ALEXANDRIA, Va., June 6 -- United States Patent no. 12,284,143, issued on April 22, was assigned to NEC Corp. (Tokyo).

"Chatbot system, option formation device, option formation method, and non-transitory computer-readable medium" was invented by Yasuhiro Sakamori (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A purpose of the present invention is to provide a chatbot system, an option formation device, an option formation method, and a non-transitory computer-readable medium that are capable of displaying suitable options at the top and making dialogue more efficient. A chatbot system (100) includes at least one memory configured to store an instruction, and at least one processor configured to execu...