ALEXANDRIA, Va., June 2 -- United States Patent no. 12,643,981, issued on June 2, was assigned to PROMERUS LLC (Akron, Ohio).

"Unsaturated cyclic anhydride end capped polyimides and polyamic acids and photosensitive compositions thereof" was invented by Pramod Kandanarachchi (Akron, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments in accordance with the present invention encompass polyamic acid or polyimide polymers containing a reactive unsaturated cyclic anhydride end group as well as photosensitive compositions made therefrom which are useful for forming films that can be patterned to create structures for microelectronic devices, microelectronic packaging, microelectromechanical systems, o...