ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,864, issued on Dec. 9.
"Apparatus and process for liquefying gases" was invented by Terrence J. Ebert (Freemansburg, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquefier device which may be a retrofit to an air separation plant or utilized as part of a new design. The flow needed for the liquefier comes from an air separation plant running in a maxim oxygen state, in a stable mode. The three gas flows are low pressure oxygen, low pressure nitrogen, and higher pressure nitrogen. All of the flows are found on the side of the main heat exchanger with a temperature of about 37 degrees Fahrenheit. All of the gases put into the liquefier come out...