B01D 2253/25
Coated, impregnated or composite adsorbents
B01D2253/25 (Coated, impregnated or composite adsorbents) appears on 1,138 US grants and 1,355 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,138
- Published applications
- 1,355
- Assignees
- 709
- Inventors
- 3,196
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 2 | 0 |
| 1983 | 9 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 6 | 0 |
| 1990 | 15 | 0 |
| 1991 | 3 | 0 |
| 1992 | 13 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 11 | 0 |
| 1997 | 15 | 0 |
| 1998 | 35 | 0 |
| 1999 | 27 | 0 |
| 2000 | 21 | 0 |
| 2001 | 21 | 11 |
| 2002 | 25 | 32 |
| 2003 | 33 | 25 |
| 2004 | 28 | 36 |
| 2005 | 15 | 38 |
| 2006 | 21 | 28 |
| 2007 | 22 | 13 |
| 2008 | 16 | 10 |
| 2009 | 11 | 12 |
| 2010 | 7 | 9 |
| 2011 | 7 | 25 |
| 2012 | 17 | 43 |
| 2013 | 29 | 49 |
| 2014 | 35 | 69 |
| 2015 | 43 | 47 |
| 2016 | 43 | 73 |
| 2017 | 51 | 74 |
| 2018 | 52 | 87 |
| 2019 | 62 | 91 |
| 2020 | 52 | 67 |
| 2021 | 56 | 92 |
| 2022 | 48 | 67 |
| 2023 | 68 | 101 |
| 2024 | 54 | 85 |
| 2025 | 59 | 99 |
| 2026 | 33 | 72 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process of forming a gas adsorbant macroporous material15 Sep 2026US 12,734,503 B2Spiritus Technologies, Pbc
- Surface molecularly imprinted magnetic nanometer material of salvianolic acid A, preparation method therefor and use thereof1 Sep 2026US 12,722,142 B2Zhejiang Chinese Medical University
- Polymeric sorbent fiber compositions incorporating metal organic frameworks25 Aug 2026US 12,714,983 B2ExxonMobil Technology and Engineering Company
- Adsorbent material, adsorption system, and adsorption process25 Aug 2026US 12,714,985 B2Air Products and Chemicals, Inc.
- Multi-stage direct capture of CO2 from air11 Aug 2026US 12,702,947 B2ExxonMobil Technology and Engineering Company
- Constant gas-phase organic compound concentration generation apparatus and pretreatment method thereof1 Oct 2026US 2026/0295499 A1Shenzhen University
- Gas adsorption sheet for secondary battery with cover film24 Sep 2026US 2026/0284568 A1Nitto Denko Corporation
- Carbon-carbon composite sorbent formulations for carbon dioxide adsorption, and related methods24 Sep 2026US 2026/0284634 A1Schlumberger Technology Corporation
- Supported poly(allyl)amine and derivatives for co2 capture from flue gas or ultra-dilute gas streams such as ambient air or admixtures thereof24 Sep 2026US 2026/0284637 A1Georgia Tech Research Corporation
- Structured powders for carbon dioxide capture17 Sep 2026US 2026/0273503 A1Anvil Capture Systems Inc.
Most cited
By later US patents
- High frequency pressure swing adsorption186US 6,176,897 B1Questor Industries Inc. · 2001
- Rotary pressure swing adsorption apparatus181US 6,406,523 B1QuestAir Technologies Inc. · 2002
- Self-adhesive vent filter and adsorbent assembly with a diffusion tube156US 5,417,743 AW. L. Gore & Associates, Inc. · 1995
- Portable oxygen concentrator151US 6,520,176 B1L 'Air Liquide-Societe 'Anonyme a 'Directoire et Conseil de Surveillance pour l 'Etude et L'Exploitation des Procedes Georges Claude · 2003
- Selective adsorption process139US 3,986,849 AUnion Carbide Corporation · 1976