B01D 3/343
The substance being a gas
Official title: {the substance being a gas}
B01D3/343 (The substance being a gas) appears on 482 US grants and 449 published applications in this corpus.
Search patents in B01D- Granted patents
- 482
- Published applications
- 449
- Assignees
- 346
- Inventors
- 1,072
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 11 | 0 |
| 1993 | 9 | 0 |
| 1994 | 9 | 0 |
| 1995 | 3 | 0 |
| 1996 | 11 | 0 |
| 1997 | 11 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 11 | 0 |
| 2001 | 6 | 1 |
| 2002 | 8 | 6 |
| 2003 | 4 | 4 |
| 2004 | 5 | 15 |
| 2005 | 6 | 12 |
| 2006 | 2 | 12 |
| 2007 | 5 | 3 |
| 2008 | 11 | 10 |
| 2009 | 10 | 10 |
| 2010 | 6 | 14 |
| 2011 | 7 | 14 |
| 2012 | 5 | 8 |
| 2013 | 10 | 6 |
| 2014 | 6 | 5 |
| 2015 | 10 | 9 |
| 2016 | 6 | 26 |
| 2017 | 15 | 25 |
| 2018 | 21 | 32 |
| 2019 | 28 | 51 |
| 2020 | 36 | 34 |
| 2021 | 26 | 31 |
| 2022 | 19 | 29 |
| 2023 | 17 | 28 |
| 2024 | 23 | 34 |
| 2025 | 22 | 19 |
| 2026 | 14 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for the separation of a product mixture7 Jul 2026US 12,673,273 B2Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Process for the recovery of low-boiling point components from an ethanol stream7 Jul 2026US 12,674,183 B2Braskem S/A
- Chemical distillation system with in situ analytics16 Jun 2026US 12,654,113 B2Astrotech Technologies, Inc.
- Method and apparatus for purifying ultra-high purity hydrogen fluoride19 May 2026US 12,630,422 B2Ram Technology Co., Ltd.
- Method for preparing sulfonated arylphosphine19 May 2026US 12,630,572 B2Hanwha Solutions Corporation
- Solvent vapors absorption system reducing contaminations8 Oct 2026US 2026/0308476 A1Desmet Belgium
- Process for the recovery of low-boiling point components from an ethanol stream1 Oct 2026US 2026/0297630 A1Braskem S/A
- Process for the recovery of low-boiling point components from an ethanol stream1 Oct 2026US 2026/0297631 A1Braskem S/A
- Process for fractionating a stream10 Sep 2026US 2026/0263962 A1Uop LLC
- Evaporative cooling pad for an air treatment unit30 Jul 2026US 2026/0218923 A1Munters Europe Aktiebolag
Most cited
By later US patents
- Window insulator115US 4,535,828 A1985
- Process for the separation of mixtures of substances103US 3,969,196 AStudiengesellschaft Kohle mbH · 1976
- Apparatus for separating organic liquid solutes from their solvent mixtures103US 4,375,387 ACritical Fluid Systems, Inc. · 1983
- Thermal gradient humidification-dehumidification desalination system87US 4,363,703 AInstitute of Gas Technology · 1982
- Process for separating organic liquid solutes from their solvent mixtures77US 4,349,415 ACritical Fluid Systems, Inc. · 1982