ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,482, issued on April 22, was assigned to VALINGE INNOVATION AB (Viken, Sweden).
"Floor covering with interlocking design" was invented by John M. Whispell (Woodstown, N.J.) and Hao A. Chen (Chadds Ford, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Surface coverings, such as floor coverings, with an interlocking design are described. Methods of making the surface coverings are further described. A plank including a resilient composite sheet having four sides, an upper surface, a lower surface, and an overall thickness, and said composite sheet comprising at least one base layer, wherein said at least one base layer comprising at least one polyme...