Abstract: A method for producing an active silicic acid solution in which the existing amount of foreign matters as plate-like fine particles is reduced and a method for producing a silica sol in which such foreign matters are reduced. The method fulfills the following condition: the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is measured to be 0% to 30% in accordance with measuring method A, the method including the steps of: preparing an active silicic acid solution by subjecting an alkali silicate aqueous solution having a silica concentration of 0.5% by mass to 10.0% by mass to cation-exchange to remove alkaline components; and filtering the active silicic acid solution through a filter whose removal rate of particles having a primary particle size of 1.0 ?m is 50% or more.Type: GrantFiled: September 14, 2012Date of Patent: September 3, 2019Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Naoki Kawashita, Kouji Yamaguchi
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Patent number: 9938155Abstract: To provide a method for producing an alkali silicate aqueous solution containing a reduced amount of foreign substance of plate-like fine particles and a method for producing a silica sol containing a reduced amount of foreign substance of plate-like fine particles. A method for producing an alkali silicate aqueous solution fulfilling the following condition: the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is determined to be 0 to 30%. The method for producing an alkali silicate aqueous solution includes the steps of adjusting a silica concentration of an alkali silicate aqueous solution to 0.5 to 10.0% by mass and filtering the alkali silicate aqueous solution through a filter having a removal rate of particles with a primary particle size of 1.0 ?m of 50% or more.Type: GrantFiled: April 20, 2015Date of Patent: April 10, 2018Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Naoki Kawashita, Kouji Yamaguchi
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Publication number: 20160319173Abstract: A method for producing an active silicic acid solution in which the existing amount of foreign matters as plate-like fine particles is reduced and a method for producing a silica sol in which such foreign matters are reduced. The method fulfills the following condition; the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is measured to be 0% to 30% in accordance with measuring method A, the method including the steps of: preparing an active silicic acid solution by subjecting an alkali silicate aqueous solution having a silica concentration of 0.5% by mass to 10.0% by mass to cation-exchange to remove alkaline components; and filtering the active silicic acid solution through a filter whose removal rate of particles having a primary particle size of 1.0 ?m is 50% or more.Type: ApplicationFiled: July 8, 2016Publication date: November 3, 2016Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kiyomi EMA, Noriyuki TAKAKUMA, Tohru NISHIMURA, Naoki KAWASHITA, Kouji YAMAGUCHI
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Patent number: 9108855Abstract: To provide a method for producing an alkali silicate aqueous solution containing a reduced amount of foreign substance of plate-like fine particles and a method for producing a silica sol containing a reduced amount of foreign substance of plate-like fine particles. A method for producing an alkali silicate aqueous solution fulfilling the following condition: the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is determined to be 0 to 30%. The method for producing an alkali silicate aqueous solution includes the steps of adjusting a silica concentration of an alkali silicate aqueous solution to 0.5 to 10.0% by mass and filtering the alkali silicate aqueous solution through a filter having a removal rate of particles with a primary particle size of 1.0 ?m of 50% or more.Type: GrantFiled: September 5, 2012Date of Patent: August 18, 2015Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Naoki Kawashita, Kouji Yamaguchi
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Publication number: 20150225248Abstract: To provide a method for producing an alkali silicate aqueous solution containing a reduced amount of foreign substance of plate-like fine particles and a method for producing a silica sol containing a reduced amount of foreign substance of plate-like fine particles. A method for producing an alkali silicate aqueous solution fulfilling the following condition: the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is determined to be 0 to 30%. The method for producing an alkali silicate aqueous solution includes the steps of adjusting a silica concentration of an alkali silicate aqueous solution to 0.5 to 10.0% by mass and filtering the alkali silicate aqueous solution through a filter having a removal rate of particles with a primary particle size of 1.0 ?m of 50% or more.Type: ApplicationFiled: April 20, 2015Publication date: August 13, 2015Inventors: Kiyomi EMA, Noriyuki TAKAKUMA, Tohru NISHIMURA, Naoki KAWASHITA, Kouji YAMAGUCHI
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Publication number: 20130092871Abstract: A silicon carbide substrate polishing composition for polishing a surface of a silicon carbide substrate contains water and colloidal silica particles having a true specific gravity of 2.10 to 2.30, and has a free alkali metal ion concentration of 1 ppm to 150 ppm.Type: ApplicationFiled: June 21, 2011Publication date: April 18, 2013Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kazutoshi Sekiguchi, Tohru Nishimura
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Publication number: 20130075651Abstract: A method for producing an active silicic acid solution in which the existing amount of foreign matters as plate-like fine particles is reduced and a method for producing a silica sol in which such foreign matters are reduced. The method fulfills the following condition: the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is measured to be 0% to 30% in accordance with measuring method A, the method including the steps of: preparing an active silicic acid solution by subjecting an alkali silicate aqueous solution having a silica concentration of 0.5% by mass to 10.0% by mass to cation-exchange to remove alkaline components; and filtering the active silicic acid solution through a filter whose removal rate of particles having a primary particle size of 1.0 ?m is 50% or more.Type: ApplicationFiled: September 14, 2012Publication date: March 28, 2013Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kiyomi EMA, Noriyuki TAKAKUMA, Tohru NISHIMURA, Naoki KAWASHITA, Kouji YAMAGUCHI
