Patent ID: 7189367

Claim:
A reactor comprising: a flat plate-like first substrate provided with a heating means inside said first substrate; a flat plate-like second substrate, which is placed on the top of said first substrate, and said second substrate having a flow channel with a predetermined contour defined on a surface thereof which is placed on the top of said first substrate; said flow channel defined on said second substrate forms a concaved depression with respect to the top of said first substrate within a section opposed to the heating means provided on the inside of said first substrate with said channel being defined on the top of said first substrate, and said concaved depression defines a chamber with said second substrate being placed on the top of said first substrate; wherein said heating means in said first substrate has a rectangle-shaped region along the top of said first substrate, while said concaved depression of said flow channel in said second substrate has a columnar shape, and a circle-shaped region of the bottom of the depression in the column-shaped concaved depression is narrower than the rectangle-shaped region of said heating means in said first substrate.