ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,748, issued on March 24, was assigned to Hitachi High-Tech Corp. (Tokyo).
"Structure for particle acceleration and charged particle beam apparatus" was invented by Ryo Sugiyama (Tokyo), Kenji Tanimoto (Tokyo) and Shuhei Ishikawa (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a structure for particle acceleration and a charged particle beam apparatus, which enable the suppression of electric field concentration occurring near a negative electrode part. The structure for particle acceleration includes: a ceramic body 1 having a through hole 10 formed by an inner wall surface; and a negative electrode 2 and a positive electrode 3 w...