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).

  • Patent number: 11920057
    Abstract: 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: Grant
    Filed: December 10, 2018
    Date of Patent: March 5, 2024
    Assignee: NISSAN CHEMICAL CORPORATION
    Inventors: Tomoki Furukawa, Masato Yamaguchi
  • Patent number: 11820917
    Abstract: 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: Grant
    Filed: December 10, 2018
    Date of Patent: November 21, 2023
    Assignee: NISSAN CHEMICAL CORPORATION
    Inventors: Masato Yamaguchi, Tomoki Furukawa
  • Patent number: 11634589
    Abstract: 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: Grant
    Filed: April 27, 2016
    Date of Patent: April 25, 2023
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshinari Koyama, Tomoki Furukawa, Motoko Asada
  • Publication number: 20220135814
    Abstract: 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: Application
    Filed: January 13, 2022
    Publication date: May 5, 2022
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshinari KOYAMA, Tomoki FURUKAWA, Motoko ASADA
  • Publication number: 20210163756
    Abstract: 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: Application
    Filed: December 10, 2018
    Publication date: June 3, 2021
    Applicant: NISSAN CHEMICAL CORPORATION
    Inventors: Tomoki FURUKAWA, Masato YAMAGUCHI
  • Publication number: 20200369895
    Abstract: 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: Application
    Filed: December 10, 2018
    Publication date: November 26, 2020
    Applicant: NISSAN CHEMICAL CORPORATION
    Inventors: Masato YAMAGUCHI, Tomoki FURUKAWA
  • Patent number: 10676643
    Abstract: 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: Grant
    Filed: March 27, 2017
    Date of Patent: June 9, 2020
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Taku Kato, Masayoshi Suzuki, Natsumi Murakami, Daiki Iijima, Tomoki Furukawa, Yoshinari Koyama
  • Patent number: 10669426
    Abstract: 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: Grant
    Filed: March 24, 2017
    Date of Patent: June 2, 2020
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Natsumi Murakami, Tomoki Furukawa, Yoshinari Koyama
  • Publication number: 20190185678
    Abstract: 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: Application
    Filed: March 24, 2017
    Publication date: June 20, 2019
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Natsumi MURAKAMI, Tomoki FURUKAWA, Yoshinari KOYAMA
  • Publication number: 20190144707
    Abstract: 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: Application
    Filed: March 27, 2017
    Publication date: May 16, 2019
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Taku KATO, Masayoshi SUZUKI, Natsumi MURAKAMI, Daiki IIJIMA, Tomoki FURUKAWA, Yoshinari KOYAMA
  • Publication number: 20180148579
    Abstract: 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: Application
    Filed: April 27, 2016
    Publication date: May 31, 2018
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshinari KOYAMA, Tomoki FURUKAWA, Motoko ASADA
  • Patent number: 9150421
    Abstract: 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: Grant
    Filed: January 19, 2011
    Date of Patent: October 6, 2015
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshinari Koyama, Motoko Asada, Tomoki Furukawa, Natsumi Tsuihiji
  • Publication number: 20140199554
    Abstract: 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: Application
    Filed: June 1, 2012
    Publication date: July 17, 2014
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshinari Koyama, Tomoki Furukawa, Motoko Asada
  • Publication number: 20120316266
    Abstract: 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: Application
    Filed: January 19, 2011
    Publication date: December 13, 2012
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshinari Koyama, Motoko Asada, Tomoki Furukawa, Natsumi Tsuihiji