Patent Database: TW, CN, US, JP
Search Strategy: (即热 OR 瞬热 OR 瞬間 OR 瞬間加熱 OR on-demand heat* OR instant heat* OR tankless heat*) AND (加热装置 OR 加热设备 OR 加熱裝置 OR 加熱設備 OR heating apparatus OR heating equipment)
Patent Database: TW, CN, US, JP
Search Strategy: (即热 OR 瞬热 OR 瞬間 OR 瞬間加熱 OR on-demand heat* OR instant heat* OR tankless heat*) AND (加热装置 OR 加热设备 OR 加熱裝置 OR 加熱設備 OR heating apparatus OR heating equipment)