B01D 53/227
In parallel connexion
Official title: {in parallel connexion}
B01D53/227 (In parallel connexion) appears on 92 US grants and 119 published applications in this corpus.
Search patents in B01D- Granted patents
- 92
- Published applications
- 119
- Assignees
- 87
- Inventors
- 282
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 2 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 2 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 3 |
| 2013 | 3 | 5 |
| 2014 | 2 | 6 |
| 2015 | 4 | 1 |
| 2016 | 6 | 8 |
| 2017 | 5 | 9 |
| 2018 | 5 | 2 |
| 2019 | 4 | 4 |
| 2020 | 2 | 11 |
| 2021 | 6 | 13 |
| 2022 | 11 | 8 |
| 2023 | 9 | 10 |
| 2024 | 6 | 11 |
| 2025 | 10 | 8 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas separation system and method for producing methane-enriched gas15 Sep 2026US 12,734,474 B2Ube Corporation
- System and method for separating a gas mixture25 Aug 2026US 12,714,968 B2Haffmans B.V.
- 4-stage membrane process with sweep for biogas upgrading16 Jun 2026US 12,654,126 B2
- Hydrogen separation from natural gas17 Feb 2026US 12,551,844 B2Air Products and Chemicals, Inc.
- Purification of methane containing gas streams using selective membrane separation6 Jan 2026US 12,515,167 B2Iogen Corporation
- Gas separation membrane unit, gas separation system, and method for producing enriched gas14 May 2026US 2026/0131280 A1Ube Corporation
- Separation Device And Method For Designing Separation Device26 Mar 2026US 2026/0084100 A1Seiko Epson Corporation
- Rng gas processing skid and arrangements including same19 Mar 2026US 2026/0077298 A1Montauk Energy Holdings, LLC
- Water precipitating devices, methods and systems22 Jan 2026US 2026/0021446 A1Beair Water and Air Technologies Ltd.
- Gas separation system and method for producing methane-enriched gas8 Jan 2026US 2026/0008003 A1Ube Corporation
Most cited
By later US patents
- Gas separation device92US 6,635,104 B2McMaster University · 2003
- Process for separation of gases47US 8,999,038 B2Evonik Fibres GmbH · 2015
- Oxygen production by staged mixed conductor membranes42US 5,447,555 AAir Products and Chemicals, Inc. · 1995
- Air separation system and method with modulated warning flow42US 7,374,601 B2Parker-Hannifin Corporation · 2008
- Separation of water from hydrocarbons and halogenated hydrocarbons39US 4,857,081 ASeparation Dynamics, Inc. · 1989