US Patent Issued to Sumitomo Chemical on April 22 for "Light emitting device and production method thereof, and composition for light emitting device and production method thereof" (Japanese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,284,904, issued on April 22, was assigned to Sumitomo Chemical Co. Ltd. (Tokyo).

"Light emitting device and production method thereof, and composition for light emitting device and production method thereof" was invented by Toshiaki Sasada (Tsukuba, Japan) and Ryuji Matsumoto (Nomi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light emitting device having an anode, a cathode, and an organic layer disposed between the anode and the cathode and containing a composition is described. The composition contains a compound (A) represented by the formula (FH) and a compound (B) having a condensed hetero ring skeleton (b) containing a boron atom and a n...