ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,934, issued on Oct. 28, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Submerged fin for wave energy conversion" was invented by Erling Tambs (Kristiansand, Norway), Jarle Hardeland Oevsthus (Hamresanden, Norway) and Alv Repstad (Kristiansand, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "An energy conversion system includes a power takeoff system, a fin connected to the power takeoff system, and a control system on board the fin. The fin is submerged below a surface of the sea, and the fin is configured to use subsurface wave motions to extract energy."

The patent was filed on Sept. 12, 2022, under Application No. 18/6...