ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,462,991, issued on Nov. 4, was assigned to Siemens Industry Inc. (Alpharetta, Ga.).

"Erosion resistant composite metal coating for plates of an arc chute assembly for a circuit breaker" was invented by Roberto Carlos Hernandez Maya (Nuevo Leon, Mexico).

According to the abstract* released by the U.S. Patent & Trademark Office: "An arc plate for a circuit breaker includes a body and a magnetic coating that covers an exterior of the body. The magnetic coating is a metal matrix composite including from 80 to 92 volume percentage of a metal that is magnetic, and from 8 to 20 volume percentage of particles. The particles have a higher melting temperature than the metal."

The patent was fi...