ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,670, issued on April 21, was assigned to Stearns Conrad and Schmidt Consulting Engineers Inc. (Reston, Va.).

"Biogas halogenated volatile organic compound and acid removal systems and methods" was invented by Jeffrey Grill (Cypress, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method to produce an acid-depleted biogas is described. The method includes supplying biogas to a biogas acid removal system to produce an acid-depleted biogas. Biogas pre-processing, post-processing, and a product production system may be integrated with the biogas acid removal process to produce a product. A two-stage volatile organic compound removal process is ...