ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,412, issued on Aug. 25, was assigned to Anthony Steven Froehler (Calgary, Canada).

"Fluid retention apparatus for fluid end of positive displacement pump and related method" was invented by Matthew Edward Kemp (Calgary, Canada) and Anthony Steven Froehler (Calgary, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fluid retention apparatus for a positive displacement pump used to transfer fluid from a supply to a target comprises (i) a sealing device configured to be received in a packing chamber of the pump and to matably receive a piston of the pump therethrough that reciprocates in a transfer chamber for generating suction and expulsion of ...