Patents by Inventor Maiko Asai
Maiko Asai 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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Patent number: 10920104Abstract: Provided are an abrasive, a polishing composition, and a polishing method capable of polishing the surface of an alloy or metal oxide at a sufficient polishing removal rate and providing a high-quality mirror surface. The abrasive contains alumina having an ?-conversion rate of 80% or more and having a 50% particle diameter, in a volume-based cumulative particle diameter distribution, of 0.15 ?m or more to 0.35 ?m or less. The polishing composition contains this abrasive and has a pH of 7 or less. These abrasive and polishing composition are used for polishing polishing objects containing at least one of an alloy and a metal oxide.Type: GrantFiled: January 27, 2017Date of Patent: February 16, 2021Assignee: FUJIMI INCORPORATEDInventors: Hitoshi Morinaga, Kazusei Tamai, Maiko Asai, Yuuichi Ito, Kyosuke Tenko, Toru Kamada
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Patent number: 10882157Abstract: To provide a polishing pad capable of sufficiently polishing, in polishing of an object to be polished having at least one of a projection portion and a recessed portion on the surface, a portion near the projection portion or the inner surface of the recessed portion of the surface of the object to be polished. The polishing pad has a piloerection portion (1) in which a plurality of fibers (12) having a length of 2 mm or more are raised on the surface of a base (11), in which the mass of the fibers (12) is 250 g/m2 or more. The polishing pad is used for polishing an object to be polished (2) containing metal, an alloy, or a metal oxide material and having at least one of a projection portion (21) and a recessed portion (22) on the surface.Type: GrantFiled: May 18, 2016Date of Patent: January 5, 2021Assignee: FUJIMI INCORPORATEDInventors: Hitoshi Morinaga, Kazusei Tamai, Muneaki Tahara, Maiko Asai, Yuuichi Ito
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Patent number: 10626297Abstract: Provided is a polishing composition that is produced at low cost and can impart high-grade mirror finishing to ceramic. The polishing composition includes abrasives, has a pH of 6.0 or more to 9.0 or less, and is used for polishing ceramic.Type: GrantFiled: November 26, 2015Date of Patent: April 21, 2020Assignee: FUJIMI INCORPORATEDInventors: Kazusei Tamai, Shingo Otsuki, Tomoya Ikedo, Shota Hishida, Hiroshi Asano, Maiko Asai, Yuuichi Ito
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Patent number: 10450651Abstract: Provided is an article having a novel surface with a texture different from conventional kinds. The article having a metal oxide-containing coating provided by the present invention comprises a substrate and a metal oxide-containing coating provided to the substrate surface. The metal oxide-containing coating has a Vickers hardness of 350 or higher, a surface roughness Ra of 300 nm or less, and a 20° gloss value of 50 or higher.Type: GrantFiled: November 27, 2013Date of Patent: October 22, 2019Assignee: FUJIMI INCORPORATEDInventors: Hitoshi Morinaga, Kazusei Tamai, Maiko Asai, Hiroaki Mizuno, Kyohei Ota
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Publication number: 20190153263Abstract: Provided are an abrasive, a polishing composition, and a polishing method capable of polishing the surface of an alloy or metal oxide at a sufficient polishing removal rate and providing a high-quality mirror surface. The abrasive contains alumina having an ?-conversion rate of 80% or more and having a 50% particle diameter, in a volume-based cumulative particle diameter distribution, of 0.15 ?m or more to 0.35 ?m or less. The polishing composition contains this abrasive and has a pH of 7 or less. These abrasive and polishing composition are used for polishing polishing objects containing at least one of an alloy and a metal oxide.Type: ApplicationFiled: January 27, 2017Publication date: May 23, 2019Applicant: FUJIMI INCORPORATEDInventors: Hitoshi MORINAGA, Kazusei TAMAI, Maiko ASAI, Yuuichi ITO, Kyosuke TENKO, Toru KAMADA
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Publication number: 20190084121Abstract: There is provided a polishing pad that ensures sufficiently performing polishing up to a part near a projection portion and an inner surface of a recessed portion in a surface of an object to be polished in polishing the object to be polished having a surface with at least one of the projection portion and the recessed portion. The polishing pad includes a napped part (1) where a plurality of fibers (12) with a length of 3 mm or more are napped on a surface of a base portion (11). A count of the fibers (12) is 10000 pieces/cm2 or more.Type: ApplicationFiled: January 27, 2017Publication date: March 21, 2019Applicant: FUJIMI INCORPORATEDInventors: Maiko ASAI, Yuuichi ITO, Kazusei TAMAI, Muneaki TAHARA
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Publication number: 20180200861Abstract: To provide a polishing pad capable of sufficiently polishing, in polishing of an object to be polished having at least one of a projection portion and a recessed portion on the surface, a portion near the projection portion or the inner surface of the recessed portion of the surface of the object to be polished. The polishing pad has a piloerection portion (1) in which a plurality of fibers (12) having a length of 2 mm or more are raised on the surface of a base (11), in which the mass of the fibers (12) is 250 g/m2 or more. The polishing pad is used for polishing an object to be polished (2) containing metal, an alloy, or a metal oxide material and having at least one of a projection portion (21) and a recessed portion (22) on the surface.Type: ApplicationFiled: May 18, 2016Publication date: July 19, 2018Applicant: FUJIMI INCORPORATEDInventors: Hitoshi MORINAGA, Kazusei TAMAI, Muneaki TAHARA, Maiko ASAI, Yuuichi ITO
