Inventor
ASHITAKA KEIJI
JP20 patents
⚠️ This page may combine multiple inventors who share the name “ASHITAKA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJIMI INC
17 patentsUS10913857B2Feb 9, 2021
Method for producing aluminum hydroxide-coated silicon carbide particle powder and method for producing dispersion containing the same powder and dispersing medium
FUJIMI INC2 citations68
US11767224B2Sep 26, 2023
Method for producing silica sol
FUJIMI INC0 citations60
US11530335B2Dec 20, 2022
Modified colloidal silica and method for producing the same, and polishing agent using the same
FUJIMI INC0 citations60
US11518682B2Dec 6, 2022
Method for producing silica sol
FUJIMI INC1 citations60
US11499070B2Nov 15, 2022
Modified colloidal silica and method for producing the same, and polishing agent using the same
FUJIMI INC0 citations60
US10570322B2Feb 25, 2020
Polishing composition
FUJIMI INC1 citations60
US11001501B2May 11, 2021
Method for producing silica sol
FUJIMI INC0 citations59
US10604411B2Mar 31, 2020
Method for producing silica sol
FUJIMI INC1 citations59
US11167995B2Nov 9, 2021
Method for producing cationically modified silica and cationically modified silica dispersion
FUJIMI INC0 citations58
US10941318B2Mar 9, 2021
Method for producing cationically modified silica, cationically modified silica dispersion, method for producing polishing composition using cationically modified silica, and polishing composition using cationically modified silica
FUJIMI INC0 citations58
US12378116B2Aug 5, 2025
Titanium phosphate powder, production method therefor, and white pigment for cosmetics
FUJIMI INC0 citations57
US11638681B2May 2, 2023
White pigment for cosmetics, and cosmetic
FUJIMI INC0 citations57
US11345596B2May 31, 2022
Titanium phosphate powder, production method therefor, and white pigment for cosmetics
FUJIMI INC1 citations57
US11760697B2Sep 19, 2023
Dispersion for silicon carbide sintered body, green sheet for silicon carbide sintered body and prepreg material for silicon carbide sintered body using the same, and manufacturing method thereof
FUJIMI INC0 citations55
US12371331B2Jul 29, 2025
Method for producing silica sol
FUJIMI INC0 citations50
US12503403B2Dec 23, 2025
Method of producing aluminum hydroxide-coated SiC particles, dispersion solution and molded body containing same, and sintered body formed using same
FUJIMI INC0 citations46
US9611406B2Apr 4, 2017
Polishing composition, and polishing method and substrate production method using same
FUJIMI INC0 citations39