ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,211,954, issued on Jan. 28, was assigned to SEIKO EPSON Corp. (Tokyo) and SOPHIA SCHOOL Corp. (Tokyo).
"Light emitting apparatus and projector" was invented by Yohei Nakagawa (Tokyo-to, Japan) and Katsumi Kishino (Akiruno, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light emitting apparatus includes a laminated structure including a plurality of columnar portions. The plurality of columnar portions each includes a first semiconductor layer, a second semiconductor layer different from the first semiconductor layer in terms of conductivity type, and a light emitting layer provided between the first semiconductor layer and the second semiconduct...