Patents
US 12017180 B2: Improving sulfur recovery operations with processes based on novel CO2 over SO2 selective membranes and its combinations with SO2 over CO2 selective membranes
- Granted
- 2024-06-25
- Filed
- 2021-06-24 application 17357567
- Type
- Utility · 37 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Methods and systems for recovering sulfur dioxide from a Claus unit process emissions stream are provided. The method comprises the steps of generating a process emissions stream from a thermal oxidizer or other combustion device, introducing the emissions stream to an SO2 removal system, introducing the SO2 rich stream from the SO2 removal system to a CO2 removal system, and introducing an enriched SO2 stream back to the Claus unit. The SO2 removal system can include one or more SO2 selective membranes. The CO2 removal system can include one or more CO2 selective membranes.
Source: PVGPATDIS, file of 2026-04-10 (ipg240625.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| SAUDI ARABIAN OIL COMPANY 7,465 patents | Foreign company or organization | Dhahran, SA | PVGPATDIS, file of 2026-04-10 | |
| 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 |
|---|---|---|---|---|
| Milind M. Vaidya | Dhahran, SA | 38 | PVGPATDIS, file of 2026-04-10 | |
| Sebastien A. Duval | Dhahran, SA | 66 | PVGPATDIS, file of 2026-04-10 | |
| Feras Hamad | Dhahran, SA | 17 | PVGPATDIS, file of 2026-04-10 | |
| Richard W. Baker | Newark, CA | 35 | PVGPATDIS, file of 2026-04-10 | |
| Tim Merkel | Newark, CA | 5 | PVGPATDIS, file of 2026-04-10 | |
| Kaaeid A. Lokhandwala | Newark, CA | 10 | PVGPATDIS, file of 2026-04-10 | |
| Ahmad Bahamdan | Dhahran, SA | 15 | PVGPATDIS, file of 2026-04-10 | |
| Faisal D. Al-Otaibi | Dhahran, SA | 8 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D53/226 | PVGPATDIS, file of 2026-04-10 |
| C01B | Non-metallic elements; compounds thereof; ; metalloids or compounds thereof not covered by subclass c01c | C01B17/04 | 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 |
|---|---|---|---|---|---|
| 2021-06-24 | Assignment Assignment of assignor's interest | BAKER, RICHARD signed 2020-03-29 LOKHANDWALA, KAAEID signed 2021-03-29 MERKEL, TIM signed 2021-03-29 | MEMBRANE TECHNOLOGY AND RESEARCH, INC NEWARK, CA | 56661/80 | ECORSEXC, file of 2026-09-25 |
| 2021-06-24 | Assignment Assignment of assignor's interest | BAHAMDAN, AHMAD signed 2020-11-01 VAIDYA, MILIND signed 2020-11-01 HAMAD, FERAS signed 2020-11-08 DUVAL, SEBASTIEN signed 2020-11-09 AL-OTAIBI, FAISAL signed 2021-06-05 | SAUDI ARABIAN OIL COMPANY DHAHRAN | 56660/978 | 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.