US Patent Issued to AHLSTROM on March 31 for "Filter sheet media and method for manufacturing a filter sheet media" (Italian, Finnish Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,342, issued on March 31, was assigned to AHLSTROM OYJ (Helsinki).

"Filter sheet media and method for manufacturing a filter sheet media" was invented by Harri Niemela (Kouvola, Finland), Hanna Rahiala (Kotka, Finland), Rami Haakana (Kotka, Finland), Juha Sorvari (Kotka, Finland), Andrea Corradi (Turin, Italy), Andrea Grosso (Turin, Italy), Andrea Frillici (Sassoferrato, Italy) and Francesco Stopponi (Fabriano, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A filter sheet media (1) for air/gas filtering applications fulfilling the criteria of standard EN779:2012 class M6 filter media, the filter sheet media (1) comprises: a first group of glas...