B03C 3/01
Pretreatment of the gases prior to electrostatic precipitation
B03C3/01 (Pretreatment of the gases prior to electrostatic precipitation) appears on 375 US grants and 339 published applications in this corpus.
Search patents in B03C- Granted patents
- 375
- Published applications
- 339
- Assignees
- 270
- Inventors
- 858
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 13 | 0 |
| 1998 | 8 | 0 |
| 1999 | 11 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 3 |
| 2003 | 6 | 10 |
| 2004 | 5 | 10 |
| 2005 | 9 | 6 |
| 2006 | 7 | 18 |
| 2007 | 10 | 5 |
| 2008 | 5 | 8 |
| 2009 | 6 | 10 |
| 2010 | 5 | 8 |
| 2011 | 5 | 13 |
| 2012 | 5 | 12 |
| 2013 | 8 | 10 |
| 2014 | 9 | 13 |
| 2015 | 9 | 7 |
| 2016 | 9 | 12 |
| 2017 | 11 | 8 |
| 2018 | 11 | 16 |
| 2019 | 10 | 18 |
| 2020 | 8 | 19 |
| 2021 | 10 | 31 |
| 2022 | 13 | 33 |
| 2023 | 13 | 31 |
| 2024 | 18 | 21 |
| 2025 | 16 | 10 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrostatic precipitator and control method thereof8 Sep 2026US 12,728,424 B2Samsung Electronics Co., Ltd.
- Electrostatic precipitator with rotary collecting walls2 Jun 2026US 12,643,112 B2Nestec S. A.
- Particulate collecting device17 Mar 2026US 12,576,409 B2The Tyre Collective Ltd
- Methods and equipment for treatment of odorous gas streams13 Jan 2026US 12,521,675 B2
- Air conditioner23 Dec 2025US 12,504,179 B2LG Electronis Inc.
- Hybrid filter unit8 Oct 2026US 2026/0307082 A1Brairtech Sweden AB
- Air conditioner17 Sep 2026US 2026/0276225 A1Samsung Electronics Co., Ltd.
- Indoor field intelligent cleaning system25 Jun 2026US 2026/0177263 A1Microjet Technology Co., Ltd.
- Air purification system28 May 2026US 2026/0145110 A1Dyson Technology Limited
- Electronically enhanced air cleaner with multiple filters and energy grids12 Mar 2026US 2026/0070067 A1Healthway Home Products Company Inc.
Most cited
By later US patents
- Method for removing pollutants from a combustor flue gas and system for same199US 5,505,766 AElectric Power Research, Inc. · 1996
- Sorbents and methods for the removal of mercury from combustion gases199US 6,953,494 B22005
- Method for removing mercury from a gas stream and apparatus for same139US 5,827,352 AElectric Power Research Institute, Inc. · 1998
- Air-treatment apparatus and methods101US 6,955,708 B1Shaklee Corporation · 2005
- Compact air purifier unit88US 4,597,781 A1986