B01D 53/268
By diffusion
Official title: {by diffusion}
B01D53/268 (By diffusion) appears on 419 US grants and 461 published applications in this corpus.
Search patents in B01D- Granted patents
- 419
- Published applications
- 461
- Assignees
- 288
- Inventors
- 959
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 12 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 10 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 10 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 4 | 1 |
| 2002 | 10 | 10 |
| 2003 | 8 | 7 |
| 2004 | 11 | 6 |
| 2005 | 4 | 12 |
| 2006 | 3 | 14 |
| 2007 | 3 | 9 |
| 2008 | 11 | 14 |
| 2009 | 6 | 8 |
| 2010 | 9 | 15 |
| 2011 | 4 | 13 |
| 2012 | 14 | 14 |
| 2013 | 13 | 10 |
| 2014 | 10 | 27 |
| 2015 | 9 | 15 |
| 2016 | 18 | 17 |
| 2017 | 15 | 32 |
| 2018 | 20 | 22 |
| 2019 | 21 | 30 |
| 2020 | 23 | 39 |
| 2021 | 24 | 26 |
| 2022 | 24 | 21 |
| 2023 | 18 | 16 |
| 2024 | 15 | 23 |
| 2025 | 16 | 34 |
| 2026 | 16 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hollow fiber membrane module21 Jul 2026US 12,685,967 B2Nok Corporation
- Membrane-dehumidification technologies for electronic component protection14 Jul 2026US 12,678,732 B2Purdue Research Foundation
- Membrane separator7 Jul 2026US 12,673,296 B2Honeywell International Inc.
- Direct air capture of carbon dioxide with nanofluidic flows30 Jun 2026US 12,667,806 B1National Technology & Engineering Solutions of Sandia, LLC
- Air contactor16 Jun 2026US 12,654,132 B2Baltimore Aircoil Company, Inc.
- Direct air capture of carbon dioxide with nanofluidic flows8 Oct 2026US 2026/0307002 A1National Technology & Engineering Solutions of Sandia, LLC
- Hollow fiber membrane module8 Oct 2026US 2026/0307014 A1Nok Corporation
- Receptacle for a refillable dehumidifier24 Sep 2026US 2026/0284569 A1Gold Technic Pte. Ltd.
- Air contactor24 Sep 2026US 2026/0284592 A1
- Vacuum-enhanced membrane dehumidification and humidification10 Sep 2026US 2026/0266485 A1Dais Corporation
Most cited
By later US patents
- Ventilator compressor system having improved dehumidification apparatus178US 6,220,245 B1Mallinckrodt Inc. · 2001
- Countercurrent dehydration by hollow fibers156US 5,002,590 ABend Research, Inc. · 1991
- Continuous carbon dioxide and water removal system138US 5,281,254 AUnited Technologies Corporation · 1994
- Membrane desiccation heat pump103US 6,739,142 B22004
- Fluid drying tube100US 4,705,543 APerma Pure Products, Inc. · 1987