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Patent number: 9994748Abstract: [Problem] An object is to provide a polishing composition which can improve smoothness of a surface of an alloy material to obtain a highly glossy surface, and can obtain a high-quality mirror surface having significantly reduced scratches or the like. [Solution] There is provided a polishing composition which is used for polishing an alloy material, and which comprises abrasive grains and an additive which does not form a complex with specific metal species and is adsorbed on a surface of the alloy to exhibit an anticorrosive effect.Type: GrantFiled: July 17, 2014Date of Patent: June 12, 2018Assignee: FUJIMI INCORPORATEDInventors: Hiroshi Asano, Maiko Asai, Hitoshi Morinaga, Kazusei Tamai
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Publication number: 20180022960Abstract: There is provided a polishing composition for use in polishing of a surface of a polishing object including at least one of an oxide of a metal or a semimetal or a composite material of oxides of one or more metals and/or semimetals, and the polishing composition includes at least water and silica. The silica includes small-particle diameter silica having a particle diameter of 20 nm or more to 70 nm or less and large-particle diameter silica having a particle diameter of 100 nm or more to 200 nm or less, 2 mass % or more of the small-particle diameter silica is included in the polishing composition, 2 mass % or more of the large-particle diameter silica is included in the polishing composition, and a value obtained by dividing an average particle diameter of the large-particle diameter silica by an average particle diameter of the small-particle diameter silica is 2 or more.Type: ApplicationFiled: February 12, 2016Publication date: January 25, 2018Applicant: FUJIMI INCORPORATEDInventors: Masayuki SERIKAWA, Kyousuke TENKOU, Tomomi AKIYAMA, Maiko ASAI
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Publication number: 20170355882Abstract: Provided is a polishing composition that is produced at low cost and can impart high-grade mirror finishing to ceramic. The polishing composition includes abrasives made of carbide, and is used for polishing ceramic.Type: ApplicationFiled: November 26, 2015Publication date: December 14, 2017Applicant: FUJIMI INCORPORATEDInventors: Shingo OTSUKI, Tomoya IKEDO, Shota HISHIDA, Hitoshi MORINAGA, Maiko ASAI, Yuuichi ITO
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Publication number: 20170355881Abstract: Provided is a polishing composition that is produced at low cost and can impart high-grade mirror finishing to ceramic. The polishing composition includes abrasives, has a pH of 6.0 or more to 9.0 or less, and is used for polishing ceramic.Type: ApplicationFiled: November 26, 2015Publication date: December 14, 2017Applicant: FUJIMI INCORPORATEDInventors: Kazusei TAMAI, Shingo OTSUKI, Tomoya IKEDO, Shota HISHIDA, Hiroshi ASANO, Maiko ASAI, Yuuichi ITO
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Publication number: 20170216993Abstract: Provided is a composition for polishing a titanium alloy material, which enables polishing of a titanium alloy material at a high polishing speed and can provide a polished titanium alloy material having excellent surface smoothness and having a highly glossy surface after polishing. The composition for polishing a titanium alloy material is a composition that is intended for polishing a titanium alloy material and comprises a compound having a function of dissolving at least one metal element other than titanium, which exists at a content of more than 0.5% by mass with respect to the total mass of the titanium alloy material, at a higher degree of solubility than that of titanium; and abrasive grains.Type: ApplicationFiled: May 1, 2015Publication date: August 3, 2017Applicant: FUJIMI INCORPORATEDInventors: Maiko ASAI, Kazusei TAMAI, Hitoshi MORINAGA, Hiroshi ASANO
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Publication number: 20160355930Abstract: Provided is an article having a metal oxide coating employing a novel configuration exhibiting both color and metallic luster. The article having a metal oxide coating disclosed herein is provided with a base material including a metal material and a metal oxide coating including a metal oxide coated onto the surface of the base material. The metal oxide coating is formed by polishing the surface of the base material, using particles composed of the metal oxide.Type: ApplicationFiled: December 4, 2014Publication date: December 8, 2016Applicant: FUJIMI INCORPORATEDInventors: Kazusei TAMAI, Hitoshi MORINAGA, Hiroshi ASANO, Maiko ASAI, Ryo WAKABAYASHI
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Publication number: 20160186029Abstract: [Problem] An object is to provide a polishing composition which can improve smoothness of a surface of an alloy material to obtain a highly glossy surface, and can obtain a high-quality mirror surface having significantly reduced scratches or the like. [Solution] There is provided a polishing composition which is used for polishing an alloy material, and which comprises abrasive grains and an additive which does not form a complex with specific metal species and is adsorbed on a surface of the alloy to exhibit an anticorrosive effect.Type: ApplicationFiled: July 17, 2014Publication date: June 30, 2016Applicant: FUJIMI INCORPORATEDInventors: Hiroshi ASANO, Maiko ASAI, Hitoshi MORINAGA, Kazusei TAMAI
