B01D 2251/404
Of calcium
Official title: of calcium
B01D2251/404 (Of calcium) appears on 903 US grants and 1,265 published applications in this corpus.
Search patents in B01D- Granted patents
- 903
- Published applications
- 1,265
- Assignees
- 681
- Inventors
- 2,483
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 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 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 7 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 10 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 3 |
| 2002 | 3 | 5 |
| 2003 | 3 | 4 |
| 2004 | 4 | 5 |
| 2005 | 4 | 5 |
| 2006 | 5 | 8 |
| 2007 | 2 | 6 |
| 2008 | 5 | 18 |
| 2009 | 10 | 38 |
| 2010 | 27 | 77 |
| 2011 | 30 | 79 |
| 2012 | 43 | 66 |
| 2013 | 46 | 68 |
| 2014 | 64 | 75 |
| 2015 | 63 | 63 |
| 2016 | 46 | 72 |
| 2017 | 64 | 77 |
| 2018 | 63 | 69 |
| 2019 | 55 | 69 |
| 2020 | 61 | 69 |
| 2021 | 59 | 53 |
| 2022 | 43 | 61 |
| 2023 | 41 | 56 |
| 2024 | 34 | 71 |
| 2025 | 49 | 86 |
| 2026 | 22 | 62 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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