https://patentbrief.org/company/epcos-pte-ltd Plain-English explanations of patents assigned to Epcos Pte Ltd, newest first. en-us Mon, 15 Jun 2026 06:00:33 GMT https://patentbrief.org/patent/us/RE42346/cyclone-vacuum-cleaner A design for a tiny, silicon-based microphone that stacks a sound-sensing chip and an electronic processor chip together with an intermediate layer to save space. Tue, 10 May 2011 00:00:00 GMT https://patentbrief.org/patent/us/RE42346/cyclone-vacuum-cleaner