ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,743, issued on Sept. 2, was assigned to NCS MULTISTAGE INC. (Calgary, Canada).
"Rupture disc assembly" was invented by Michael Werries (Calgary, Canada), Brock Gillis (Calgary, Canada), Daniel Stannus (Calgary, Canada), Timothy Johnson (Calgary, Canada) and Masoud Kalantari (Calgary, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a rupture disc assembly for use in making a temporary seal in a vessel such as a casing string. The rupture disc assembly may generally include (A) a rupture disc having a side surface having a shallow taper inward towards a bottom surface of the rupture disc (B) an actuating mechanism including (i) an o...