Teck Resources has been granted a patent for a cathodic corrosion-protection coating for press-hardened steel strips. The coating includes zinc, aluminum, and manganese or antimony, with specific atomic weight ratios of zinc to oxygen in the surface oxides, enhancing the steel’s durability against corrosion. GlobalData’s report on Teck Resources 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 Teck Resources, Extraction by leaching was a key innovation area identified from patents. Teck Resources's grant share as of June 2024 was 73%. Grant share is based on the ratio of number of grants to total number of patents.
Cathodic corrosion-protection coating for press hardened steel
The granted patent US12031215B2 describes a post-hot pressed cathodic corrosion-protection coating specifically designed for sheet steel. The coating is characterized by a surface that includes surface oxides of iron, zinc, aluminum, and manganese, with specific atomic weight percent ratios among these elements. Notably, the ratio of zinc to oxygen in the surface oxides is maintained between approximately 0.3 and 0.7. Additional claims detail further specific ratios, such as the zinc to aluminum ratio ranging from about 0.8 to 8.0, and the aluminum to oxygen ratio from about 0.1 to 0.6. The presence of an (alpha) a (Fe, Zn) phase is also highlighted, while the absence of a zinc-rich (gamma) G phase is noted, indicating a particular structural composition of the coating.
Moreover, the patent expands on the composition by including antimony in the surface oxides alongside the previously mentioned elements. The claims reiterate the importance of maintaining specific atomic weight percent ratios for optimal performance, including the same ranges for zinc to aluminum and aluminum to oxygen as stated earlier. The inclusion of boron in the steel sheet is also specified in some claims, suggesting a potential enhancement in the coating's properties. Overall, the patent outlines a detailed formulation and structural characteristics of a corrosion-protection coating aimed at improving the durability and longevity of sheet steel 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.
