ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,166, issued on May 13, was assigned to T.EN Process Technology Inc. (Houston).

"Processes for making ethylene glycol and/or propylene glycol from aldose- and/or ketose-yielding carbohydrates with integrated tungsten catalyst recovery" was invented by Thomas P. Binder (Marion, Iowa) and Louis A. Kapicak (Cross Lanes, W.va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Integrated processes are disclosed for the catalytic conversion of carbohydrate to ethylene glycol and/or propylene glycol using a homogeneous, tungsten-containing retro-aldol catalyst. In these processes, the carbohydrate is subjected to retro-aldol conversion and hydrogenation to pro...