Patents by Inventor Tomoki Furukawa
Tomoki Furukawa 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: 11920057Abstract: An inorganic oxide particles which have a minute particle diameter at which no interference fringes occur in a coating film and high transparency can be secured even when applied to a high refractive index substrate, and in which excitation by ultraviolet radiation is almost completely suppressed, a coating composition containing such particles, and an optical member having a cured film formed from the coating composition. Inorganic oxide particles obtained by bonding an organosilicon compound having a nitrogen-containing heterocyclic group to the surface of modified metal oxide colloid particles (C) having an average particle diameter of 2 to 100 nm, which include metal oxide colloid particles (A) having an average primary particle diameter of 2 to 60 nm as nuclei and with the nuclei surface coated with a coating composed of inorganic oxide colloid particles (B) having an average primary particle diameter of 1 to 4 nm.Type: GrantFiled: December 10, 2018Date of Patent: March 5, 2024Assignee: NISSAN CHEMICAL CORPORATIONInventors: Tomoki Furukawa, Masato Yamaguchi
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Patent number: 11820917Abstract: A coating composition can form a cured film which has excellent transparency, hardness, abrasion resistance, adhesion, and weather resistance. The stability of the composition itself is excellent. An optical member has a cured film formed from the coating composition.Type: GrantFiled: December 10, 2018Date of Patent: November 21, 2023Assignee: NISSAN CHEMICAL CORPORATIONInventors: Masato Yamaguchi, Tomoki Furukawa
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Patent number: 11634589Abstract: There are provided a coating composition being possible to form a cured film which has excellent transparency and weather resistance, and especially hardness. A coating composition obtained by which a silicon-containing substance as a component (M) and a silica colloidal particle having a primary particle diameter of 2 to 80 nm as a component (S) are mixed, and then the component (M) is hydrolyzed, and the resulting aqueous solution is subsequently mixed with a colloidal particle (C) wherein a component (F) is a modified metal oxide colloidal particle (C) having a primary particle diameter of 2 to 100 nm, which includes a metal oxide colloidal particle (A) having a primary particle diameter of 2 to 60 nm as a core, whose surface is coated with a coating (B) formed of an acidic oxide colloidal particle.Type: GrantFiled: April 27, 2016Date of Patent: April 25, 2023Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yoshinari Koyama, Tomoki Furukawa, Motoko Asada
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Publication number: 20220135814Abstract: A substrate is coated with a transparent coating film using a coating liquid for forming a transparent coating film including metal oxide particles and a matrix formation component. The metal oxide particles each include a metal oxide particle containing titanium oxide coated with silicon dioxide-stannic oxide complex oxide, including a titanium oxide-containing core particle; and a coating layer with which the titanium oxide-containing core particle is coated and that is made of silicon dioxide-stannic oxide complex oxide colloidal particles having a mass ratio of silicon dioxide/stannic oxide of 0.1 to 5.0, where one or more intermediate thin film layers that are made of any one of an oxide; a complex oxide of at least one element selected from Si, Al, Sn, Zr, Zn, Sb, Nb, Ta, and W; and a mixture of the oxide and the complex oxide are interposed between the core particle and the coating layer.Type: ApplicationFiled: January 13, 2022Publication date: May 5, 2022Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yoshinari KOYAMA, Tomoki FURUKAWA, Motoko ASADA
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Publication number: 20210163756Abstract: An inorganic oxide particles which have a minute particle diameter at which no interference fringes occur in a coating film and high transparency can be secured even when applied to a high refractive index substrate, and in which excitation by ultraviolet radiation is almost completely suppressed, a coating composition containing such particles, and an optical member having a cured film formed from the coating composition. Inorganic oxide particles obtained by bonding an organosilicon compound having a nitrogen-containing heterocyclic group to the surface of modified metal oxide colloid particles (C) having an average particle diameter of 2 to 100 nm, which include metal oxide colloid particles (A) having an average primary particle diameter of 2 to 60 nm as nuclei and with the nuclei surface coated with a coating composed of inorganic oxide colloid particles (B) having an average primary particle diameter of 1 to 4 nm.Type: ApplicationFiled: December 10, 2018Publication date: June 3, 2021Applicant: NISSAN CHEMICAL CORPORATIONInventors: Tomoki FURUKAWA, Masato YAMAGUCHI
