ALEXANDRIA, Va., April 2 -- United States Patent no. 12,263,447, issued on April 1.

"Composite ionomer membrane tubing modules and system and methods incorporating same" was invented by Bamdad Bahar (Georgetown, Del.), Harish Opadrishta (Dover, Del.) and William Parmelee (Orleans, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composite ion conducting tube is made by wrapping a support material or ion conducting sheet to from a tube having overlaps of layers that are bonded. The ion conducting sheet or tape used to make the tube may be very thin and the tube may be formed in situ by wrapping the support material and then coating with ion conducting polymer. The ion conducting tubes may be used in a p...