Established in October 1958 at Nihonbashi, Tokyo, they started to launched Shinmaruko factory at Nakahara-ku, Kawasaki-shi. This company decided to create this brewing device with the wave streamline style as their products characteristic. What makes it quite distinct from other pour-over devices is this device has three extraction holes instead of single extraction hole. This device also has flat bottom, eliminates any channeling of water in the coffee bed. As a result, extremely crisp cup would be enjoyed. With the filter that has minimum contact with the dripper, the consistency of the temperature and even dispersion of water can be achieved.