ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,356, issued on Nov. 11, was assigned to VERTEX DOWNHOLE TECHNOLOGIES INC. (Calgary, Canada).
"Top-mounted mud-telemetry pulser assembly for downhole communications, and downhole valve" was invented by Kyle Twynam (Calgary, Canada), Jaroslav Dobos (Calgary, Canada) and Carl Brown (Calgary, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A mud pulser for generating pulses in a fluid flow in a wellbore. The mud pulser has a valve housing having an uphole opening for receiving fluid flow, and a piston valve situated in a piston chamber is longitudinally moveable between an open and closed position by closing and opening a pilot port downhole of th...