Patents
US 9975084 B2: Fluid separation processes using membranes based on fluorinated and perfluorinated polymers
- Granted
- 2018-05-22
- Filed
- 2017-05-30 application 15608399
- Type
- Utility · 10 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A process for separating components or a fluid mixture using membranes comprising a selective layer made from copolymers of an amorphous per fluorinated dioxolane and a fluorovinyl monomer. The resulting membranes have superior selectivity performance for certain fluid components of interest while maintaining fast permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.
Source: PVGPATDIS, file of 2026-04-10 (ipg180522.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 |
| New York University 967 patents | US company or organization | New York, NY | New York University College or university EXACT high confidence: identical full name and state NEW YORK UNIVERSITY Nonprofit EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Timothy C. Merkel | San Jose, CA | 28 | PVGPATDIS, file of 2026-04-10 | |
| Hao Zhang | Fremont, CA | 41 | PVGPATDIS, file of 2026-04-10 | |
| Zhenjie He | Fremont, CA | 7 | PVGPATDIS, file of 2026-04-10 | |
| Johannes G. Wijmans | Menlo Park, CA | 18 | PVGPATDIS, file of 2026-04-10 | |
| Yoshiyuki Okamoto | Brooklyn, NY | 52 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D53/228 | PVGPATDIS, file of 2026-04-10 |
| C01B | Non-metallic elements; compounds thereof; ; metalloids or compounds thereof not covered by subclass c01c | C01B3/503 | PVGPATDIS, file of 2026-04-10 |
| C07C | Acyclic or carbocyclic compounds | C07C7/144 | PVGPATDIS, file of 2026-04-10 |
| C10L | Fuels not otherwise provided for; natural gas; synthetic natural gas obtained by processes not covered by subclasses c10g or c10k; liquified petroleum gas; use of additives to fuels or fires; fire-lighters | C10L3/104 | PVGPATDIS, file of 2026-04-10 |
| Y02C | Capture, storage, sequestration or disposal of greenhouse gases [ghg] | Y02C20/20 | PVGPATDIS, file of 2026-04-10 |
| Y02P | Climate change mitigation technologies in the production or processing of goods | Y02P20/151 | 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 |
|---|---|---|---|---|---|
| 2018-03-14 | Assignment Assignment of assignor's interest | ZHANG, HAO signed 2016-04-20 OKAMOTO, YOSHI signed 2016-12-27 MERKEL, TIMOTHY C signed 2016-04-20 HE, ZHENJIE signed 2016-04-20 WIJMANS, JOHANNES G signed 2018-03-14 | MEMBRANE TECHNOLOGY AND RESEARCH, INC. NEWARK, CA NEW YORK UNIVERSITY NEW YORK, NY | 45208/217 | 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.