ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,959, issued on Sept. 15, was assigned to Halliburton Energy Services Inc. (Houston).

"Liner hanger having expandable sleeve" was invented by Jalpan Piyush Dave (Singapore), Atharv Abhijit Naik (Singapore) and Nithin Kumar Gupta Dachepally (Singapore).

According to the abstract* released by the U.S. Patent & Trademark Office: "A variety of methods and apparatus are disclosed, including, an expandable liner hanger and deploying an expandable liner hanger. The expandable liner includes an expandable sealing sleeve attached to a body of the expandable liner hanger to engage a casing in a wellbore to form a seal between the expandable liner hanger and the casing, the expandable seali...