ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,219, issued on Sept. 16, was assigned to Packers Plus Energy Service Inc. (Calgary, Canada).

"Frangible well string port device" was invented by Mitchell Mueller (Tomball, Texas), Andrew Cayson (Cypress, Texas), Javier Bolivar (Tomball, Texas) and Matthew Skinner (Edmonton, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention comprises a novel nozzle for use in wellbore tubing strings. The nozzle has an annular cylindrical nozzle body surrounding a frangible material. The frangible material is bonded to the nozzle body forming a seal. When deployed in a well, the nozzle prevents fluidic communication between the inside of the tubing ...