公开(公告)号：US20220267644A1

公开(公告)日：2022-08-25

申请号：US17632843

申请日：2020-07-30

Applicant: FUJIMI INCORPORATED

Inventor： Shinji FURUTA ,  Takashi HAYAKAWA ,  Keiji ASHITAKA ,  Naoya MIWA ,  Kohsuke TSUCHIYA ,  Hisanori TANSHO ,  Reiko AKIZUKI

IPC: C09G1/02 ,  B01J20/28 ,  B01D69/02

Abstract: Provided is a method for filtering an additive-containing liquid that can achieve a polishing composition exhibiting excellent defect reducing capability while maintaining a practical filter life. The method for filtering a polishing additive-containing liquid provided by the present invention includes the step of: filtering the polishing additive-containing liquid with a filter that satisfies the following conditions (1) and (2). (1) The average pore diameter P measured by a palm porometer is 0.15 μm or less. (2) The pore diameter gradient (Sin/Sout), which is the ratio of the inlet-side average pore diameter (SO to the outlet-side average pore diameter (Sout), both diameters being measured through observation with an SEM, is 3 or less.

公开(公告)号：US20210139382A1

公开(公告)日：2021-05-13

申请号：US17042404

申请日：2019-03-26

Applicant: FUJIMI INCORPORATED

Inventor： Keigo KAMOSHIDA ,  Souma TAGUCHI ,  Keiji ASHITAKA ,  Naoya MIWA

IPC: C04B35/80 ,  C04B35/626 ,  C04B35/634 ,  C04B35/628 ,  C04B35/64

Abstract: Provided are a dispersion for a silicon carbide sintered body having a small environmental load, high dispersibility, and excellent temporal stability, and a manufacturing method thereof.
The dispersion is a dispersion for a silicon carbide sintered body, containing: silicon carbide particles; boron nitride particles; a resin having a hydroxyl group; and water, wherein the dispersion has a pH at 25° C. of less than or equal to 7.0, and the silicon carbide particles and the boron nitride particles have charges of the same sign. The dispersion is manufactured by a manufacturing method of a dispersion for a silicon carbide sintered body, including a mixing step of mixing a water dispersion containing silicon carbide particles, a water dispersion containing boron nitride particles, and an aqueous solution containing a resin having a hydroxyl group.

公开(公告)号：US20200180968A1

公开(公告)日：2020-06-11

申请号：US16789137

申请日：2020-02-12

Applicant: FUJIMI INCORPORATED

Inventor： Keiji ASHITAKA ,  Masaaki ITO ,  Jun SHINODA

IPC: C01B33/145 ,  C08L83/04 ,  B01J13/00

Abstract: [Problem] Provided is a method for producing a silica sol capable of providing consistent production of the silica sol having a uniform particle size of silica particles in any particle size of the silica particles.[Solution] A method for producing a silica sol is a method including a step of mixing liquid (A) containing an alkaline catalyst, water, and a first organic solvent with liquid (B) containing an alkoxysilane or its condensate and a second organic solvent, and liquid (C1) having a pH of 5.0 or higher and lower than 8.0 and containing water or liquid (C2) containing water and being free of an alkaline catalyst to make a reaction liquid.

公开(公告)号：US20190309190A1

公开(公告)日：2019-10-10

申请号：US16448992

申请日：2019-06-21

Applicant: FUJIMI INCORPORATED

Inventor： Keiji ASHITAKA ,  Shogo TSUBOTA

IPC: C09G1/02 ,  C01B33/148 ,  C01B33/146 ,  C09K3/14 ,  H01L21/304 ,  C07F7/02 ,  H01L21/3105 ,  B24B37/04 ,  B24B37/00 ,  C01B33/149

Abstract: To provide modified colloidal silica capable of improving the stability of the polishing speed with time when used as abrasive grains in a polishing composition for polishing a polishing object that contains a material to which charged modified colloidal silica easily adheres, such as a SiN wafer, and to provide a method for producing the modified colloidal silica.Modified colloidal silica, being obtained by modifying raw colloidal silica, wherein the raw colloidal silica has a number distribution ratio of 10% or less of microparticles having a particle size of 40% or less relative to a volume average particle size based on Heywood diameter (equivalent circle diameter) as determined by image analysis using a scanning electron microscope.

公开(公告)号：US20230404876A1

公开(公告)日：2023-12-21

申请号：US18456072

申请日：2023-08-25

Applicant: FUJIMI INCORPORATED

Inventor： Mayumi IWAKUNI ,  Keiji ASHITAKA ,  Naoya MIWA

IPC: A61K8/29 ,  A61K8/02 ,  A61Q1/02 ,  A61Q1/08 ,  A61Q1/10

CPC classification number: A61K8/29 ,  A61K8/0254 ,  A61Q1/10 ,  A61Q1/08 ,  A61Q1/02

Abstract: Provided is a white pigment for cosmetics, and the white pigment has a higher function as a base pigment than that of titanium oxide. A white pigment for cosmetics of the present invention includes a titanium phosphate powder having a whiteness of 92.91 or more as determined in accordance with JIS Z 8715.

