ALEXANDRIA, Va., March 31 -- United States Patent no. 12,591,759, issued on March 31, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Parallel and distributed processing of propositional logical neural networks" was invented by Venkatesan Thirumalai Chakaravarthy (Karnataka, India), Anamitra Roy Choudhury (Vasant Kunj, India), Naweed Aghmad Khan (Johannesburg, Canada), Francois Pierre Luus (Wierdapark, Canada) and Yogish Sabharwal (Gurgaon, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "An embodiment may include a processor that identifies a plurality of weights from the propositional logical neural network. The embodiment may convert the plurality of weights into a sparse matrix...