ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,500, issued on March 17, was assigned to Atotech Deutschland Gmbh & Co. KG (Berlin).
"Aqueous alkaline cleaner solution for glass filler removal and method" was invented by Wolfgang Friz (Berlin), Laurence John Gregoriades (Berlin) and Stefan Kempa (Berlin).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an aqueous alkaline cleaner solution for glass filler removal comprising: (a) at least one non-ionic surfactant selected from the group consisting of saturated branched or unbranched C5 to C12 carboxylic acid or salt thereof, wherein the concentration of the (a) at least one surfactant is from 0.9 to 1.7 g/L; (b) at least one...