Patents
US 9643124 B2: Gas separation membranes based on fluorinated and perfluorinated polymers
- Granted
- 2017-05-09
- Filed
- 2015-10-23 application 14921382
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
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®.
Source: PVGPATDIS, file of 2026-04-10 (ipg170509.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Membrane Technology and Research, Inc. 62 patents | US company or organization | Newark, CA | MEMBRANE TECHNOLOGY AND RESEARCH, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Hao Zhang | Union City, CA | 41 | PVGPATDIS, file of 2026-04-10 | |
| Zhenjie He | Fremont, CA | 7 | PVGPATDIS, file of 2026-04-10 | |
| Timothy C. Merkel | Menlo Park, CA | 28 | PVGPATDIS, file of 2026-04-10 | |
| Yoshiyuki Okamoto | Brooklyn, NY | 52 | PVGPATDIS, file of 2026-04-10 | |
| Yasuhiro Koike | Yokohama, JP | 50 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D53/228 | PVGPATDIS, file of 2026-04-10 |
| Y02C | Capture, storage, sequestration or disposal of greenhouse gases [ghg] | Y02C20/40 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2017-03-29 | Assignment Assignment of assignor's interest | OKAMOTO, YOSHI signed 2017-03-17 | NEW YORK UNIVERSITY NEW YORK, NY | 41783/616 | PASDL, file of 2026-10-15 |
| 2017-03-23 | Assignment Assignment of assignor's interest | HE, ZHENJIE signed 2016-04-20 ZHANG, HAO signed 2016-04-20 MERKEL, TIMOTHY C signed 2016-04-20 | MEMBRANE TECHNOLOGY AND RESEARCH, INC. NEWARK, CA | 41711/656 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.