ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,659, issued on March 25, was assigned to FERROTEC (USA) Corp. (Santa Clara, Calif.).

"Crucible cover for coating with an electron beam source" was invented by Cris Kroneberger (Livermore, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cover arrangement comprised of at least two pieces for covering a crucible within an electron beam source assembly. The cover includes a cover body and a cover insert to be separate from and carried by the cover body, when the cover body is raised and lowered. This arrangement also allows the cover insert to be lowered until it comes to rest on top of the crucible. Upon contact between the cover insert and th...