B01D 2259/414
Using different types of adsorbents
Official title: using different types of adsorbents
B01D2259/414 (Using different types of adsorbents) appears on 635 US grants and 502 published applications in this corpus.
Search patents in B01D- Granted patents
- 635
- Published applications
- 502
- Assignees
- 289
- Inventors
- 1,351
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 3 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 12 | 0 |
| 1993 | 14 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 15 | 0 |
| 1997 | 12 | 0 |
| 1998 | 17 | 0 |
| 1999 | 26 | 0 |
| 2000 | 23 | 0 |
| 2001 | 16 | 6 |
| 2002 | 25 | 23 |
| 2003 | 24 | 23 |
| 2004 | 13 | 28 |
| 2005 | 14 | 25 |
| 2006 | 15 | 32 |
| 2007 | 19 | 23 |
| 2008 | 22 | 29 |
| 2009 | 17 | 23 |
| 2010 | 25 | 31 |
| 2011 | 17 | 22 |
| 2012 | 25 | 19 |
| 2013 | 21 | 17 |
| 2014 | 17 | 13 |
| 2015 | 15 | 18 |
| 2016 | 11 | 13 |
| 2017 | 13 | 18 |
| 2018 | 22 | 21 |
| 2019 | 14 | 15 |
| 2020 | 13 | 12 |
| 2021 | 13 | 13 |
| 2022 | 13 | 23 |
| 2023 | 18 | 15 |
| 2024 | 13 | 15 |
| 2025 | 13 | 9 |
| 2026 | 12 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Adsorbent bed with increased hydrothermal stability6 Oct 2026US 12,752,233 B2BASF SE
- Adsorbent bed with increased hydrothermal stability4 Aug 2026US 12,697,578 B2BASF SE
- Pressure swing adsorption apparatus for high purity hydrogen purification from ammonia decomposition and hydrogen purification method using the same4 Aug 2026US 12,697,581 B2Korea Institute of Energy Research
- Adsorbent bed for mercaptan removal with increased hydrothermal stability28 Jul 2026US 12,691,404 B2BASF SE
- Relating to gas separation30 Jun 2026US 12,667,823 B2University of Limerick
- Method and apparatus for treating a hydrocarbon mixture6 Aug 2026US 2026/0225975 A1Linde Aktiengesellschaft
- Facility for recovering co2 contained in a feed gas flow30 Jul 2026US 2026/0216646 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Low sodium activated alumina materials16 Jul 2026US 2026/0199867 A1BASF SE
- An air or gas treatment system comprising a structured adsorbent or catalyst in the first pipe25 Jun 2026US 2026/0175159 A1Atlas Copco Airpower, Naamloze Vennootschap
- Dehumidification rotor and rotary dehumidification device11 Jun 2026US 2026/0158431 A1Contemporary Amperex Technology Co., Limited
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
- Respirator filter system167US 5,714,126 AMine Safety Appliances Company · 1998
- Removal of water and carbon dioxide from atmospheric air159US 4,711,645 AAir Products and Chemicals, Inc. · 1987
- Self-adhesive vent filter and adsorbent assembly with a diffusion tube156US 5,417,743 AW. L. Gore & Associates, Inc. · 1995