ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,737, issued on May 19, was assigned to Inpria Corp. (Corvallis, Ore.).

"Radiation sensitive organotin compositions having oxygen heteroatoms in hydrocarbyl ligand" was invented by Robert E. Jilek (Philomath, Ore.), Brian J. Cardineau (Corvallis, Ore.), Lucy Su Xiao Huffman (Corvallis, Ore.) and Stephen T. Meyers (Corvallis, Ore.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Organotin compositions having the formula RSnL3 and corresponding synthetic methods are described. R includes aromatic, cyclic and/or halogenated ether moieties, or polyethers, and L includes hydrolysable groups. The organotin compositions may be formed as radiation-patternable c...