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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 12577651 B1

PDFFull Text
Date of Patent:
Mar. 17, 2026

Filed:

Aug. 08, 2022

Flat steel product having an improved zinc coating

Applicant:

Thyssenkrupp Steel Europe Ag, Duisburg, DE;

Inventors:

Stefan Bienholz, Bochum, DE;

Sebastian Stille, Dortmund, DE;

Stefan Krebs, Dortmund, DE;

Luis Fernando Piedra-Garza, Essen, DE;

Bernd Schuhmacher, Dortmund, DE;

Assignee:

THYSSENKRUPP STEEL EUROPE AG, Duisburg, DE;

Attorney:

Benesch Friedlander Coplan & Aronoff LLP

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C23C 14/16 (2006.01); B32B 15/01 (2006.01); B32B 15/04 (2006.01); B32B 15/18 (2006.01); C23C 14/02 (2006.01); C23C 14/24 (2006.01); C23C 14/34 (2006.01); C23C 14/54 (2006.01); C23C 14/56 (2006.01); C23C 30/00 (2006.01);
U.S. Cl.
CPC ...
C23C 14/16 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C23C 14/021 (2013.01); C23C 14/165 (2013.01); C23C 14/24 (2013.01); C23C 14/34 (2013.01); C23C 14/54 (2013.01); C23C 14/542 (2013.01); C23C 14/562 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); Y10T 428/12799 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12993 (2015.01); Y10T 428/24942 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/24959 (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 flat steel product includes a steel substrate having an anticorrosion coating present at least on one side of the steel substrate and made of zinc or a zinc alloy. This anticorrosion coating, on the surface remote from the steel substrate, has zinc nanocrystals having an average diameter of less than 500 nm. A process for producing such an anticorrosion coating includes producing or providing a steel substrate, continuously introducing the steel substrate into a coating chamber at a reduced pressure, applying an anticorrosion coating on the steel substrate by physical vapor deposition, and continuously discharging the steel substrate from the coating chamber.

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