ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,621, issued on Sept. 22, was assigned to General Dynamics Ordnance and Tactical Systems-Canada Inc. (Repentigny, Canada).

"Non-lethal marking composition, projectile, and cartridge" was invented by Charles-Olivier Gilbert (Repentigny, Canada), Sophie Dufort (Repentigny, Canada), Marc Palardy (Repentigny, Canada), Isabelle Theobald (Repentigny, Canada), Francois Rouillard (Repentigny, Canada) and Mathieu Desrosiers (Repentigny, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A non-lethal marking projectile is disclosed. The marking projectile includes a frangible polymeric shell that has an interior cavity and is configured to engage rifling i...