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:
May. 26, 2026
Filed:
Sep. 29, 2025
South 8 Technologies, Inc., San Diego, CA (US);
Cyrus Rustomji, San Diego, CA (US);
Jungwoo Lee, San Diego, CA (US);
Jim Royer, San Diego, CA (US);
Jeremy Intrator, Carlsbad, CA (US);
SOUTH 8 TECHNOLOGIES, INC., San Diego, CA (US);
Abstract
A method and system for purifying methyl fluoride (MeF) by removing dimethyl ether (MeO) using a lithium salt sorbent, such as LiFSI or LiTFSI, are disclosed. Contaminated MeF is contacted with the sorbent, which preferentially adsorbs MeO due to strong Lewis acid-base interactions, yielding purified MeF. The process may involve flowing through a sorbent bed, cryogenic collection, temperature differentials, or pumping, with optional multiple cycles for enhanced purity. This approach provides superior efficiency and purity compared to conventional methods, with experimental reductions up to 80% in MeO content. Alternative salts and porous supports are also provided.