ALEXANDRIA, Va., July 9 -- United States Patent no. 12,350,837, issued on July 8, was assigned to Ghost Robotics Corp. (Philadelphia).

"Method to improve walking performance of quadrupeds over soft surfaces" was invented by Avik De (Philadelphia) and Jeffrey Duperret (Philadelphia).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention pertains to a method for a quadruped robot to navigate through granular media, such as deep sand for providing improvements in the walking performance over various types of granular media. In particular, the present invention proposes reducing the assumed coefficient of friction about the ground, impacting the ground harder than nominal in the vertical direction a...