US Patent Issued to HOYA LENS THAILAND on Aug. 5 for "Polymerizable composition for optical article and optical article" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,347, issued on Aug. 5, was assigned to HOYA LENS THAILAND LTD. (Pathumthani, Thailand).

"Polymerizable composition for optical article and optical article" was invented by Takuya Shimada (Tokyo), Kei Kobayashi (Tokyo), Teruo Yamashita (Tokyo) and Tsuyoshi Watanabe (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a polymerizable composition for an optical article including a photochromic compound, a component A: an acyclic methacrylate having a molecular weight of 500 or more, and a component B: a hydroxy group-containing (meth)acrylate."

The patent was filed on March 28, 2022, under Application No. 17/705,954.

*For further informat...