ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,878, issued on May 27, was assigned to Vulcan Completion Products UK Ltd. (Aberdeen, Great Britain).
"Centraliser" was invented by Ian Kirk (Aberdeen, Great Britain), Andrew Kirk (Aberdeen, Great Britain) and Nathan Kirk (Aberdeen, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A centraliser (10) for use in centralising tubing (12) in a bore (W) comprises a first end collar (14), a second end collar (16) and a number of elongate strut members (18). The strut members (18) are interposed between the first end collar (14) and the second end collar (16) and are circumferentially arranged and spaced around the first end collar (14) and seco...