Toyota Motor had five patents in advanced materials during Q2 2024. Toyota Motor Corp has developed microcapsule and microsphere controlled release forms of antioxidants, specifically cerium oxide, to enhance the durability and lifespan of fuel cells. These forms are utilized in membrane electrode assemblies (MEAs) and polymer electrolyte membrane fuel cells (PEMFCs) to mitigate cerium migration within the fuel cells. GlobalData’s report on Toyota Motor gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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Toyota Motor had no grants in advanced materials as a theme in Q2 2024.
Recent Patents
Application: Controlled release of antioxidant for fuel cells (Patent ID: US20240145749A1)
The patent filed by Toyota Motor Corp. discloses the use of microcapsule and microsphere controlled release forms of antioxidants, specifically cerium oxide, to enhance the durability and extend the lifetime of fuel cells. These controlled release forms are incorporated into membrane electrode assemblies (MEAs) and polymer electrolyte membrane fuel cells (PEMFCs) to mitigate or suppress cerium migration within the fuel cells. The antioxidants are designed to release cerium oxide over time, thereby improving the overall performance and longevity of the fuel cells.
The patent includes claims for a membrane-electrode assembly comprising an anode, cathode, and proton exchange membrane, where at least one of these components contains cerium oxide microparticles in a controlled release form. The cerium oxide can be in the form of microcapsules or microspheres, with specific configurations to regulate the release of the antioxidant. Additionally, the patent covers various materials for the polymer shell or matrix, such as gelatin, chitosan, and polyurethanes, to control the release of cerium oxide microparticles over time. Overall, the patent aims to enhance the efficiency and operational lifetime of fuel cells by incorporating these innovative antioxidant delivery systems.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
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.
