Patents
US 9856769 B2: Gas separation process using membranes with permeate sweep to remove CO2 from combustion exhaust
- Granted
- 2018-01-02
- Filed
- 2017-03-01 application 15446443
- Type
- Utility · 22 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A gas separation process for treating exhaust gases from combustion processes. The invention involves routing a first portion of the exhaust stream to a carbon dioxide capture step, while simultaneously flowing a second portion of the exhaust gas stream across the feed side of a membrane, flowing a sweep gas stream, usually air, across the permeate side, then passing the permeate/sweep gas back to the combustor.
Source: PVGPATDIS, file of 2026-04-10 (ipg180102.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 |
|---|---|---|---|---|
| Richard W. Baker | Palo Alto, CA | 35 | PVGPATDIS, file of 2026-04-10 | |
| Timothy C. Merkel | San Jose, CA | 28 | PVGPATDIS, file of 2026-04-10 | |
| Johannes G. Wijmans | Menlo Park, CA | 18 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F01N | Gas-flow silencers or exhaust apparatus for machines or engines in general; gas-flow silencers or exhaust apparatus for internal-combustion engines | F01N3/0857 | PVGPATDIS, file of 2026-04-10 |
| B01D | Separation | B01D53/1475 | PVGPATDIS, file of 2026-04-10 |
| F01K | Steam engine plants; steam accumulators; engine plants not otherwise provided for; engines using special working fluids or cycles | F01K5/00 | PVGPATDIS, file of 2026-04-10 |
| F02C | Gas-turbine plants; air intakes for jet-propulsion plants; controlling fuel supply in air-breathing jet-propulsion plants | F02C3/34 | PVGPATDIS, file of 2026-04-10 |
| F23C | Methods or apparatus for combustion using fluid fuel or solid fuel suspended in ; a carrier gas or; air | F23C9/00 | PVGPATDIS, file of 2026-04-10 |
| F05D | Indexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants | F05D2260/61 | PVGPATDIS, file of 2026-04-10 |
| F23J | Removal or treatment of combustion products or combustion residues; flues | F23J2215/50 | PVGPATDIS, file of 2026-04-10 |
| F23L | Supplying air or non-combustible liquids or gases to combustion apparatus in general ; valves or dampers specially adapted for controlling air supply or draught in combustion apparatus ; inducing draught in combustion apparatus; tops for chimneys or ventilating shafts; terminals for flues | F23L2900/07001 | PVGPATDIS, file of 2026-04-10 |
| Y02A | Technologies for adaptation to climate change | Y02A50/20 | PVGPATDIS, file of 2026-04-10 |
| Y02C | Capture, storage, sequestration or disposal of greenhouse gases [ghg] | Y02C20/40 | PVGPATDIS, file of 2026-04-10 |
| Y02E | Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution | Y02E20/16 | 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 |
|---|---|---|---|---|---|
| 2017-11-27 | Assignment Assignment of assignor's interest | BAKER, RICHARD W signed 2010-09-13 MERKEL, TIMOTHY C signed 2010-09-13 WIJMANS, JOHANNES G signed 2010-09-13 | MEMBRANE TECHNOLOGY AND RESEARCH, INC NEWARK, CA | 44227/890 | 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.