US Patent Issued to L'Air Liquide Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges Claude on July 14 for "Integrated system and method for methane production using off gas recycling to anaerobic digester from a gas separation membrane unit" (Delaware Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,060, issued on July 14, was assigned to L'Air Liquide Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges Claude (Paris).

"Integrated system and method for methane production using off gas recycling to anaerobic digester from a gas separation membrane unit" was invented by Sudhir Kulkarni (Wilmington, Del.), Min Ho Maeng (Newark, Del.) and Shu Fang (Newark, Del.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Raw biogas from an anaerobic digester is fed to a membrane separation unit that produces methane rich biomethane and a CO2 rich permeate that is recycled to the anaerobic digester where it is mixed with the digestate."

The paten...