ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,969, issued on July 29, was assigned to NCS MULTISTAGE INC. (Calgary, Canada).
"Downhole flow controller" was invented by Stanley Mberia (Calgary, Canada) and Doug Brunskill (Calgary, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A flow control apparatus for producing hydrocarbon material from a subterranean formation is disclosed. The apparatus includes a housing that defines a housing passage, and a flow communicator that extends through the housing for effecting fluid communication between the housing passage and the subterranean formation. The apparatus includes a flow controller within the housing for modulating flow communication betwe...