US Patent 7984600 Groutless tile system and method for making the same

A groutless tile system including: a plurality of groutless tiles, wherein each groutless tile includes: a durable surface disposed on a substrate; and a first coupling member disposed on an edge of the substrate; wherein at least a portion of the substrate extends beyond the durable surface, wherein the first coupling member and a second coupling member of an adjacent tile are operable for coupling adjacent groutless tiles, and wherein the substrate prevents the durable surfaces of adjacent groutless tiles from contacting one another.