ALEXANDRIA, Va., March 17 -- United States Patent no. RE50,827, issued on March 17, was assigned to Innovex International Inc. (Houston).

"One trip lockdown sleeve and running tool" was invented by Rodrigo Albani Queiroz (Rio de Janeiro, Brazil), Carlos Eduardo Martins Gaban (Rio de Janeiro, Brazil), Sergio Campelo Almeida (Rio de Janeiro, Brazil), Guilherme Pedro Eppinghaus Neto (Rio de Janeiro, Brazil) and Fife Ellis (Cypress, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lockdown sleeve and a running tool that may be used to install the lockdown sleeve within a wellhead in a single trip are provided. The lockdown sleeve, may include two pieces that are rotatably coupled together via threads such ...