B01D 2251/40
Alkaline earth metal or magnesium compounds
B01D2251/40 (Alkaline earth metal or magnesium compounds) appears on 1,104 US grants and 1,512 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,104
- Published applications
- 1,512
- Assignees
- 802
- Inventors
- 3,030
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 7 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 12 | 0 |
| 1998 | 9 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 5 |
| 2002 | 6 | 8 |
| 2003 | 7 | 4 |
| 2004 | 7 | 9 |
| 2005 | 6 | 16 |
| 2006 | 9 | 18 |
| 2007 | 7 | 7 |
| 2008 | 16 | 28 |
| 2009 | 11 | 45 |
| 2010 | 37 | 92 |
| 2011 | 33 | 95 |
| 2012 | 55 | 71 |
| 2013 | 51 | 83 |
| 2014 | 76 | 87 |
| 2015 | 71 | 80 |
| 2016 | 54 | 81 |
| 2017 | 77 | 87 |
| 2018 | 70 | 79 |
| 2019 | 66 | 79 |
| 2020 | 68 | 78 |
| 2021 | 64 | 64 |
| 2022 | 56 | 75 |
| 2023 | 47 | 70 |
| 2024 | 46 | 91 |
| 2025 | 57 | 93 |
| 2026 | 31 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Carbon dioxide processing agent and method for producing same22 Sep 2026US 12,741,272 B2Eau De Merus Co., Ltd.
- Hydrated lime for carbon capture1 Sep 2026US 12,722,136 B1Lhoist North America, Inc.
- Chemical additives for direct air carbon capture25 Aug 2026US 12,714,966 B2Halliburton Energy Services.Inc.
- Flue gas purification system for hazardous waste incineration and purification method25 Aug 2026US 12,714,969 B2Chongqing Greening Environmental Protection Co. Ltd
- Alkali enrichment mediated CO2 sequestration methods, and systems for practicing the same28 Jul 2026US 12,691,410 B1Blue Planet Systems Corporation
- Hydrated Lime for Carbon Capture1 Oct 2026US 2026/0295556 A1Lhoist North America, Inc.
- 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
- Structured powders for carbon dioxide capture17 Sep 2026US 2026/0273503 A1Anvil Capture Systems Inc.
- Method for removing pfas comprised in waste10 Sep 2026US 2026/0263857 A1Sarp Industries
- Method and apparatus for carbon dioxide sequestration3 Sep 2026US 2026/0257194 A1Anvil Capture Systems Inc.
Most cited
By later US patents
- Flue gas mercury control214US 8,080,088 B12011
- System and method for sequestration and separation of mercury in combustion exhaust gas aqueous scrubber systems182US 7,722,843 B12010
- Method for extracting and sequestering carbon dioxide172US 6,890,497 B2The United States of America as represented by the United States Department of Energy · 2005
- Self-adhesive vent filter and adsorbent assembly with a diffusion tube156US 5,417,743 AW. L. Gore & Associates, Inc. · 1995
- Flue gas control system of coal combustion boiler and operating method thereof122US 8,071,060 B2Mitsubishi Heavy Industries, Ltd. · 2011