ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,948, issued on May 26, was assigned to Response Technologies LLC (Coventry, R.I.).

"Tear resistant fuel cells for aircraft" was invented by David Allen Pettey (Portsmouth, R.I.) and Edmund Francis Bard (Cumberland, R.I.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel cell for an aircraft includes a textile substrate having a plurality of unidirectional textile plies that are bonded together. An outer shell layer is positioned exteriorly of the textile substrate. The plurality of unidirectional textile plies includes first and second ripstop plies each having a yarn coupled thereto in a ripstop pattern. The ripstop pattern of the first ripstop p...