Patent · US Active

Solution for forming insulation coating and grain-oriented electrical steel sheet

US11440846B2 · kind B2 · utility

0Cited by

6References

14Claims

0Family size

Assignee

NIPPON STEEL CORPORATION · JP

Inventors

Regis Lemaitre · Béthune, FR
Ludger Lahn · Moers, DE
Carsten Schepers · Raesfeld, DE
Shuichi Yamazaki
Kazutoshi Takeda · Tokyo, JP
Masaru Takahashi · Nagaokakyo, JP
Hirohiko Sato · Iruma, JP
Koji Kanehashi · Tokyo, JP

Key dates

Filing date	May 27, 2013
Grant date	Sep 13, 2022
Priority date	—
Expiry date	May 27, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/249969
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A solution for forming an insulation coating of grain-oriented electrical steel sheet includes an aqueous solution prepared by mixing a phosphate solution and colloidal silica. Chromium is not added to the aqueous solution. The colloidal silica includes silica particles surface-modified by an aluminate or is prepared by adding an aluminate to colloidal silica such as conventional colloidal silica.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.