B01D 53/75
Multi-step processes
B01D53/75 (Multi-step processes) appears on 730 US grants and 962 published applications in this corpus.
Search patents in B01D- Granted patents
- 730
- Published applications
- 962
- Assignees
- 540
- Inventors
- 2,282
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 3 |
| 2002 | 6 | 7 |
| 2003 | 5 | 11 |
| 2004 | 2 | 13 |
| 2005 | 5 | 8 |
| 2006 | 3 | 8 |
| 2007 | 4 | 14 |
| 2008 | 9 | 23 |
| 2009 | 10 | 21 |
| 2010 | 28 | 33 |
| 2011 | 21 | 48 |
| 2012 | 30 | 50 |
| 2013 | 45 | 43 |
| 2014 | 32 | 47 |
| 2015 | 34 | 62 |
| 2016 | 28 | 31 |
| 2017 | 39 | 47 |
| 2018 | 49 | 44 |
| 2019 | 40 | 46 |
| 2020 | 41 | 53 |
| 2021 | 50 | 58 |
| 2022 | 43 | 50 |
| 2023 | 40 | 67 |
| 2024 | 32 | 63 |
| 2025 | 40 | 60 |
| 2026 | 34 | 52 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Exhaust system and exhaust method using buffer29 Sep 2026US 12,746,501 B2Samsung Electronics Co., Ltd.
- Method for extracting carbon dioxide from flue gas22 Sep 2026US 12,741,247 B2Nan Ya Plastics Corporation
- Flue gas purification system for hazardous waste incineration and purification method25 Aug 2026US 12,714,969 B2Chongqing Greening Environmental Protection Co. Ltd
- Steel mill offgas separation and purification18 Aug 2026US 12,708,874 B2Air Products and Chemicals, Inc.
- Multi-stage ammonia-based decarbonization11 Aug 2026US 12,703,638 B2Jiangnan Environmental Protection Group Inc.
- Co2 capture and hydrogen recovery from fuel cell anode off gas8 Oct 2026US 2026/0312104 A1Uop LLC
- High-efficiency carbonation reaction system and method for capturing carbon dioxide from flue gas continuously1 Oct 2026US 2026/0295508 A1National Atomic Research Institute
- Combination carbon monoxide and nitrogen dioxide scrubber treatment and process17 Sep 2026US 2026/0273461 A1
- Reduction of nox emissions from semiconductor process tools17 Sep 2026US 2026/0273463 A1Taiwan Semiconductor Manufacturing Company.Ltd
- An integrated resource recovery and co-treatment system of desalination brine and flue gas via waste brine electrolysis and sustainable co2 mineralisation (from brine to newseawater)17 Sep 2026US 2026/0273466 A1Nanyang Technological University
Most cited
By later US patents
- Apparatus for treating indoor air135US 5,221,520 ANorth Carolina Center for Scientific Research, Inc. · 1993
- Flue gas control system of coal combustion boiler and operating method thereof122US 8,071,060 B2Mitsubishi Heavy Industries, Ltd. · 2011
- Apparatus for treating indoor air106US 5,186,903 ANorth Carolina Center for Scientific Research, Inc. · 1993
- Electrical power generation apparatus104US 8,196,387 B2Praxair Technology, Inc. · 2012
- Landfill gas treatment system89US 5,451,249 AInternational Fuel Cells Corporation · 1995