ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,606, issued on Oct. 7, was assigned to Silverwell Technology Ltd. (Cambridge, Great Britain).

"Dual direction lift gas valve with cavitation prevention" was invented by Joel David Shaw (Houston), Reece Eagles (Houston), Greg Marshall (Houston) and Gerard Patterson (Housto, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bi-directional valve with valve elements having compliant features biasing them together to maintain a sealing interface that defines a fluid communication barrier within the valve. Parting the valve elements from one another removes the sealing interface to allow fluid communication across the valve elements. The valve include...