ALEXANDRIA, Va., March 26 -- United States Patent no. 12,256,771, issued on March 25, was assigned to DELFORTGROUP AG (Traun, Austria).
"Lightweight separating base paper" was invented by Tuomas Turtola (Lukana, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a separating base paper, having a mass per unit area of at least 25 g/m2 and at most 40 g/m2 and a density of at least 0.90 g/cm3 and at most 1.15 g/cm3. The separating base paper comprises at least 50 wt % of long-fiber pulp and is coated on at least one side with at least two coatings. The first coating is located between a paper surface and the second coating. The second coating is a topmost coating and comprises a wat...