ALEXANDRIA, Va., July 21 -- United States Patent no. 12,688,368, issued on July 21, was assigned to Prometric LLC (Nottingham, Del.).

"Tagging for subject matter or learning schema" was invented by Jesse Andrew Lewis Hamer (Iowa City, Iowa), Tiago Lima Almeida (Garopaba, Brazil), Charles Foster (Oakland, Calif.), Nicholas Koprowicz (Denver), Lucas Cezimbra (Garopaba, Brazil), Claudio Souza (Garopaba, Brazil), Saad Masood Khan (Yardley, Pa.) and Sara Vispoel (Iowa City, Iowa).

According to the abstract* released by the U.S. Patent & Trademark Office: "An example method of classifying user content based on a set of standards is described herein. The method includes receiving the user content, generating numeric representations of the user c...