US Patent Issued to Bridgestone Europe NV/SA on May 26 for "High impermeability innerliner compound and method for the production thereof" (Italian Inventors)

ALEXANDRIA, Va., May 26 -- United States Patent no. 12,637,554, issued on May 26, was assigned to Bridgestone Europe NV/SA (Zaventem, Belgium).

"High impermeability innerliner compound and method for the production thereof" was invented by Paolo Fiorenza (Rome) and Gianpaolo Chieffi (Rome).

According to the abstract* released by the U.S. Patent & Trademark Office: "Method for the manufacture of the innerliner compound comprising: -a first mixing step wherein at least one cross-linkable unsaturated chain polymeric base and one filler system are mixed together; -a final mixing step wherein a vulcanization system is added and mixed with the mixture deriving from an earlier mixing step; and -an intermediate mixing step, interposed between sai...