US Patent Issued to IHI on June 3 for "Laser welding method for repair, and laser welding repair device" (Japanese Inventors)

ALEXANDRIA, Va., June 4 -- United States Patent no. 12,318,866, issued on June 3, was assigned to IHI Corp. (Tokyo).

"Laser welding method for repair, and laser welding repair device" was invented by Koutarou Inose (Tokyo), Naoyuki Matsumoto (Tokyo) and Daiki Okita (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A laser welding repair device includes a laser oscillator, a laser head that condenses laser light from the laser oscillator to irradiate a repair portion, a temperature sensor that detects a temperature distribution of a steel material irradiated with the laser light, and a control unit. The control unit sets a spot diameter of the laser light to be less than 3 mm, moves the laser head and enl...