ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,295, issued on Sept. 22, was assigned to Freedom Chemical Corp. (Foothill Ranch, Calif.).
"System and method for waterproofing railway structures" was invented by Jonathan Wolff Haydu (San Diego) and Kyle David Flanagan (Rancho Santa Margarita, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A protective waterproofing structure can include a waterproof membrane applied over a bed of the transportation structure. The protective waterproofing structure can include a layered membrane protection structure to protect the waterproof membrane. The layered protection structure can include a plurality of membrane protection layers. The plurality of me...