ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,411, issued on March 18.
"Stable shaped alumina and method for producing same" was invented by Andrea Brasch (Meldorf, Germany), Angela Siegel (Hannover, Germany), Yanick Holzmann (Marne, Germany) and Stefan Howe (Sankt Michaelisdonn, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a calcined shaped alumina and to a method of preparing a calcined shaped alumina. The method comprises that the alumina in the alumina suspension is hydrothermally aged to have a specific crystallite size. This in turn produces a highly stable alumina in the form of a calcined shaped alumina particularly at temperatures of 1200deg ...