US Patent Issued to Fisher-Rosemount Systems on May 27 for "Secondary control for de-energizing safety field devices with digital protocols" (Texas Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,469, issued on May 27, was assigned to Fisher-Rosemount Systems Inc. (Round Rock, Texas).

"Secondary control for de-energizing safety field devices with digital protocols" was invented by Sergio Diaz (Round Rock, Texas) and Gary Law (Round Rock, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A two-wire routing device includes an upstream communication interface for communication with a controller, a two-wire communication and power interface configured to convey communication and power to a field device over a two-wire link, and a router electronic controller. The router electronic controller is coupled to the upstream communication interface ...