B01D 2251/306
Of potassium
Official title: of potassium
B01D2251/306 (Of potassium) appears on 363 US grants and 589 published applications in this corpus.
Search patents in B01D- Granted patents
- 363
- Published applications
- 589
- Assignees
- 340
- Inventors
- 1,239
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 3 |
| 2009 | 1 | 10 |
| 2010 | 7 | 16 |
| 2011 | 3 | 20 |
| 2012 | 5 | 28 |
| 2013 | 13 | 28 |
| 2014 | 23 | 28 |
| 2015 | 17 | 26 |
| 2016 | 20 | 30 |
| 2017 | 20 | 30 |
| 2018 | 19 | 38 |
| 2019 | 37 | 31 |
| 2020 | 31 | 35 |
| 2021 | 26 | 30 |
| 2022 | 26 | 38 |
| 2023 | 28 | 50 |
| 2024 | 28 | 51 |
| 2025 | 28 | 64 |
| 2026 | 19 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Chemical additives for direct air carbon capture25 Aug 2026US 12,714,966 B2Halliburton Energy Services.Inc.
- Air contactor16 Jun 2026US 12,654,132 B2Baltimore Aircoil Company, Inc.
- Catalyst for decomposing perfluorinated compounds and method of manufacturing the catalyst16 Jun 2026US 12,654,155 B2Korea Advanced Institute of Science and Technology
- Propane gas removal material12 May 2026US 12,623,186 B2Robert Bosch GmbH
- Fully automated direct air capture carbon dioxide processing system5 May 2026US 12,616,934 B2AirMyne, Inc.
- Air contactor24 Sep 2026US 2026/0284592 A1
- An integrated resource recovery and co-treatment system of desalination brine and flue gas via waste brine electrolysis and sustainable co2 mineralisation (from brine to newseawater)17 Sep 2026US 2026/0273466 A1Nanyang Technological University
- Direct air capture of carbon dioxide17 Sep 2026US 2026/0273467 A1Carbon Utility LLC
- Hydrophilic nanofiltration/ultrafiltration membrane as a co2 absorber for air capture10 Sep 2026US 2026/0264017 A1University of Kentucky Research Foundation
- Integrated process for removing carbon dioxide from a ship or offshore floating vessel using a rotating packed device20 Aug 2026US 2026/0243184 A1Chevron U.S.A.Inc.
Most cited
By later US patents
- Flue gas mercury control214US 8,080,088 B12011
- Bulk gas sorption and apparatus, gas containment/treatment system comprising same, and sorbent composition therefor81US 5,151,395 ANovapure Corporation · 1992
- Method and apparatus for removing mercury species from hot flue gas81US 6,960,329 B2Foster Wheeler Energy Corporation · 2005
- Pushable multi-fiber connector81US 9,383,539 B2Clearfield, Inc. · 2016
- Energy efficient gas separation for fuel cells74US 7,087,331 B2QuestAir Technologies Inc. · 2006