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. 09, 2017
Filed:
Oct. 23, 2015
Hao Zhang, Union City, CA (US);
Zhenjie He, Fremont, CA (US);
Timothy C Merkel, Menlo Park, CA (US);
Yoshiyuki Okamoto, Brooklyn, NY (US);
Yasuhiro Koike, Yokohama, JP;
Hao Zhang, Union City, CA (US);
Zhenjie He, Fremont, CA (US);
Timothy C Merkel, Menlo Park, CA (US);
Yoshiyuki Okamoto, Brooklyn, NY (US);
Yasuhiro Koike, Yokohama, JP;
Membrane Technology and Research, Inc., Newark, CA (US);
Abstract
A process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of partially fluorinated or perfluorinated dioxolane monomers and a second monomer, such as dioxane or a partially fluorinated dioxolane. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.