ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,482, issued on May 27, was assigned to MITSUBISHI HEAVY INDUSTRIES COMPRESSOR Corp. (Tokyo).
"Repair method of rotor" was invented by Kohei Ogawa (Hiroshima, Japan), Hiroaki Oka (Hiroshima, Japan), Hiroshi Nakajima (Hiroshima, Japan) and Koshiro Niihara (Hiroshima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A repair method is a repair method of a rotor including a rotor body extending in an axial direction about an axis and a plurality of impellers arranged in the axial direction and fixed to the rotor body, the repair method including: a step of performing welding on a repair area of the rotor body to fill a damaged portion with a welded ...