ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,463, issued on Nov. 18, was assigned to DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES (Liaoning, China).

"Protective film, batch preparation method therefor and use thereof" was invented by Jinkai Hao (Liaoning, China), Hongjie Zhang (Liaoning, China) and Zhigang Shao (Liaoning, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A protective film sequentially includes a release film, a low-viscosity silica gel layer, a high-viscosity silica gel layer and a substrate from top to bottom. A high-viscosity organosilicon adhesive, a hydroxyl-terminated polydimethylsiloxane, a curing agent, an additive and a solvent are coated on a p...