US Patent Issued to L'Air Liquide Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude on March 31 for "Nitrogen generating device and nitrogen generating method" (Japanese Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,758, issued on March 31, was assigned to L'Air Liquide Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude (Paris).

"Nitrogen generating device and nitrogen generating method" was invented by Kenji Hirose (Kobe, Japan) and Daisuke Nagata (Kobe, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A nitrogen generating device comprises: a main heat exchanger; a nitrogen distillation column; at least one nitrogen condenser; a compressor; an expansion turbine; a rotation control unit for controlling rotation with respect to a rotating shaft connecting the compressor and the expansion turbine; a pressure measuring unit for measur...