US Patent Issued to Bridgestone Europe NV/SA on June 30 for "Method for manufacturing asphalt comprising rubber from end-of-life tires" (Italian Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,686, issued on June 30, was assigned to Bridgestone Europe NV/SA (Zaventem, Belgium).

"Method for manufacturing asphalt comprising rubber from end-of-life tires" was invented by Luca Lelio (Rome), Massimo Losa (Rome) and Pietro Leandri (Rome).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing asphalt comprising a heat treatment step, wherein the rubber granules deriving from an end-of-life tyre granulation process are subjected to a temperature of between 80 and 300deg C., for a period of time necessary in order to obtain rubber granules with a density of between 1.0 and 1.5 g/cm3; and a mixing step wherein the rubber granules from...