US Patent Issued to HANWHA SOLUTIONS on May 19 for "Method for preparing sulfonated arylphosphine" (South Korean Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,572, issued on May 19, was assigned to HANWHA SOLUTIONS Corp. (Seoul, South Korea).

"Method for preparing sulfonated arylphosphine" was invented by Gyeongseon Jeong (Daejeon, South Korea), Shinbeom Lee (Daejeon, South Korea), Junhee Han (Daejeon, South Korea) and Keedo Han (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method of preparing sulfonated aryl phosphine, the method capable of preparing sulfonated aryl phosphine with high purity and high yield by efficiently removing sulfur trioxide generated during preparing sulfonated aryl phosphine using an extractant."

The patent was filed on Oct. 27, 2021, under App...