ALEXANDRIA, Va., June 2 -- United States Patent no. 12,643,973, issued on June 2, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).

"Resin composition, optical fiber, and method for producing optical fiber" was invented by Yuya Homma (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A resin composition for secondary coating of an optical fiber includes a photopolymerizable compound including a urethane (meth)acrylamide, and a photopolymerization initiator. The urethane (meth)acrylamide has a (meth)acrylamide group at at least one end of a urethane bond."

The patent was filed on Sept. 17, 2021, under Application No. 18/029,404.

*For further information, including images, charts an...