ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,666, issued on March 18, was assigned to University of Wyoming (Laramie, Wyo.).

"Imidazole covalent organic framework" was invented by John Hoberg (Laramie, Wyo.), Bruce Parkinson (Laramie, Wyo.), Valerie Kuehl (Laramie, Wyo.) and Deana Sadrieva (Laramie, Wyo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composition of matter including a two-dimensional covalent organic imidazole framework (COF) polymer having an aromatic backbone and ordered nanometer sized pores that may be functionalized with a variety of functional groups. A filtration membrane having both high throughput and highly selective transport or rejection of a species of interest ...