ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,957, issued on April 21, was assigned to ALPLA WERKE ALWIN LEHNER GMBH & CO KG (Hard, Austria).
"Pulp mixture" was invented by Irina Rauvanto (Sjundea, Finland) and Lars Hilden (Norrkoping, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a use of a pulp mixture for forming a container in a mould, which pulp mixture comprises: 65-90%, such as 70-84%, by dry weight of a first pulp having a Schopper-Riegler (SR) number of below 48, preferably below 40, more preferably below 30; and 10-35%, such as 16-30%, by dry weight of a second pulp having a Schopper-Riegler (SR) number of 60-90, preferably 70-90, more preferably 77-90. A pu...