Umicore has been granted a patent for a wall-flow filter designed to enhance particle removal from internal combustion engine exhaust. The filter features catalytically active coatings and incorporates a dry powder-gas aerosol of high-melting metal compounds to improve catalytic activity and filtration efficiency. GlobalData’s report on Umicore 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 Umicore, Hydrogen storage alloys was a key innovation area identified from patents. Umicore's grant share as of June 2024 was 52%. Grant share is based on the ratio of number of grants to total number of patents.
Wall-flow filter with catalytically active coatings for exhaust gas
The granted patent US12018605B2 describes a wall-flow filter designed to effectively remove particles from the exhaust gases of internal combustion engines. The filter features a structure comprising parallel channels, designated as channels E and A, which are separated by porous walls. The channels E are closed at one end, while channels A are closed at the opposite end. The filter incorporates at least one catalytically active coating, either Y or Z, applied to the surfaces of the channels. Notably, the filter's inlet region is treated with a dry powder-gas aerosol containing high-melting metal compounds, such as metal oxides and sulfates, which fill cracks in the coatings and pores in the filter surface. This design ensures that exhaust gases pass through the dry powder before exiting, enhancing the filter's efficiency in reducing harmful emissions.
Additionally, the patent outlines various configurations and enhancements for the wall-flow filter. It allows for the inclusion of a catalytic coating X within the filter walls, with provisions for the dry powder to occupy specific regions of the filter. The claims specify parameters such as the amount of dry powder retained, the ratio of particle to pore diameters, and the moisture content of the powder during application. The methods for producing the filter involve dispersing the powder in a gas stream, which is then drawn through the filter, ensuring optimal distribution and effectiveness. Overall, the patent presents a comprehensive approach to improving the performance of wall-flow filters in internal combustion engines, focusing on both structural design and material composition.
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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.