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Publication number: 20200369895Abstract: A coating composition can form a cured film which has excellent transparency, hardness, abrasion resistance, adhesion, and weather resistance. The stability of the composition itself is excellent. An optical member has a cured film formed from the coating composition.Type: ApplicationFiled: December 10, 2018Publication date: November 26, 2020Applicant: NISSAN CHEMICAL CORPORATIONInventors: Masato YAMAGUCHI, Tomoki FURUKAWA
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Patent number: 10676643Abstract: A coating film-forming composition includes a hydrolysis-condensation product of a hydrolyzable silane and fine inorganic particles subjected to a special dispersion treatment, that can be formed into a highly heat-resistant, highly transparent coating film capable of exhibiting a high refractive index and having a large thickness and excellent storage stability as a coating composition; and a process for producing the coating film-forming composition.Type: GrantFiled: March 27, 2017Date of Patent: June 9, 2020Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Taku Kato, Masayoshi Suzuki, Natsumi Murakami, Daiki Iijima, Tomoki Furukawa, Yoshinari Koyama
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Patent number: 10669426Abstract: A dispersion that inorganic oxide microparticles may be dispersed at a high concentration in a solvent, a composition for film formation having high transparency, high refractive index and adhesion to a base layer. Inorganic oxide microparticles wherein an amphiphilic organosilicon compound having one or more selected from a polyoxyethylene group, a polyoxypropylene group, or a polyoxybutylene group as a hydrophilic group, and one or more selected from a C1-18 alkylene group or a vinylene group as a hydrophobic group bonded to a surface of modified metal oxide colloidal particles (C) having a primary particle diameter of 2 to 100 nm, the modified metal oxide colloidal particles wherein a surface of metal oxide colloidal particles (A) having a primary particle diameter of 2 to 60 nm as a nucleus is coated with a coating material (B) including metal oxide colloidal particles having a primary particle diameter of 1 to 4 nm.Type: GrantFiled: March 24, 2017Date of Patent: June 2, 2020Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Natsumi Murakami, Tomoki Furukawa, Yoshinari Koyama
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Publication number: 20190185678Abstract: A dispersion that inorganic oxide microparticles may be dispersed at a high concentration in a solvent, a composition for film formation having high transparency, high refractive index and adhesion to a base layer. Inorganic oxide microparticles wherein an amphiphilic organosilicon compound having one or more selected from a polyoxyethylene group, a polyoxypropylene group, or a polyoxybutylene group as a hydrophilic group, and one or more selected from a C1-18 alkylene group or a vinylene group as a hydrophobic group bonded to a surface of modified metal oxide colloidal particles (C) having a primary particle diameter of 2 to 100 nm, the modified metal oxide colloidal particles wherein a surface of metal oxide colloidal particles (A) having a primary particle diameter of 2 to 60 nm as a nucleus is coated with a coating material (B) including metal oxide colloidal particles having a primary particle diameter of 1 to 4 nm.Type: ApplicationFiled: March 24, 2017Publication date: June 20, 2019Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Natsumi MURAKAMI, Tomoki FURUKAWA, Yoshinari KOYAMA
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Publication number: 20190144707Abstract: A coating film-forming composition includes a hydrolysis-condensation product of a hydrolyzable silane and fine inorganic particles subjected to a special dispersion treatment, that can be formed into a highly heat-resistant, highly transparent coating film capable of exhibiting a high refractive index and having a large thickness and excellent storage stability as a coating composition; and a process for producing the coating film-forming composition.Type: ApplicationFiled: March 27, 2017Publication date: May 16, 2019Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Taku KATO, Masayoshi SUZUKI, Natsumi MURAKAMI, Daiki IIJIMA, Tomoki FURUKAWA, Yoshinari KOYAMA
