B01D 2259/403
Using three beds
Official title: using three beds
B01D2259/403 (Using three beds) appears on 332 US grants and 194 published applications in this corpus.
Search patents in B01D- Granted patents
- 332
- Published applications
- 194
- Assignees
- 163
- Inventors
- 689
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 8 | 0 |
| 1980 | 3 | 0 |
| 1981 | 8 | 0 |
| 1982 | 8 | 0 |
| 1983 | 10 | 0 |
| 1984 | 9 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 8 | 0 |
| 1988 | 9 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 11 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 8 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 8 | 5 |
| 2003 | 7 | 5 |
| 2004 | 1 | 7 |
| 2005 | 3 | 14 |
| 2006 | 7 | 10 |
| 2007 | 4 | 4 |
| 2008 | 11 | 5 |
| 2009 | 1 | 5 |
| 2010 | 8 | 13 |
| 2011 | 8 | 10 |
| 2012 | 6 | 6 |
| 2013 | 10 | 6 |
| 2014 | 3 | 2 |
| 2015 | 7 | 5 |
| 2016 | 5 | 5 |
| 2017 | 2 | 7 |
| 2018 | 4 | 10 |
| 2019 | 13 | 7 |
| 2020 | 7 | 9 |
| 2021 | 4 | 8 |
| 2022 | 8 | 13 |
| 2023 | 8 | 14 |
| 2024 | 9 | 11 |
| 2025 | 8 | 8 |
| 2026 | 9 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catalyst reactor15 Sep 2026US 12,734,473 B2Taiyuan University of Technology
- Process and apparatus for removing unwanted components from a gas mixture8 Sep 2026US 12,728,382 B2Linde Aktiengesellschaft
- System and method for purifying hydrogen, and system for producing hydrogen by water electrolysis11 Aug 2026US 12,702,949 B2Wuxi Longi Hydrogen Technology Co., Ltd.
- Adsorbent bed with increased hydrothermal stability4 Aug 2026US 12,697,578 B2BASF SE
- Adsorbent bed for mercaptan removal with increased hydrothermal stability28 Jul 2026US 12,691,404 B2BASF SE
- Dehydration device and assembly, and method for obtaining such an assembly27 Aug 2026US 2026/0251392 A1Lgd
- Method and apparatus for treating a hydrocarbon mixture6 Aug 2026US 2026/0225975 A1Linde Aktiengesellschaft
- Catalyst reactor9 Jul 2026US 2026/0192236 A1Taiyuan University of Technology
- Process and apparatus for removing components from a feed gas mixture29 Jan 2026US 2026/0027509 A1Linde Aktiengesellschaft
- Oxygen Concentrator Sorbent Bed Equalization and Feed Manifolds and Method of Using the Same22 Jan 2026US 2026/0021442 A1TDA Research, Inc.
Most cited
By later US patents
- Methods and apparatuses for gas separation by pressure swing adsorption with partial gas product feed to fuel cell power source139US 6,866,950 B2QuestAir Technologies Inc. · 2005
- Recovery of methane from land fill gas136US 4,770,676 AAir Products and Chemicals, Inc. · 1988
- Portable low profile DC oxygen concentrator113US 4,826,510 AThe John Bunn Company · 1989
- Compact oxygen concentrator108US 4,302,224 AGreene & Kellogg, Inc. · 1981
- Portable gas fractionalization system107US 7,066,985 B2Inogen, Inc. · 2006