ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,947, issued on March 25, was assigned to The Abell Foundation Inc. (Baltimore).

"Ocean thermal energy conversion power plant" was invented by Barry R. Cole (Mineral, Va.), Jonathan M. Ross (Arnold, Md.), Andrew Rekret (Toronto), Henry Sibenaller (Greensburg, Pa.), William Schulz (Baltimore), Russ Krull (Centreville, Va.) and Laurence Jay Shapiro (Fair Lawn, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An offshore power generation structure comprising a submerged portion having a first deck portion comprising an integral multi-stage evaporator system, a second deck portion comprising an integral multi-stage condensing system, a third deck por...