ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,412,328, issued on Sept. 9, was assigned to Roblox Corp. (San Mateo, Calif.).

"Primal solver for simulation and display of rigid bodies in a virtual environment" was invented by Christopher Giles (San Mateo, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Some implementations relate to methods, systems, and computer-readable media to display a rigid body object within a virtual environment. In some implementations, the method includes obtaining a model representation of the rigid body object, obtaining a state of the rigid body object in the virtual environment, determining a plurality of constraints that act on the rigid body object, determining...