ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,484, issued on Jan. 28, was assigned to CHAMPIONX LLC (Sugar Land, Texas).
"Ball check-valve for linear reciprocating downhole pumps" was invented by Juan Felipe Correa Pugliese (Fort Worth, Texas), Ramamurthy Narasimhan (Bangalore, India), Riyadh Salloom (Arlington, Texas), Randy De Werff (Burleson, Texas), Bradley C. Rogers (Burleson, Texas), Jimmy Kemp (Levelland, Texas) and Matthew Bishop (Burleson, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a ball check-valve assembly comprising a ball; a casing comprising an outer surface and defining an internal cavity extending within the casing, the internal cavit...