US Patent Issued to NGK INSULATORS on March 31 for "Refining method" (Japanese Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,075, issued on March 31, was assigned to NGK INSULATORS Ltd. (Nagoya, Japan).

"Refining method" was invented by Norimitsu Tohnai (Suita, Japan), Daiki Kato (Nagoya, Japan), Yoshio Kondo (Nagoya, Japan) and Kazunari Yamada (Nagoya, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A refining method according to the present invention is a refining method for crystallizing a compound with at least one crystal form, including: setting, as a target wavelength, a specific infrared wavelength at which a specific crystal form precipitates from a solution of the compound dissolved in a solvent; and using an infrared radiation apparatus capable of emittin...