EP3106431A1 - SLURRY-DESIGNATED SILICON NITRIDE POWDER AND METHOD FOR PRODUCING SAME, SILICON NITRIDE POWDER SLURRY FOR USE IN MOLD RELEASE AGENT AND METHOD FOR PRODUCING SAME, SILICON NITRIDE POWDER FOR USE IN MOLD RELEASE AGENT, MOLD RELEASE AGENT, AND POLYCRYSTALLINE-SILICON-CASTING MOLD AND METHOD FOR PRODUCING SAME | Patent Bear