The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2025
Filed:
Dec. 29, 2022
Chromis Fiberoptics, Inc., Warren, NJ (US);
University of Kansas, Lawrence, KS (US);
Christopher P. Junk, Wilmington, DE (US);
Whitney Ryan White, Watchung, NJ (US);
Mark Brandon Shiflett, Lawrence, KS (US);
Abby Noelle Harders, Lawrence, KS (US);
Chromis Fiberoptics, Inc., Warren, NJ (US);
University of Kansas, Lawrence, KS (US);
Abstract
Described herein are separation articles such as, for example, films, membranes and the like separating at least one component from a gaseous mixture comprising two or more components comprising difluoromethane (HFC-32, CHF) and pentafluoroethane (HFC-125, CFH). The disclosed articles include a 'selective layer' that is selectively permeable for the desired component to be separated from the gas mixture. The selective layer is composed of an amorphous fluorinated copolymer. Optionally, the article may include other layers which serve various purposes such as, for example, a porous support layer, a “gutter layer,” which allows the permeate gas to pass from the selective layer to the porous layer with minimal flow impedance, and a protective layer, which protects the selective layer from fouling. Each component of the separation articles described herein and methods for making and using the same are provided below.