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:
Nov. 25, 2025
Filed:
Apr. 13, 2022
Nippon Steel Corporation, Tokyo, JP;
Toagosei Co., Ltd., Tokyo, JP;
Kazutoshi Takeda, Tokyo, JP;
Shinsuke Takatani, Tokyo, JP;
Ryu Hirayama, Tokyo, JP;
Minako Fukuchi, Tokyo, JP;
Yoshiaki Iwase, Nagoya, JP;
Makoto Niwa, Nagoya, JP;
Makoto Hirakawa, Nagoya, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
TOAGOSEI CO., LTD., Tokyo, JP;
Abstract
This bonded and stacked core manufacturing method is for manufacturing a bonded and stacked core by performing press working on a strip-shaped steel sheet with a press working oil applied to one surface or both surfaces thereof, applying an adhesive to one surface of the strip-shaped steel sheet to obtain a plurality of steel sheet components, and stacking and bonding the steel sheet components, in which a curing accelerator having an average viscosity of 0.01 Pa·s to 100 Pa·s is applied to one surface or both surfaces of the strip-shaped steel sheet before the press working oil is applied.