B01D 2259/4146
Contiguous multilayered adsorbents
B01D2259/4146 (Contiguous multilayered adsorbents) appears on 288 US grants and 186 published applications in this corpus.
Search patents in B01D- Granted patents
- 288
- Published applications
- 186
- Assignees
- 134
- Inventors
- 593
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 9 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 11 | 0 |
| 1999 | 12 | 0 |
| 2000 | 18 | 0 |
| 2001 | 14 | 3 |
| 2002 | 15 | 8 |
| 2003 | 13 | 10 |
| 2004 | 6 | 10 |
| 2005 | 4 | 17 |
| 2006 | 5 | 15 |
| 2007 | 13 | 13 |
| 2008 | 14 | 11 |
| 2009 | 8 | 8 |
| 2010 | 8 | 11 |
| 2011 | 6 | 8 |
| 2012 | 12 | 2 |
| 2013 | 2 | 3 |
| 2014 | 6 | 1 |
| 2015 | 1 | 6 |
| 2016 | 6 | 6 |
| 2017 | 5 | 3 |
| 2018 | 3 | 5 |
| 2019 | 4 | 6 |
| 2020 | 2 | 5 |
| 2021 | 6 | 3 |
| 2022 | 3 | 9 |
| 2023 | 5 | 4 |
| 2024 | 4 | 7 |
| 2025 | 8 | 4 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Adsorbent bed with increased hydrothermal stability6 Oct 2026US 12,752,233 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
- Adsorber, purification system, and purification method7 Apr 2026US 12,595,960 B2Air Products and Chemicals, Inc.
- Hydrogen purification by adsorption10 Mar 2026US 12,570,528 B2Air Products and Chemicals, Inc.
- Structure with external support for particle adsorbent bed for adsorption gas separation process24 Feb 2026US 12,558,647 B2W. L. Gore & Associates, Inc.
- Method and apparatus for treating a hydrocarbon mixture6 Aug 2026US 2026/0225975 A1Linde Aktiengesellschaft
- Low sodium activated alumina materials16 Jul 2026US 2026/0199867 A1BASF SE
- Dehumidification rotor and rotary dehumidification device11 Jun 2026US 2026/0158431 A1Contemporary Amperex Technology Co., Limited
- Rotary dehumidification device21 May 2026US 2026/0139851 A1Contemporary Amperex Technology Co., Limited
- Surgical smoke treatment system for polar and nonpolar gases14 May 2026US 2026/0132944 A1
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