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Publication number: 20130055646Abstract: To provide a method for producing an alkali silicate aqueous solution containing a reduced amount of foreign substance of plate-like fine particles and a method for producing a silica sol containing a reduced amount of foreign substance of plate-like fine particles. A method for producing an alkali silicate aqueous solution fulfilling the following condition: the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is determined to be 0 to 30%. The method for producing an alkali silicate aqueous solution includes the steps of adjusting a silica concentration of an alkali silicate aqueous solution to 0.5 to 10.0% by mass and filtering the alkali silicate aqueous solution through a filter having a removal rate of particles with a primary particle size of 1.0 ?m of 50% or more.Type: ApplicationFiled: September 5, 2012Publication date: March 7, 2013Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Kiyomi EMA, Noriyuki TAKAKUMA, Tohru NISHIMURA, Naoki KAWASHITA, Kouji YAMAGUCHI
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Publication number: 20120268685Abstract: A liquid crystal display device 100 includes a liquid crystal panel 12, a backlight device 14, a first housing 16, and a second housing 18. The backlight device 14 is located to face a rear surface of the liquid crystal panel 12. The first housing 16 supports the liquid crystal panel 12 and has a peripheral portion 22 extending along a periphery of the liquid crystal panel 12. The second housing 18 accommodates the backlight device 14, and has a peripheral portion 24 overlapping an inner surface of the peripheral portion 22 of the first housing 16. An attachment hole 26 is formed in the peripheral portion 24 of the second housing 18. At the peripheral portion 22 of the first housing 16, an attachment piece 28 overlapping, and joined to, an inner surface of the peripheral portion 24 of the second housing 18 through the attachment hole 26 in the peripheral portion 24 of the second housing 18 is provided.Type: ApplicationFiled: October 14, 2010Publication date: October 25, 2012Applicant: SHARP KABUSHIKI KAISHAInventor: Tohru Nishimura
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Patent number: 7887714Abstract: There is provided an abrasive used for polishing a substrate which comprises silica as a main component, for example a rock crystal, a quartz glass for photomask, for CMP of an organic film, Inter Layer Dielectric (ILD) and shallow trench isolation of a semiconductor device, or for polishing a hard disk made of glass. A sol which particles are dispersed in a medium, wherein the particles have a particle size of 0.005 to 1 ?m and comprise as a main component crystalline cerium oxide of the cubic system and as an additional component a lanthanum compound, a neodymium compound or a combination thereof, wherein the additional component is contained in X/(Ce+X) molar ratio of 0.001 to 0.5 in which X is lanthanum atoms, neodymium atoms or a combination thereof.Type: GrantFiled: December 17, 2001Date of Patent: February 15, 2011Assignee: Nissan Chemical Industries, Ltd.Inventors: Isao Ota, Kenji Tanimoto, Tohru Nishimura
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Patent number: 7578862Abstract: The present invention provides an abrasive compound suitable for polishing the surface of a glass substrate for an optical disk platter or a magnetic disk platter. More specifically, the present invention provides an abrasive compound for a glass hard disk platter, characterized as comprising a stable slurry having water and, dispersed therein as an abrasive, cerium(IV) oxide particles having an average secondary particle size of 0.1 to 0.5 ?m and containing CeO2 in a concentration of 0.2 to 30 wt %. Preferably, the present invention provides the above abrasive compound in which cerium amounts for 95% or more in terms of oxides of the total amount of rare earth elements in the abrasive.Type: GrantFiled: October 6, 2003Date of Patent: August 25, 2009Assignee: Nissan Chemical Industries, Ltd.Inventors: Isao Ota, Tohru Nishimura, Kenji Tanimoto
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Patent number: 6887289Abstract: There is provided an abrasive used for polishing a substrate which comprises silica as a main component, for example a rock crystal, a quartz glass for photomask, for CMP of an organic film, Inter Layer Dielectric (ILD) and shallow trench isolation of a semiconductor device, or for polishing a hard disk made of glass. A sol which particles are dispersed in a medium, wherein the particles have a particle size of 0.005 to 1 ?m and comprise as a main component crystalline cerium oxide of the cubic system and as an additional component a lanthanum compound, a neodymium compound or a combination thereof, wherein the additional component is contained in X/(Ce+X) molar ratio of 0.001 to 0.5 in which X is lanthanum atoms, neodymium atoms or a combination thereof.Type: GrantFiled: February 19, 2004Date of Patent: May 3, 2005Assignee: Nissan Chemical Industries, Ltd.Inventors: Isao Ota, Kenji Tanimoto, Tohru Nishimura
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Publication number: 20040223898Abstract: There is provided an abrasive used for polishing a substrate which comprises silica as a main component, for example a rock crystal, a quartz glass for photomask, for CMP of an organic film, Inter Layer Dielectric (ILD) and shallow trench isolation of a semiconductor device, or for polishing a hard disk made of glass.Type: ApplicationFiled: February 19, 2004Publication date: November 11, 2004Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Isao Ota, Kenji Tanimoto, Tohru Nishimura