ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,737, issued on March 17, was assigned to Illinois Tool Works Inc. (Glenview, Ill.).

"Concrete slab joint forming system and method" was invented by Darrell A. Wiatrowski (Libertyville, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A concrete slab joint forming system and method for forming a joint between adjacent concrete slabs. In various embodiments, the concrete slab joint forming system includes a concrete slab joint former, an extension connector, a cross intersection connector, a tee intersection connector, an end connector, a field cut connector, and/or any combination of any quantity of these components."

The patent was filed on Mar...