B01D 2252/2053
Other nitrogen compounds
B01D2252/2053 (Other nitrogen compounds) appears on 58 US grants and 84 published applications in this corpus.
Search patents in B01D- Granted patents
- 58
- Published applications
- 84
- Assignees
- 52
- Inventors
- 181
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 3 | 4 |
| 2013 | 3 | 6 |
| 2014 | 3 | 2 |
| 2015 | 0 | 7 |
| 2016 | 3 | 9 |
| 2017 | 7 | 7 |
| 2018 | 7 | 4 |
| 2019 | 4 | 5 |
| 2020 | 4 | 7 |
| 2021 | 2 | 4 |
| 2022 | 4 | 5 |
| 2023 | 7 | 7 |
| 2024 | 6 | 7 |
| 2025 | 3 | 2 |
| 2026 | 2 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Chemical additives for direct air carbon capture25 Aug 2026US 12,714,966 B2Halliburton Energy Services.Inc.
- Methods of scavenging formaldehyde from passing air25 Aug 2026US 12,716,000 B2Swimc LLC
- Removal of acid gases from gaseous mixtures containing them30 Dec 2025US 12,509,639 B2ENI S. p. A.
- Methods for absorption and desorption of carbon dioxide24 Jun 2025US 12,337,274 B2Saudi Arabian Oil Company
- Systems and methods for processing gases4 Feb 2025US 12,215,026 B2Transform Materials LLC
- Hydrogen sulphide and mercaptan scavenging additive concentrate comprising an oxazolidine compound and an alkoxylated amine24 Sep 2026US 2026/0284585 A1TotalEnergies One Tech
- Sorbents for carbon dioxide capture16 Jul 2026US 2026/0199873 A1BASF SE
- Process for regenerating a liquid absorbent14 Aug 2025US 2025/0256237 A1Commonwealth Scientific and Industrial Research Organisation
- Systems and Methods for Processing Gases16 Jan 2025US 2025/0018358 A1Transform Materials LLC
- Chemical Additives For Direct Air Carbon Capture28 Nov 2024US 2024/0390839 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Method of scavenging hydrogen sulfide and/or mercaptans using triazines25US 8,734,637 B2Baker Hughes Incorporated · 2014
- CO2 recovery system and CO2 absorption liquid21US 8,568,520 B2Kabushiki Kaisha Toshiba · 2013
- Compressed growing medium15US 8,256,160 B22012
- Target gas capture12US 8,871,008 B2Carbon Engineering Limited Partnership · 2014
- Humidity control for enclosure8US 9,302,795 B1Seagate Technology LLC · 2016