B01D 2259/40058
Number of sequence steps, including sub-steps, per cycle
B01D2259/40058 (Number of sequence steps, including sub-steps, per cycle) appears on 544 US grants and 258 published applications in this corpus.
Search patents in B01D- Granted patents
- 544
- Published applications
- 258
- Assignees
- 165
- Inventors
- 826
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 9 | 0 |
| 1982 | 8 | 0 |
| 1983 | 11 | 0 |
| 1984 | 14 | 0 |
| 1985 | 13 | 0 |
| 1986 | 6 | 0 |
| 1987 | 16 | 0 |
| 1988 | 18 | 0 |
| 1989 | 12 | 0 |
| 1990 | 14 | 0 |
| 1991 | 13 | 0 |
| 1992 | 21 | 0 |
| 1993 | 18 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 15 | 0 |
| 1997 | 7 | 0 |
| 1998 | 13 | 0 |
| 1999 | 18 | 0 |
| 2000 | 23 | 0 |
| 2001 | 16 | 2 |
| 2002 | 19 | 15 |
| 2003 | 19 | 17 |
| 2004 | 15 | 9 |
| 2005 | 5 | 19 |
| 2006 | 5 | 18 |
| 2007 | 9 | 16 |
| 2008 | 18 | 14 |
| 2009 | 10 | 11 |
| 2010 | 19 | 13 |
| 2011 | 11 | 12 |
| 2012 | 8 | 13 |
| 2013 | 18 | 8 |
| 2014 | 7 | 6 |
| 2015 | 7 | 8 |
| 2016 | 5 | 5 |
| 2017 | 8 | 8 |
| 2018 | 7 | 7 |
| 2019 | 6 | 9 |
| 2020 | 9 | 11 |
| 2021 | 9 | 7 |
| 2022 | 4 | 5 |
| 2023 | 10 | 9 |
| 2024 | 2 | 11 |
| 2025 | 5 | 5 |
| 2026 | 6 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2259/40064FiveIndexing code130
- B01D 2259/40062FourIndexing code121
- B01D 2259/40066SixIndexing code113
- B01D 2259/40075More than tenIndexing code102
- B01D 2259/40067SevenIndexing code94
- B01D 2259/40069EightIndexing code86
- B01D 2259/4006Less than fourIndexing code77
- B01D 2259/40071NineIndexing code61
All 9 subgroupsShow fewer
Recent patents
- 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
- Direct capture of CO2 from air and point sources14 Jul 2026US 12,678,727 B2ExxonMobil Technology and Engineering Company
- Processes and apparatuses for reducing molecular weight fluctuation in a tail gas stream from a pressure swing adsorption process26 May 2026US 12,636,607 B2Uop LLC
- Method and system for upgrading biogas using PSA21 Apr 2026US 12,605,672 B2Iogen Corporation
- Gas treatment process and process arrangement10 Mar 2026US 12,569,799 B2Linde Aktiengesellschaft
- Impurity removal system for use in a fuel cell system30 Oct 2025US 2025/0336996 A1Hydrogenics Corporation
- Processes and apparatuses for reducing molecular weight fluctuation in a tail gas stream from a pressure swing adsorption process19 Jun 2025US 2025/0196053 A1Uop LLC
- Method and system for upgrading biogas using psa24 Apr 2025US 2025/0128201 A1Iogen Corporation
- Method and system for upgrading biogas using psa2 Jan 2025US 2025/0001351 A1Iogen Corporation
- Pressure swing adsorption apparatus for high purity hydrogen purification from ammonia decomposition and hydrogen purification method using the same2 Jan 2025US 2025/0001352 A1Korea Institute of Energy Research
Most cited
By later US patents
- Rapid cycle pressure swing adsorption oxygen concentration method and apparatus193US 5,827,358 AImpact MST, Incorporation · 1998
- High frequency pressure swing adsorption186US 6,176,897 B1Questor Industries Inc. · 2001
- Removal of water and carbon dioxide from atmospheric air159US 4,711,645 AAir Products and Chemicals, Inc. · 1987
- Process for purifying a gas by adsorption of the impurities on several active carbons147US 6,402,813 B2L 'Air Liquide-Societe 'Anonyme a 'Directoire et Conseil de Surveillance pour l 'Etude et L'Exploitation des Procedes Georges Claude · 2002
- Selective adsorption process139US 3,986,849 AUnion Carbide Corporation · 1976