Optics & Imaging
| Tue 19 May 2026
Alexandria, May 20 -- U.S. Patent and Trademark Office has received Dupont Specialty Materials Korea Ltd patent application for Organic Electroluminescent Device. Kim Bitnari, Cho Sang-hee, Seo Mi-ran, Park So-mi, Kim Ji-hee, Jang Sung-woo, Jung So-young, Lee Hyo-jung, Kang Hyun-ju, Kang Hee-ryong, Jun Ji-song and Lee Tae-jin de..