ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,375, issued on May 13, was assigned to Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V. (Munich).

"Method for producing a helix and permanent mold for casting a helix" was invented by Franz-Josef Wostmann (Bremen, Germany), Michael Heuser (Bremen, Germany) and Matthias Busse (Bremen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A permanent mold can include mold halves which can be joined together on a mold separation plane. The mold halves of the permanent mold are joined together such that the permanent mold has a cavity, which defines the shape of the helix or the shape of a bent-up helix, when the permanent mold is j...