公开(公告)号：US20230293402A1

公开(公告)日：2023-09-21

申请号：US18123685

申请日：2023-03-20

Applicant: FUJIMI INCORPORATED

Inventor： Mayumi IWAKUNI ,  Keiji ASHITAKA ,  Naoya MIWA

IPC: A61K8/29 ,  A61K8/02

CPC classification number: A61K8/29 ,  A61K8/022 ,  A61K2800/412 ,  A61K2800/413 ,  A61K2800/43 ,  A61Q1/12

Abstract: Provided is a white pigment for cosmetics capable of giving a cosmetic having an excellent performance smoothly applicable onto the skin. A white pigment for cosmetics of the present invention includes a titanium phosphate powder, the titanium phosphate powder includes crystal particles of titanium phosphate, and the titanium phosphate powder has an average friction coefficient (MIU) of less than 1.45.

公开(公告)号：US20230219857A1

公开(公告)日：2023-07-13

申请号：US17927534

申请日：2021-05-14

Applicant: FUJIMI INCORPORATED ,  OBAYASHI CORPORATION ,  NAGOYA INSTITUTE OF TECHNOLOGY

Inventor： Takashi HAYAKAWA ,  Naoya MIWA ,  Keiji ASHITAKA ,  Takashi HITOMI ,  Nobuko TAGUCHI ,  Takashi SHIRAI ,  Yunzi XIN

IPC: C04B35/626 ,  C04B35/14

CPC classification number: C04B35/6269 ,  C04B35/14 ,  C04B2235/3208 ,  C04B2235/3418

Abstract: The present invention provides means capable of imparting high temporal stability to a hardening aid solution which serves as a raw material and capable of imparting high strength and high quality stability to a hardened body of the self-hardening material, in the hardened body of the self-hardening material that contains a ceramic powder containing Si element at least on the surface thereof. The present invention relates to a hardening aid solution containing Si element, an alkali, and a dispersing medium, wherein the dispersing medium contains water; a dissolution concentration of the Si element is 20000 mass ppm or more; the number of moles of the alkali present in 1 kg of the dispersing medium is 2 mol/kg or more; an absolute value of an amount of change in a dissolution concentration of Si element in a solution obtained by diluting the hardening aid solution by 2 times based on the mass using an aqueous KOH solution having a concentration of 3 mol/L is 2000 mass ppm or less, between before and after a heat dissolution test including heating the solution at a solution temperature of 80° C. for 5 hours, and then allowing the solution to stand in an ambient environment at 25° C. for 1 hour; and the hardening aid solution is used for hardening a powder containing a ceramic powder containing Si element at least on the surface thereof.

公开(公告)号：US20220023170A1

公开(公告)日：2022-01-27

申请号：US17276288

申请日：2019-03-28

Applicant: FUJIMI INCORPORATED

Inventor： Mayumi IWAKUNI ,  Keiji ASHITAKA ,  Naoya MIWA

IPC: A61K8/29 ,  A61K8/02 ,  A61Q1/12

Abstract: Provided is a white pigment for cosmetics capable of giving a cosmetic that gives a coating film having less stickiness and higher long-lasting properties. A white pigment for cosmetics of the present invention includes a titanium phosphate powder, the titanium phosphate powder includes crystal particles of titanium phosphate, and a ratio (oil absorption value/specific surface area) of an oil absorption value (ml/100 g) to a specific surface area (m2/g) of the crystal particles is 2.0 or more.

公开(公告)号：US20210259937A1

公开(公告)日：2021-08-26

申请号：US17276299

申请日：2019-03-28

Applicant: FUJIMI INCORPORATED

Inventor： Mayumi IWAKUNI ,  Keiji ASHITAKA ,  Naoya MIWA

IPC: A61K8/29 ,  A61K8/02

Abstract: Provided is a white pigment for cosmetics capable of giving a cosmetic having an excellent performance smoothly applicable onto the skin. A white pigment for cosmetics of the present invention includes a titanium phosphate powder, the titanium phosphate powder includes crystal particles of titanium phosphate, and the titanium phosphate powder has an average friction coefficient (MIU) of less than 1.45.

公开(公告)号：US20210087067A1

公开(公告)日：2021-03-25

申请号：US17022876

申请日：2020-09-16

Applicant: FUJIMI INCORPORATED

Inventor： Keiji ASHITAKA ,  Yusuke KAWASAKI ,  Masaaki ITO ,  Jun SHINODA ,  Shogo TSUBOTA

IPC: C01B33/145

Abstract: There is provided a method for producing a silica sol including: a first step of adding an organic acid to at least one of liquid (A) containing an alkaline catalyst, water, and a first organic solvent and liquid (C) containing water; and a second step of mixing the liquid (A) with liquid (B) containing an alkoxysilane or its condensate and a second organic solvent, and the liquid (C) to make a reaction liquid after the first step.