US Patent Issued to Sumitomo Chemical, RIKEN on March 24 for "Methods for producing retinal tissue and retina-related cell" (Japanese Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,582,677, issued on March 24, was assigned to Sumitomo Chemical Co. Ltd. (Tokyo) and RIKEN (Wako, Japan).

"Methods for producing retinal tissue and retina-related cell" was invented by Tokushige Nakano (Osaka, Japan), Satoshi Ando (Osaka, Japan), Yoshiki Sasai (Wako, Japan) and Mototsugu Eiraku (Wako, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a method for producing a retinal tissue by (1) subjecting pluripotent stem cells to floating culture in a serum-free medium containing a substance inhibiting the Wnt signal pathway to form an aggregate of pluripotent stem cells, (2) subjecting the aggregate to floating culture in a...