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Publication number: 20150360340Abstract: An alloy material polishing method of the present invention is a method for polishing an alloy material containing a main component and 0.5% by mass or more of an accessory component element having a Vickers hardness (HV) different from that of the main component by 5 or more. The polishing method is characterized by polishing a surface of the alloy material using a polishing composition containing abrasive grains and an oxoacid-based oxidizing agent. The main component of the alloy material is preferably at least one selected from aluminum, titanium, iron, nickel, and copper. The main component of the alloy material is preferably aluminum, and the accessory component element is preferably at least one selected from silicon, magnesium, iron, copper, and zinc. The polishing method preferably includes preliminarily polishing the alloy material using a preliminary polishing composition before the polishing of the alloy material using the polishing composition.Type: ApplicationFiled: December 26, 2013Publication date: December 17, 2015Inventors: Kazusei TAMAI, Maiko ASAI, Hitoshi MORINAGA
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Publication number: 20150354058Abstract: Provided is an article having a novel surface with a texture different from conventional kinds. The article having a metal oxide-containing coating provided by the present invention comprises a substrate and a metal oxide-containing coating provided to the substrate surface. The metal oxide-containing coating has a Vickers hardness of 350 or higher, a surface roughness Ra of 300 nm or less, and a 20° gloss value of 50 or higher.Type: ApplicationFiled: November 27, 2013Publication date: December 10, 2015Applicant: FUJIMI INCORPORATEDInventors: Hitoshi MORINAGA, Kazusei TAMAI, Maiko ASAI, Hiroaki MIZUNO, Kyohei OTA
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Publication number: 20150291850Abstract: Provided is a polishing composition with which a high glossy surface is achieved by enhancing smoothness of a surface of an alloy material while maintaining a sufficiently high polishing speed for the alloy material. The present invention relates to a polishing composition used for an application of polishing an alloy material, which contains silica particles having a primary particle average aspect ratio of at least 1.10 and a pH controlling agent.Type: ApplicationFiled: June 25, 2013Publication date: October 15, 2015Applicant: FUJIMI INCORPORATEDInventors: Kazusei Tamai, Maiko Asai, Hitoshi Morinaga
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Publication number: 20150291851Abstract: A polishing composition which is able to decrease a difference in polishing rate between the alloy material and the resin, and to polish both the alloy material and the resin at a high polishing rate when polishing a substrate which contains an alloy material and a resin on the surface and has a ratio of the alloy material area to the total polishing area in a specific range is provided. To provide the polishing composition used to polish a substrate which contains an alloy material and a resin on a surface thereof and has a ratio of an alloy material area to a total polishing area of from 60 to 95%, the polishing composition containing crystalline abrasive grains having a cumulative 50% particle size (D50) based on a volume-based particle size distribution of 5.0 ?m or more, an acid or a salt thereof and a water-soluble polymer.Type: ApplicationFiled: April 14, 2015Publication date: October 15, 2015Applicant: FUJIMI INCORPORATEDInventors: Hiroshi ASANO, Maiko ASAI, Hitoshi MORINAGA, Kazusei TAMAI
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Publication number: 20150251293Abstract: The polishing method polishes an alloy material using a polishing pad and a polishing composition supplied to the polishing pad. The polishing composition contains an abrasive of silica or alumina, and a surface temperature of the polishing pad at the end of polishing is 20° C. or below. The method for producing an alloy material comprises a polishing step of polishing an alloy material using a polishing pad and a polishing composition supplied to the polishing pad. The polishing composition contains an abrasive of silica or alumina, and a surface temperature of the polishing pad at the end of polishing is 20° C. or below.Type: ApplicationFiled: October 1, 2013Publication date: September 10, 2015Applicant: FUJIMI INCORPORATEDInventors: Hitoshi Morinaga, Kazusei Tamai, Yutaka Niwano, Maiko Asai
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Publication number: 20150166862Abstract: Provided is a metal alloy material polishing composition used for polishing a metal alloy material. The metal alloy material contains a first metal species as a main component and a second metal species that is of a different kind from the first metal species and has a standard electrode potential higher than that of the first metal species. The metal alloy material polishing composition contains a compound having a functional group bonded to carbon and capable of trapping the second metal species.Type: ApplicationFiled: July 16, 2013Publication date: June 18, 2015Applicant: FUJIMI INCORPORATEDInventors: Hitoshi Morinaga, Kazusei Tamai, Maiko Asai