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Publication number: 20180148579Abstract: There are provided a coating composition being possible to form a cured film which has excellent transparency and weather resistance, and especially hardness. A coating composition obtained by which a silicon-containing substance as a component (M) and a silica colloidal particle having a primary particle diameter of 2 to 80 nm as a component (S) are mixed, and then the component (M) is hydrolyzed, and the resulting aqueous solution is subsequently mixed with a colloidal particle (C) wherein a component (F) is a modified metal oxide colloidal particle (C) having a primary particle diameter of 2 to 100 nm, which includes a metal oxide colloidal particle (A) having a primary particle diameter of 2 to 60 nm as a core, whose surface is coated with a coating (B) formed of an acidic oxide colloidal particle.Type: ApplicationFiled: April 27, 2016Publication date: May 31, 2018Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yoshinari KOYAMA, Tomoki FURUKAWA, Motoko ASADA
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Patent number: 9150421Abstract: There is provided a colloidal particle of an oxide of at least one metal selected from the group consisting of Ti, Fe, Zr, Sn, Ta, Nb, Y, Mo, W, Pb, In, Bi, and Sr, which is capable of being dispersed in a hydrophobic organic solvent, and a hydrophilic organic solvent dispersed sol thereof or a sol thereof dispersed in a hydrophobic organic solvent having a solubility of water of 0.05 to 12% by mass, and further, a fine powder of a metal oxide colloidal particle capable of being redispersed in various organic solvents. A silane treated modified metal oxide colloidal particle on the surface of which an amine compound and 1 to 4 silyl group(s) per 1 nm2 of the surface area are bonded, and which is produced by coating a metal oxide colloidal particle as a core with a complex oxide colloidal particle.Type: GrantFiled: January 19, 2011Date of Patent: October 6, 2015Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yoshinari Koyama, Motoko Asada, Tomoki Furukawa, Natsumi Tsuihiji
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Publication number: 20140199554Abstract: A metal oxide particle containing titanium oxide coated with silicon dioxide-stannic oxide complex oxide including: a titanium oxide-containing core particle (A); and a coating layer with which the titanium oxide-containing core particle (A) is coated and that is made of silicon dioxide-stannic oxide complex oxide colloidal particles (B) having a mass ratio of silicon dioxide/stannic oxide of 0.1 to 5.0, wherein one or more intermediate thin film layers that are made of any one of an oxide; a complex oxide of at least one element selected from the group consisting of Si, Al, Sn, Zr, Zn, Sb, Nb, Ta, and W; and a mixture of the oxide and the complex oxide are interposed between the titanium oxide-containing core particle (A) and the coating layer made of the silicon dioxide-stannic oxide complex oxide colloidal particles (B).Type: ApplicationFiled: June 1, 2012Publication date: July 17, 2014Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yoshinari Koyama, Tomoki Furukawa, Motoko Asada
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Publication number: 20120316266Abstract: There is provided a colloidal particle of an oxide of at least one metal selected from the group consisting of Ti, Fe, Zr, Sn, Ta, Nb, Y, Mo, W, Pb, In, Bi, and Sr, which is capable of being dispersed in a hydrophobic organic solvent, and a hydrophilic organic solvent dispersed sol thereof or a sol thereof dispersed in a hydrophobic organic solvent having a solubility of water of 0.05 to 12% by mass, and further, a fine powder of a metal oxide colloidal particle capable of being redispersed in various organic solvents. A silane treated modified metal oxide colloidal particle on the surface of which an amine compound and 1 to 4 silyl group(s) per 1 nm2 of the surface area are bonded, and which is produced by coating a metal oxide colloidal particle as a core with a complex oxide colloidal particle.Type: ApplicationFiled: January 19, 2011Publication date: December 13, 2012Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yoshinari Koyama, Motoko Asada, Tomoki Furukawa, Natsumi Tsuihiji