General air purifiers incorporate motor fans and filters in them, but j.air has no fans or filters. Therefore, it generates no motor sounds. The secret of generating a breeze despite such motor-less design lies in our proprietary ion electrode structure. For this structure, we applied an electric discharge mechanism called “corona discharge.” This mechanism and our proprietary combination with needle-type electrodes realized j.air’s capacity to purify air without using fans or filters. We have already obtained a utility model for this technology and have obtained a patent (PAT6897904).