Patents by Inventor Takeaki Kitamura
Takeaki Kitamura 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: 10544309Abstract: A bright pigment of the present invention is a bright pigment including flaky particles and a metal oxide layer covering each surface of the flaky particles. The metal oxide layer has a thickness variation coefficient (standard deviation of thickness of the metal oxide layer/average thickness of the metal oxide layer) of 20% or less. The bright pigment preferably contains a sodium component, and the sodium component is Na2O. The content of Na2O in the flaky particles is 3% by mass or more and less than 9.5% by mass. The bright pigment preferably has a specific surface area of 5.0 m2/g or less.Type: GrantFiled: December 7, 2012Date of Patent: January 28, 2020Assignee: Nippon Sheet Glass Company, LimitedInventor: Takeaki Kitamura
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Patent number: 9683105Abstract: A bright pigment of the present invention is a bright pigment including flaky particles and a metal oxide layer covering each surface of the flaky particles. The bright pigment has a particle diameter corresponding to a 90% volume-cumulative particle diameter from a small particle diameter side, in a particle size distribution, of 55 ?m or less. The flaky particles are formed of a material having a refractive index of 1.4 to 1.8. The flaky particles have an average thickness of 0.35 to 0.55 ?m and substantially do not contain flaky particles having a thickness of 0.15 ?m or less.Type: GrantFiled: December 7, 2012Date of Patent: June 20, 2017Assignee: Nippon Sheet Glass Company, LimitedInventor: Takeaki Kitamura
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Patent number: 9107834Abstract: The bright pigment of the present invention contains a scaly substrate 10 and an outermost coating 20 that covers the scaly substrate 10, that is provided as an outermost layer, and that contains at least one member selected from the group consisting of hydroxyapatite and hydrocalumite. The bright pigment of the present invention may be further provided with an interference color coating that is disposed more towards the center than the outermost coating and that contains at least one metal oxide selected from the group consisting of titanium oxide and iron oxide. Moreover, the bright pigment of the present invention may be further provided with a silver-containing coating that is disposed more towards the center than the outermost coating and that contains silver and/or a silver alloy. The outermost coating may contain an anionic pigment.Type: GrantFiled: April 18, 2008Date of Patent: August 18, 2015Assignee: Nippon Sheet Glass Company, LimitedInventor: Takeaki Kitamura
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Patent number: 9045643Abstract: A bright pigment of the present invention includes a scaly inorganic base 10, a silver-containing coating 11 that covers the inorganic base 10 and contains silver or a silver alloy, and a yellowing-suppressing coating 2 that covers the inorganic base 10 from outside of the silver-containing coating 11 and contains a metal compound functioning as an oxidizing agent. The metal compound is preferably at least one selected from the group consisting of a hydroxide of metal, an oxide hydrate of metal, and a salt of an oxide hydrate of metal, and the metal is at least one selected from the group consisting of tungsten, molybdenum, bismuth, vanadium, or cerium.Type: GrantFiled: April 23, 2007Date of Patent: June 2, 2015Assignee: Nippon Sheet Glass Company LimitedInventors: Takeaki Kitamura, Yusuke Kimura
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Publication number: 20140349009Abstract: A bright pigment of the present invention is a bright pigment including flaky particles and a metal oxide layer covering each surface of the flaky particles. The metal oxide layer has a thickness variation coefficient (standard deviation of thickness of the metal oxide layer/average thickness of the metal oxide layer) of 20% or less. The bright pigment preferably contains a sodium component, and the sodium component is Na2O. The content of Na2O in the flaky particles is 3% by mass or more and less than 9.5% by mass. The bright pigment preferably has a specific surface area of 5.0 m2/g or less.Type: ApplicationFiled: December 7, 2012Publication date: November 27, 2014Applicant: Nippon Sheet Glass Company, LimitedInventor: Takeaki Kitamura
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Publication number: 20140335348Abstract: A bright pigment of the present invention is a bright pigment including flaky particles and a metal oxide layer covering each surface of the flaky particles. The bright pigment has a particle diameter corresponding to a 90% volume-cumulative particle diameter from a small particle diameter side, in a particle size distribution, of 55 ?m or less. The flaky particles are formed of a material having a refractive index of 1.4 to 1.8. The flaky particles have an average thickness of 0.35 to 0.55 ?m and substantially do not contain flaky particles having a thickness of 0.15 ?m or less.Type: ApplicationFiled: December 7, 2012Publication date: November 13, 2014Inventor: Takeaki Kitamura
