Sunday - October 4, 2026

Solvent-Based Oxygen Barrier Coating Composition

ALEXANDRIA, Virginia, Sept. 1 -- SIEGWERK DRUCKFARBEN AG & CO. KGAA, Siegburg, Germany has been assigned a patent (No. US 12723161 B2, initially filed Oct. 17, 2023) developed by three inventors Ashish Datt, West Des Moines, Iowa; Ayuna Tsyrenova, Urbandale, Iowa; and Hannah Rothfuss, Siegburg, Germany, for "Solvent-based oxygen barrier coating composition." . . .

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