B01D 2259/00
Type of treatment
B01D2259/00 (Type of treatment) appears on 7,455 US grants and 8,141 published applications in this corpus.
Search patents in B01D- Granted patents
- 7,455
- Published applications
- 8,141
- Assignees
- 3,402
- Inventors
- 16,229
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 38 | 0 |
| 1978 | 22 | 0 |
| 1979 | 23 | 0 |
| 1980 | 28 | 0 |
| 1981 | 43 | 0 |
| 1982 | 40 | 0 |
| 1983 | 41 | 0 |
| 1984 | 43 | 0 |
| 1985 | 59 | 0 |
| 1986 | 42 | 0 |
| 1987 | 44 | 0 |
| 1988 | 73 | 0 |
| 1989 | 59 | 0 |
| 1990 | 60 | 0 |
| 1991 | 45 | 0 |
| 1992 | 68 | 0 |
| 1993 | 72 | 0 |
| 1994 | 59 | 0 |
| 1995 | 68 | 0 |
| 1996 | 87 | 0 |
| 1997 | 90 | 0 |
| 1998 | 135 | 0 |
| 1999 | 153 | 0 |
| 2000 | 130 | 0 |
| 2001 | 132 | 48 |
| 2002 | 158 | 129 |
| 2003 | 167 | 176 |
| 2004 | 125 | 176 |
| 2005 | 103 | 190 |
| 2006 | 100 | 201 |
| 2007 | 116 | 184 |
| 2008 | 126 | 206 |
| 2009 | 107 | 231 |
| 2010 | 197 | 266 |
| 2011 | 138 | 259 |
| 2012 | 187 | 300 |
| 2013 | 244 | 294 |
| 2014 | 241 | 279 |
| 2015 | 286 | 350 |
| 2016 | 261 | 379 |
| 2017 | 289 | 381 |
| 2018 | 311 | 407 |
| 2019 | 342 | 425 |
| 2020 | 357 | 439 |
| 2021 | 317 | 498 |
| 2022 | 365 | 468 |
| 2023 | 366 | 534 |
| 2024 | 328 | 454 |
| 2025 | 315 | 475 |
| 2026 | 225 | 392 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2259/40Further details for adsorption processes and devicesIndexing code4,243
- B01D 2259/45Gas separation or purification devices adapted for specific applicationsIndexing code3,029
- B01D 2259/80Employing electric, magnetic, electromagnetic or wave energy, or particle radiationIndexing code1,082
- B01D 2259/65Employing advanced heat integrationIndexing code267
- B01D 2259/12Methods and means for introducing reactantsIndexing code242
- B01D 2259/10Gas phaseIndexing code24
Recent patents
- Filter unit with a filter block, a damping layer and a housing, and process of manufacturing such a filter unit6 Oct 2026US 12,752,136 B2Dräger Safety AG & Co. KGaA
- Photocatalytic air conditioning filter module with antiviral performance6 Oct 2026US 12,752,226 B2Korea Institute of Civil Engineering and Building Technology
- Adsorbent bed with increased hydrothermal stability6 Oct 2026US 12,752,233 B2BASF SE
- System and method for direct air capture of water and CO26 Oct 2026US 12,752,234 B2Battelle Memorial Institute
- High throughput moving panel direct air capture system6 Oct 2026US 12,752,238 B2Zero Carbon Systems, Inc.
- Filter system for the removal of volatile organosulfur compounds (voscs) from indoor air8 Oct 2026US 2026/0306980 A1Air Tech Group, SLU
- Systems and methods for optimizing carbon dioxide capture using water vapor adsorption8 Oct 2026US 2026/0306991 A1GE Vernova Infrastructure Technology LLC
- Method for treating a fluid, fluid discharge device for a fluid and associated system8 Oct 2026US 2026/0306992 A1
- Processes for sorbent regeneration8 Oct 2026US 2026/0306995 A1Shell USA, Inc.
- Gas separation method, method for producing purified gas, and gas separation apparatus8 Oct 2026US 2026/0306996 A1Asahi Kasei Kabushiki Kaisha
Most cited
By later US patents
- Gas purification system and method484US 6,514,313 B1Aeronex, Inc. · 2003
- Abatement of effluents from chemical vapor deposition processes using organometallic source reagents392US 6,749,671 B2Advanced Technology Materials, Inc. · 2004
- Apparatus for decomposition of chemical compounds385US 5,720,927 AMotorola, Inc. · 1998
- Portable oxygen concentration system and method of using the same310US 6,651,658 B1SeQual Technologies, Inc. · 2003
- Smoke plume evacuation filtration system295US 6,585,791 B12003