ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,976, issued on Dec. 30, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).

"Processes for chemical dosing prior to the pad" was invented by Dawit Yenesew Dagnaw (San Ramon, Calif.), Yifan Li (San Ramon, Calif.), Brian Paul Price (San Ramon, Calif.), Nabijan Nizamidin (San Ramon, Calif.), Wei Shi (San Ramon, Calif.), Omar Visairo (San Ramon, Calif.), Kristen Anne Belcourt (San Ramon, Calif.), Leonardo F. Chaves Leal (San Ramon, Calif.), Aleisha Nichole Guiler (San Ramon, Calif.), Amos Sunghyun Kim (San Ramon, Calif.) and Neil Robert Steil Dilorenzo (San Ramon, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Processes for adding a chemical...