Patents by Inventor Kasumi ONISHI

Kasumi ONISHI 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: 10047239
    Abstract: The invention provides an organic solvent dispersion of titanium oxide particles in a content of 10% by weight or more in an organic solvent except methanol and ethanol, wherein the titanium oxide particles are surface-treated with a surface treating agent comprising a silane coupling agent having the general formula (I) (RO)n—Si—X4-n??(I) wherein R is an alkyl group having carbon atoms of 1-4, n is 2 or 3, X is an alkyl, a fluoroalkyl, a vinyl or a (meth)acryloyloxyalkyl group, and 12-hydroxystearic acid, and wherein the titanium oxide particles in the organic solvent have a D50 in a range of 1 to 30 nm, and wherein the organic solvent dispersion has a transmittance of 2% or more at a wavelength of 500 nm and a transmittance of 70% or more at a wavelength of 800 nm, a viscosity of 10 mPa·s or less at a temperature of 25° C. immediately after production while the increase in the viscosity is 40 mPa·s or less seven days after production as compared to that of the dispersion immediately after production.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: August 14, 2018
    Assignee: SAKAI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takanori Morita, Atsushi Miyata, Kasumi Onishi
  • Patent number: 9976036
    Abstract: The invention provides an organic solvent dispersion of zirconium oxide particles in a content of 20% by weight or more in an organic solvent except methanol and ethanol.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: May 22, 2018
    Assignee: SAKAI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takanori Morita, Atsushi Miyata, Kasumi Onishi
  • Patent number: 9963355
    Abstract: The invention provides a method for producing an organic solvent dispersion of titanium oxide particles in an organic solvent except methanol and ethanol, comprising: (a) a surface treating process for surface treating an alcohol dispersion of titanium oxide particles in at least one alcohol solvent selected from the group consisting of methanol and ethanol with a surface treating agent comprising a silane coupling agent and 12-hydroxystearic acid thereby surface treating the titanium oxide particles; and (b) a solvent replacing process for replacing the alcohol solvent that is a dispersion medium of the alcohol dispersion of titanium oxide particles by the organic solvent except methanol and ethanol, wherein the silane coupling agent has the general formula (I) (RO)n—Si—X4-n??(I) wherein R is an alkyl group having carbon atoms of 1-4, n is 2 or 3, X is an alkyl, a fluoroalkyl, a vinyl or a (meth)acryloyloxyalkyl group.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: May 8, 2018
    Assignee: SAKAI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takanori Morita, Atsushi Miyata, Kasumi Onishi
  • Publication number: 20180029897
    Abstract: The invention provides a method for producing an organic solvent dispersion of titanium oxide particles in an organic solvent except methanol and ethanol, comprising: (a) a surface treating process for surface treating an alcohol dispersion of titanium oxide particles in at least one alcohol solvent selected from the group consisting of methanol and ethanol with a surface treating agent comprising a silane coupling agent and 12-hydroxystearic acid thereby surface treating the titanium oxide particles; and (b) a solvent replacing process for replacing the alcohol solvent that is a dispersion medium of the alcohol dispersion of titanium oxide particles by the organic solvent except methanol and ethanol, wherein the silane coupling agent has the general formula (I) (RO)n—Si—X4-n??(I) wherein R is an alkyl group having carbon atoms of 1-4, n is 2 or 3, X is an alkyl, a fluoroalkyl, a vinyl or a (meth)acryloyloxyalkyl group.
    Type: Application
    Filed: February 23, 2016
    Publication date: February 1, 2018
    Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takanori MORITA, Atsushi MIYATA, Kasumi ONISHI
  • Publication number: 20180030305
    Abstract: The invention provides an organic solvent dispersion of titanium oxide particles in a content of 10% by weight or more in an organic solvent except methanol and ethanol, wherein the titanium oxide particles are surface-treated with a surface treating agent comprising a silane coupling agent having the general formula (I) (RO)n—Si—X4-n ??(I) wherein R is an alkyl group having carbon atoms of 1-4, n is 2 or 3, X is an alkyl, a fluoroalkyl, a vinyl or a (meth)acryloyloxyalkyl group, and 12-hydroxystearic acid, and wherein the titanium oxide particles in the organic solvent have a D50 in a range of 1 to 30 nm, and wherein the organic solvent dispersion has a transmittance of 2% or more at a wavelength of 500 nm and a transmittance of 70% or more at a wavelength of 800 nm, a viscosity of 10 mPa·s or less at a temperature of 25° C. immediately after production while the increase in the viscosity is 40 mPa·s or less seven days after production as compared to that of the dispersion immediately after production.
    Type: Application
    Filed: February 23, 2016
    Publication date: February 1, 2018
    Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takanori MORITA, Atsushi MIYATA, Kasumi ONISHI
  • Publication number: 20170306161
    Abstract: The invention provides an organic solvent dispersion of zirconium oxide particles in a content of 20% by weight or more in an organic solvent except methanol and ethanol.
    Type: Application
    Filed: August 28, 2015
    Publication date: October 26, 2017
    Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takanori MORITA, Atsushi MIYATA, Kasumi ONISHI