B01D 2252/2056
Sulfur compounds
Official title: Sulfur compounds, e.g. Sulfolane, thiols
B01D2252/2056 (Sulfur compounds) appears on 68 US grants and 99 published applications in this corpus.
Search patents in B01D- Granted patents
- 68
- Published applications
- 99
- Assignees
- 61
- Inventors
- 217
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2010 | 0 | 1 |
| 2011 | 0 | 4 |
| 2012 | 1 | 18 |
| 2013 | 6 | 5 |
| 2014 | 7 | 3 |
| 2015 | 12 | 12 |
| 2016 | 2 | 8 |
| 2017 | 5 | 4 |
| 2018 | 5 | 17 |
| 2019 | 6 | 4 |
| 2020 | 7 | 4 |
| 2021 | 8 | 7 |
| 2022 | 2 | 3 |
| 2023 | 1 | 3 |
| 2024 | 1 | 2 |
| 2025 | 5 | 2 |
| 2026 | 0 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Removal of acid gases from gaseous mixtures containing them30 Dec 2025US 12,509,639 B2ENI S. p. A.
- Removal of mercury in a gas dehydration process using thermally stable chemical additives2 Dec 2025US 12,485,383 B2Chevron U.S.A.Inc.
- Quick response, transportable, stand-alone system for removing volatile compounds from contaminated fluid streams, and method of use thereof18 Nov 2025US 12,473,212 B2WP&E Technologies and Solutions, LLC
- Acid gas scrubbing methods featuring amine phase separation for hydrogen sulfide capture10 Jun 2025US 12,325,004 B2ExxonMobil Technology and Engineering Company
- Simulation of unit operations of a chemical plant for acid gas removal22 Apr 2025US 12,282,722 B2BASF SE
- Reducing consumption of sulfiding agent in hydroprocessing of biofeedstocks25 Jun 2026US 2026/0175163 A1ExxonMobil Technology and Engineering Company
- Carbon dioxide capture method30 Apr 2026US 2026/0115644 A1University of Science and Technology of China
- Acid Gas Scrubbing Methods Featuring Amine Phase Separation for Hydrogen Sulfide Capture6 Nov 2025US 2025/0339809 A1ExxonMobil Technology and Engineering Company
- Removal of mercury in a gas dehydration process using thermally stable chemical additives20 Mar 2025US 2025/0090997 A1Chevron U.S.A.Inc.
- Carbon dioxide absorber28 Mar 2024US 2024/0100473 A1Mitsubishi Gas Chemical Company, Inc.
Most cited
By later US patents
- CO2 absorption from gas mixtures using an aqueous solution of 4-amino-2,2,6,6-tetramethylpiperidine15US 8,500,892 B2Evonik Degussa GmbH · 2013
- CO2 absorption from gas mixtures using an aqueous solution of 4-amino-2,2,6,6-tetramethylpiperidine13US 8,500,867 B2Evonik Degussa GmbH · 2013
- CO2 absorption from gas mixtures using an aqueous solution of 4-amino-2,2,6,6-tetramethyl piperidine12US 8,623,123 B2Evonik Degussa GmbH · 2014
- Method for improving total energy demand in a post-combustion carbon capture process with ionic absorbent11US 9,205,371 B2Chevron U.S.A.Inc. · 2015
- Methods of controlling mercury emission10US 8,632,742 B2Nalco Company · 2014