ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,977, issued on March 3, was assigned to The Gillette Co. LLC (Boston).
"Razor blade" was invented by Oliver Heinz Claus (Walpole, Mass.), Eduardo Villarreal (Needham, Mass.), Neville Sonnenberg (Newton, Mass.), Joseph Allan Depuydt (Salem, N.H.), Dieter Heinz Josef Gross (Mainz, Germany) and Marko Limpert-Kiesel (Eschborn, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A razor blade. The razor blade includes a substrate having a first facet and a second facet that converge to define a cutting edge. A first textured surface is formed on the first facet and includes a first plurality of elements with a depth between about 0.01 micro metre and ...