ALEXANDRIA, Va., April 2 -- United States Patent no. 12,263,558, issued on April 1, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Camouflage for abrasive articles" was invented by Joseph B. Eckel (Vadnais Heights, Minn.), Aaron K. Nienaber (Lake Elmo, Minn.), Thomas J. Nelson (Woodbury, Minn.), Amelia W. Koenig (Minneapolis) and Ann M. Hawkins (Lake Elmo, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Abrasive articles and associated methods are shown that include one or more camouflaging layers that can be applied to a portion of the abrasive article. The one or more camouflaging layers can be applied over the size coat layer as a discontinuous colored layer covering a portion of th...