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Patent number: 8440014Abstract: The bright pigment of the present invention includes flaky particles and a metal oxide layer coating at least a part of the surface of each flaky particle. The bright pigment or the flaky particles of the present invention have a particle size distribution in which the particle size at 99% of the cumulative volume from the smaller particle size is 48 ?m or less, and the maximum particle size is 62 ?m or less. The flaky particles are made of a material having a refractive index in the range of 1.4 to 1.8. The flaky particles have a thickness distribution in which the frequency of the particles having a thickness in the range of 0.8 ?m to 1.9 ?m is 90% or more by volume, or the frequency of the particles having a thickness in the range of 0.01 ?m to 0.35 ?m is 90% or more by volume.Type: GrantFiled: April 28, 2008Date of Patent: May 14, 2013Assignee: Nippon Sheet Glass Company, LimitedInventors: Takeaki Kitamura, Takashi Wakamiya, Tomohiro Yagyu
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Patent number: 8409708Abstract: A bright pigment 100 includes: a flaky substrate 10; a first layer 20 that is formed on the flaky substrate 10 and that contains one selected from the group consisting of titanium dioxide, silver and a silver alloy as its main component; and a second layer 30 that is formed so that the first layer 20 is interposed between the flaky substrate 10 and the second layer 30 and that contains the hydroxide or hydrated oxide of neodymium.Type: GrantFiled: October 17, 2008Date of Patent: April 2, 2013Assignee: Nippon Sheet Glass Company, LimitedInventor: Takeaki Kitamura
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Patent number: 8273171Abstract: A pearlescent pigment (100) includes: a flaky substrate (10); a titanium dioxide layer (20) that is formed on the flaky substrate (10); and an oxazoline compound layer (40) that is formed on the titanium dioxide layer (20) with the titanium dioxide layer (20) being interposed between the flaky substrate (10) and the oxazoline compound layer (40), and serves as a top surface of the pearlescent pigment (100).Type: GrantFiled: August 29, 2007Date of Patent: September 25, 2012Assignee: Nippon Sheet Glass Company, LimitedInventors: Takeaki Kitamura, Juichi Ino
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Publication number: 20100249304Abstract: A pearlescent pigment (100) includes: a flaky substrate (10); a titanium dioxide layer (20) that is formed on the flaky substrate (10); and an oxazoline compound layer (40) that is formed on the titanium dioxide layer (20) with the titanium dioxide layer (20) being interposed between the flaky substrate (10) and the oxazoline compound layer (40), and serves as a top surface of the pearlescent pigment (100).Type: ApplicationFiled: August 29, 2007Publication date: September 30, 2010Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Takeaki Kitamura, Juichi Ino
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Publication number: 20100227181Abstract: A bright pigment 100 includes: a flaky substrate 10; a first layer 20 that is formed on the flaky substrate 10 and that contains one selected from the group consisting of titanium dioxide, silver and a silver alloy as its main component; and a second layer 30 that is formed so that the first layer 20 is interposed between the flaky substrate 10 and the second layer 30 and that contains the hydroxide or hydrated oxide of neodymium.Type: ApplicationFiled: October 17, 2008Publication date: September 9, 2010Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventor: Takeaki Kitamura
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Publication number: 20100180796Abstract: The black bright pigment of the present invention includes a scaly inorganic base 10 and a coating 20 covering the inorganic base 10 and containing nanoparticles including a pure substance of metal element other than copper or a noble-metal alloy (free of copper) and the nanoparticles include crystal dendrites. The average particle size of the nanoparticles is preferably 20 to 50 nm. The average width of the crystal dendrites is preferably 10 nm or less. The pure substance of noble metal or noble metal contained in the noble-metal alloy is preferably at least one selected from the group consisting of silver, gold, platinum, palladium and iridium.Type: ApplicationFiled: June 9, 2008Publication date: July 22, 2010Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Takeaki Kitamura, Hiroyuki Niki
