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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.:

US 12540250 B1

PDFFull Text
Date of Patent:
Feb. 03, 2026

Filed:

Jul. 09, 2021

Pre-painted metal sheet, burn-prevention cover, and manufacturing method of pre-painted metal sheet

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventor:

Fumio Shibao, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C09D 7/65 (2018.01); B05D 1/38 (2006.01); B05D 7/00 (2006.01); B05D 7/14 (2006.01); B05D 7/24 (2006.01); B32B 5/14 (2006.01); B32B 5/16 (2006.01); B32B 5/30 (2006.01); B32B 15/08 (2006.01); B32B 15/16 (2006.01); B32B 15/18 (2006.01); C09D 5/18 (2006.01); C09D 7/40 (2018.01); C09D 7/63 (2018.01); C09D 201/00 (2006.01); C08K 7/22 (2006.01);
U.S. Cl.
CPC ...
C09D 7/65 (2018.01); B05D 1/38 (2013.01); B05D 7/14 (2013.01); B05D 7/24 (2013.01); B05D 7/52 (2013.01); B32B 5/14 (2013.01); B32B 5/16 (2013.01); B32B 5/30 (2013.01); B32B 15/08 (2013.01); B32B 15/16 (2013.01); B32B 15/18 (2013.01); C09D 5/18 (2013.01); C09D 7/63 (2018.01); C09D 7/66 (2018.01); C09D 7/70 (2018.01); C09D 201/00 (2013.01); B05D 2202/00 (2013.01); B05D 2320/00 (2013.01); B05D 2601/20 (2013.01); B05D 2602/00 (2013.01); C08K 7/22 (2013.01); Y10T 428/12569 (2015.01); Y10T 428/12757 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12993 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/26 (2015.01); Y10T 428/263 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01);
Abstract

A pre-painted metal sheet including a metal sheet and a void-containing paint film, which is located on at least one surface of the metal sheet, with dispersed fine particles and voids, wherein when a cross-section of the void-containing paint film cut in a thickness direction of the void-containing paint film is observed, the voids are present in 40 to 95 area % of a total area of the cross-section of the void-containing paint film. When an average particle diameter of the fine particles is t [μm] and an average film thickness of the void-containing paint film is T [μm], a ratio t/T is in a range of 0.7 to 3.0. An elastic modulus of the fine particles, when compressed by 10% from the thickness direction, is 30 MPa or more.

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