The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2025
Filed:
Aug. 29, 2018
Tokuyama Corporation, Shunan, JP;
Hiromasa Fujioka, Shunan, JP;
Osamu Tanaka, Shunan, JP;
Hiroaki Taira, Shunan, JP;
Naoki Mikami, Shunan, JP;
Toshiaki Ootani, Shunan, JP;
TOKUYAMA CORPORATION, Shunan, JP;
Abstract
This surface-treated sol-gel silica is characterized by containing sol-gel silica having an average particle size of 0.05 μm or more and 2.0 μm or less as measured by laser diffraction scattering and a surface treatment agent on the surface of the sol-gel silica. In a dispersion produced by dispersing 5 mass % of the sol-gel silica in ethanol by emitting ultrasonic waves at 40W for 10 minutes, the content of particles with particle sizes of 5 μm or more is 10 ppm or less in a particle number size distribution obtained by a Coulter counter method.