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Publication number: 20100137488Abstract: A bright pigment of the present invention includes a scaly inorganic base 10, a silver-containing coating 11 that covers the inorganic base 10 and contains silver or a silver alloy, and a yellowing-suppressing coating 2 that covers the inorganic base 10 from outside of the silver-containing coating 11 and contains a metal compound functioning as an oxidizing agent. The metal compound is preferably at least one selected from the group consisting of a hydroxide of metal, an oxide hydrate of metal, and a salt of an oxide hydrate of metal, and the metal is at least one selected from the group consisting of tungsten, molybdenum, bismuth, vanadium, or cerium.Type: ApplicationFiled: April 23, 2007Publication date: June 3, 2010Applicant: NIPPON GLASS COMPANY, LIMITEDInventors: Takeaki Kitamura, Yusuke Kimura
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Publication number: 20100129412Abstract: The bright pigment of the present invention contains a scaly substrate 10 and an outermost coating 20 that covers the scaly substrate 10, that is provided as an outermost layer, and that contains at least one member selected from the group consisting of hydroxyapatite and hydrocalumite. The bright pigment of the present invention may be further provided with an interference color coating that is disposed more towards the center than the outermost coating and that contains at least one metal oxide selected from the group consisting of titanium oxide and iron oxide. Moreover, the bright pigment of the present invention may be further provided with a silver-containing coating that is disposed more towards the center than the outermost coating and that contains silver and/or a silver alloy. The outermost coating may contain an anionic pigment.Type: ApplicationFiled: April 18, 2008Publication date: May 27, 2010Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventor: Takeaki Kitamura
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Publication number: 20100083872Abstract: The bright pigment of the present invention includes flaky particles and a metal oxide layer coating at least a part of the surface of each flaky particle. The bright pigment or the flaky particles of the present invention have a particle size distribution in which the particle size at 99% of the cumulative volume from the smaller particle size is 48 ?m or less, and the maximum particle size is 62 ?m or less. The flaky particles are made of a material having a refractive index in the range of 1.4 to 1.8. The flaky particles have a thickness distribution in which the frequency of the particles having a thickness in the range of 0.8 ?m to 1.9 ?m is 90% or more by volume, or the frequency of the particles having a thickness in the range of 0.01 ?m to 0.35 ?m is 90% or more by volume.Type: ApplicationFiled: April 28, 2008Publication date: April 8, 2010Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Takeaki Kitamura, Takashi Wakamiya, Tomohiro Yagyu
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Publication number: 20090069447Abstract: A bright pigment with a gold tone of the present invention includes a scaly glass substrate 10, a base coating 20 containing at least one metallic material selected from the group consisting of silver, nickel and a nickel-based alloy, a gold coating 30 containing gold and a yellow coating 40 containing a yellow colorant and a parent material. The base coating 20, the gold coating 30 and the yellow coating 40 each form a layer covering the scaly glass substrate 10, and the base coating 20 is arranged innermost among the base coating 20, the gold coating 30 and the yellow coating 40.Type: ApplicationFiled: March 27, 2007Publication date: March 12, 2009Applicant: Nippon Sheet Glass Company, LimitedInventor: Takeaki Kitamura
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Publication number: 20090054534Abstract: A bright pigment including a scaly inorganic base 10 and a silver-based alloy coating 20 that covers the inorganic base 10 and that includes silver and at least one noble metal selected from the group consisting of gold, palladium and platinum, wherein the content of the noble metal is in a range of 0.1 to 2 atomic % when the sum of the atomic % of the silver and the atomic % of the noble metal is 100 atomic %.Type: ApplicationFiled: April 9, 2007Publication date: February 26, 2009Applicant: Nippon Sheet Glass Company, LimitedInventor: Takeaki Kitamura
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Publication number: 20070134179Abstract: The present invention is to provide a colored bright pigment which is to be incorporated into a coating material, a resin composition, an ink, a cosmetic and the like, and exhibits not only high transparency and brightness but also high chroma and clear color. The colored bright pigment is characterized in that it comprises scaly glass flakes on the surface of which a silica-based coating film containing an organic pigment is coated. It is preferred that a titanium oxide or a metal is coated on the surface of the scaly glass flakes and the silica-based coating film is further coated thereon. The above colored bright pigment is used after being incorporated into a coating material, a resin composition, an ink, a cosmetic or the like.Type: ApplicationFiled: January 18, 2005Publication date: June 14, 2007Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Juichi Ino, Takeaki Kitamura, Shigeru Yanagase, Yusuke Kimura