ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,767, issued on May 6, was assigned to Halliburton Energy Services Inc. (Houston).
"High strength stainless steel material" was invented by Karthik Krishnan (Little Elm, Texas), Chad W. Glaesman (Singapore) and Arpana Singh (Singapore).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for improving a toughness and a strength of a stainless steel material are described herein. For example, a high strength stainless steel material can comprise at least 11 wt. % Cr, between 0.01 wt. % and 1.0 wt. % Ni, more 0 wt. % Mo, more than 0 wt. % W, more than 0 wt. % Ti, more than 0 wt. % Nb, and more than 0 wt. % V. In some examples, the high strength stainl...