ArcelorMittal has patented a cold-rolled and heat-treated steel sheet with specific composition and structure. The sheet contains retained austenite, intercritical ferrite, cementite, and martensite/bainite, offering improved mechanical properties. GlobalData’s report on ArcelorMittal gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on ArcelorMittal, Photovoltaic roof tiles was a key innovation area identified from patents. ArcelorMittal's grant share as of March 2024 was 62%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for cold-rolled and heat treated steel sheet

Source: United States Patent and Trademark Office (USPTO). Credit: ArcelorMittal SA

A recently granted patent (Publication Number: US11965225B2) discloses a cold-rolled and heat-treated steel sheet with a specific composition and structure. The steel composition includes elements such as carbon, manganese, silicon, aluminum, molybdenum, chromium, niobium, titanium, vanadium, boron, nitrogen, sulfur, and phosphorus, with the remainder being iron and unavoidable impurities. The structure of the steel sheet consists of retained austenite, intercritical ferrite, cementite, and martensite and/or bainite, with specific surface fractions for each component.

Furthermore, the patent claims specify various aspects of the steel sheet, such as the average carbon and manganese content in the retained austenite, the presence of intercritical ferrite, and the types of martensite present. The structure of the steel sheet can vary in terms of the surface fraction of each component, including retained austenite, intercritical ferrite, partitioned martensite, fresh martensite, and cementite. The patent aims to protect the unique composition and structure of the cold-rolled and heat-treated steel sheet, highlighting the importance of specific element percentages and microstructural characteristics for improved performance in various applications.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.