Patent ID: 8455156

Claim:
A gas separator for a fuel cell, the gas separator comprising: a concavo-convex structure formed in mutually reversed shapes on two opposite sides of the gas separator to define flow paths of different fluids on the respective two sides, the concavo-convex structure including: multiple first projections formed and protruded on one side of the two opposite sides and arranged at intervals having regularities in both a first direction and a second direction that is different from the first direction such that the multiple first projections are located away from one another; multiple second projections formed and protruded on the other side of the two opposite sides in a specific area corresponding to an area for formation of the multiple first projections on the one side and arranged at intervals having regularities in both the first direction and the second direction such that the multiple second projections are located away from one another, wherein the first projections and the second projections are alternately arranged along at least one of the first direction and the second direction; and a reinforcing element protruded on the one side and formed as a convex in a specific shape of connecting multiple positions where the first projections are expected to be formed according to the regularities, while avoiding positions corresponding to the second projections formed on the other side.