ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,636, issued on June 24, was assigned to LOUISIANA-PACIFIC CORP. (Nashville, Tenn.).
"Nickel-gap flat siding product with locking joint" was invented by David L. Stackhouse (Nashville, Tenn.), Matthew E. Vrazel (Nashville, Tenn.) and Jack J. Johnson Jr. (Newberry, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A unique modified shiplap joint with matching or corresponding reverse curves on opposing edges or ends of a piece of siding, each forming one-half of the joint: an underlap edge, and an overlap edge. The respective curves engage and resist or prevent separation of the edges, particularly under a pre-determined wind load. A fastener chann...