Patent No. EP3837066 (titled "Use Of A Coating Composition And Corresponding Method For Producing A Centrifugal Casting Mould With A Coating") was filed by Httenes Albertus Chemische Werke Gesellschaft MIT Beschrnkter Haftung on Aug 13, 2019. The application was issued on Jun 29, 2022.
A sizing composition for centrifugal casting with a solids content of more than 69% by weight and a loss on ignition of less than 0.6% by weight, enabling rapid drying and controlled microstructure formation while minimizing gas defects and mold wear. The composition comprises a particulate, amorphous oxide, preferably microsilica, as the primary component, and secondary components such as zirconium oxide, carbon, and Lewis acids. The composition is applied to the inner wall of a centrifugal casting mold using a spray application method, enabling the production of castings with structured surfaces.

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| Company | Opposition Date | Representative |
|---|---|---|
| ASK CHEMICALS | Mar 29, 2023 | MULLER SCHUPFNER & PARTNER PATENT UND RECHTSANWALTSPARTNERSCHAFT MBB HAMBURG |
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