ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,370, issued on June 17, was assigned to Sulzer Management AG (Winterthur, Switzerland).
"3D printing system for preparing a three-dimensional object" was invented by Stephen Shields (The Woodlands, Texas), Daniele Tammaro (Zurich, Switzerland), Ulla Trommsdorff (Zurich, Switzerland) and Claudio Walker (Winterthur, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A three-dimensional printing system for preparing a three-dimensional object made at least partially of an expanded polymer includes a printing device configured to prepare an expandable polymer melt and deposit a strand of expandable, expanding or expanded polymer onto a surface a...