ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,931, issued on Dec. 23, was assigned to Moneyhun Equipment Sales & Services Co. Inc. (Rock Springs, Wyo.).

"Zero emission blow down system and method" was invented by David H Moneyhun (Rock Springs, Wyo.) and John Moneyhun (Rock Springs, Wyo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A zero emission blow down system with an initial, high-capacity, mobile and removable platform can be positioned at a well and coupled to a wellhead. The blow down system carries a separator and a bank of catalytic heaters to react with accumulated production gas to remove the production gas without venting to atmosphere so that the well can be serviced. The blow d...