Patents
US 11684894 B2: In situ fabrication of metal-organic framework films and mixed-matrix membranes
- Granted
- 2023-06-27
- Filed
- 2020-10-26 application 17080291
- Type
- Utility · 25 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Provided herein are in situ methods for fabricating a mixed-matrix membrane or a mixed-matrix hollow fiber membrane for increasing formation of zeolitic imidazolate framework nanoparticles inside the mixed-matrix membrane. Generally, in the method a polyimide polymer coated onto at least one support is hydrolzed with a base and the poly(amic acid)-salt film formed thereby undergoes ion exchange with a metal ion, treatment of the formed poly(amic acid)-metal salt film with an organic linker to produce metal-organic framework nanoparticles in situ, and imidization of the treated poly(amic acid)-metal salt film produces a polyimide/metal-organic framework mixed-matrix membrane or a mixed-matrix hollow fiber membrane module. Also provided is the mixed-matrix membrane and the polymer mixed-matrix hollow fiber membrane module fabricated by the methods and methods for separating a binary gas mixture via the fabricated mixed-matrix membrane.
Source: PVGPATDIS, file of 2026-04-10 (ipg230627.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Texas A&M University 14 patents | US company or organization | College Station, TX | TEXAS A & M UNIVERSITY Nonprofit EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Hae-Kwon Jeong | College Station, TX | 6 | PVGPATDIS, file of 2026-04-10 | |
| Mohamad Rezi Abdul Hamid | Kampung Kota Lama, MY | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D67/0079 | PVGPATDIS, file of 2026-04-10 |
| C07C | Acyclic or carbocyclic compounds | C07C7/144 | PVGPATDIS, file of 2026-04-10 |
| B82Y | Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures | B82Y30/00 | 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 |
|---|---|---|---|---|---|
| 2023-10-20 | Government interest Confirmatory license | TEXAS A&M UNIVERSITY signed 2021-06-09 | NATIONAL SCIENCE FOUNDATION ALEXANDRIA, VA | 65303/767 | ECORSEXC, file of 2026-09-25 |
| 2023-03-28 | Assignment Assignment of assignor's interest | JEONG, HAE-KWON signed 2020-10-23 HAMID, MOHAMAD REZI ABDUL signed 2020-10-26 | TEXAS A&M UNIVERSITY COLLEGE STATION, TX | 63135/53 | ECORSEXC, file of 2026-09-25 |
| 2022-09-20 | Government interest Confirmatory license | TEXAS ENGINEERING EXPERIMENT STATION signed 2021-06-09 | NATIONAL SCIENCE FOUNDATION ALEXANDRIA, VA | 61477/265 | ECORSEXC, file of 2026-09-25 |
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.