B01D 2253/311
Porosity
Official title: Porosity, e.g. pore volume
B01D2253/311 (Porosity) appears on 361 US grants and 444 published applications in this corpus.
Search patents in B01D- Granted patents
- 361
- Published applications
- 444
- Assignees
- 258
- Inventors
- 993
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 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 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 5 |
| 2002 | 8 | 5 |
| 2003 | 6 | 6 |
| 2004 | 5 | 5 |
| 2005 | 0 | 7 |
| 2006 | 4 | 6 |
| 2007 | 2 | 4 |
| 2008 | 3 | 19 |
| 2009 | 7 | 10 |
| 2010 | 10 | 16 |
| 2011 | 10 | 13 |
| 2012 | 12 | 25 |
| 2013 | 13 | 13 |
| 2014 | 17 | 15 |
| 2015 | 16 | 20 |
| 2016 | 19 | 16 |
| 2017 | 17 | 30 |
| 2018 | 11 | 28 |
| 2019 | 30 | 21 |
| 2020 | 26 | 32 |
| 2021 | 19 | 29 |
| 2022 | 19 | 25 |
| 2023 | 18 | 29 |
| 2024 | 17 | 20 |
| 2025 | 23 | 26 |
| 2026 | 11 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Adsorbent material, adsorption system, and adsorption process for hydrogen recovery8 Sep 2026US 12,729,116 B2Air Products and Chemicals, Inc.
- Hydrated lime for carbon capture1 Sep 2026US 12,722,136 B1Lhoist North America, Inc.
- Composite for electrochemical gas separation28 Jul 2026US 12,691,409 B2Verdox, Inc.
- Azo-linked organic polymers for carbon dioxide capture and metal ion removal14 Jul 2026US 12,678,769 B2King Fahd University of Petroleum and Minerals
- Structured powders for carbon dioxide capture30 Jun 2026US 12,667,822 B2Anvil Capture Systems Inc.
- Structured powders for carbon dioxide capture17 Sep 2026US 2026/0273503 A1Anvil Capture Systems Inc.
- Adsorbent Material, Adsorption System, and Adsorption Process For Hydrogen Recovery17 Sep 2026US 2026/0274664 A1Air Products and Chemicals, Inc.
- Method and apparatus for carbon dioxide sequestration3 Sep 2026US 2026/0257194 A1Anvil Capture Systems Inc.
- Adsorbent and systems for direct air capture27 Aug 2026US 2026/0249228 A1
- Porous material for hydrogen purification and method for producing same, and hydrogen purification apparatus20 Aug 2026US 2026/0241366 A1Osaka Gas Chemicals Co., Ltd.
Most cited
By later US patents
- Air induction filter assembly92US 6,464,761 B1Visteon Global Technologies, Inc. · 2002
- Removal of a target gas from a mixture of gases by swing adsorption with use of a turboexpander87US 8,529,664 B2ExxonMobil Research and Engineering Company · 2013
- Temperature swing adsorption of CO2 from flue gas using a parallel channel contractor82US 7,947,120 B2ExxonMobil Research and Engineering Company · 2011
- Scrubbing of contaminants from contaminated air streams with aerogel materials with optional photocatalytic destruction77US 6,080,281 A2000
- Process for removing a target gas from a mixture of gases by thermal swing adsorption74US 7,938,886 B2ExxonMobil Research and Engineering Company · 2011