ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,184, issued on April 21, was assigned to Halliburton Energy Services Inc. (Houston).

"Starting and stopping frac pumps" was invented by Bruce Carl Lucas (Duncan, Okla.), Timothy Holiman Hunter (Duncan, Okla.), Mark A. Hudson (Duncan, Okla.), Brad Robert Bull (Duncan, Okla.) and Madhur Kohli (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "Some implementations include a system comprising a first tubular fluidically connected with one or more frac pumps and one or more first flow control devices that are fluidically connected to a second tubular that is fluidically connected to a wellhead. The system also may include a third tubular fluidicall...