Teck Resources has been granted a patent for a cathodic corrosion-protection coating for post-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. 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 July 2024 was 75%. 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. Key to the formulation are specific atomic weight percent ratios among these elements, particularly the ratio of zinc to oxygen, which is maintained between approximately 0.3 and 0.7. Additional claims detail further ratios, such as zinc to aluminum (ranging from 0.8 to 8.0) and aluminum to oxygen (from 0.1 to 0.6), which contribute to the coating's protective properties.
Moreover, the patent outlines the presence of an (alpha) a (Fe, Zn) phase while excluding a zinc-rich (gamma) G phase, which is significant for the coating's performance. The inclusion of boron in the steel sheet is also noted in some claims, potentially enhancing the coating's effectiveness. The patent encompasses various combinations of the specified ratios and phases, indicating a comprehensive approach to optimizing the corrosion resistance of the coated steel sheets.
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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.
