ALEXANDRIA, Va., March 31 -- United States Patent no. 12,588,690, issued on March 31, was assigned to Mars Inc. (McLean, Va.).

"Net energy model for companion animals and methods" was invented by Natalie Julia Asaro (Guelph, Canada), Wilfredo Daniel Mansilla Tafur (Guelph, Canada), David John Seymour (Guelph, Canada), John Paul Cant (Guelph, Canada) and Anna Katharine Shoveller (Guelph, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A model for predicting the net energy available to a companion animal from a pet food is provided. The model can be used to determine the appropriate amount of a food to feed a companion animal, and/or to provide feeding guidelines for any type of food, for any companion a...