B03C 3/38
Particle charging or ionising stations
Official title: Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames
B03C3/38 (Particle charging or ionising stations) appears on 422 US grants and 419 published applications in this corpus.
Search patents in B03C- Granted patents
- 422
- Published applications
- 419
- Assignees
- 283
- Inventors
- 921
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 11 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 10 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 0 |
| 2002 | 6 | 6 |
| 2003 | 6 | 6 |
| 2004 | 4 | 9 |
| 2005 | 6 | 15 |
| 2006 | 6 | 19 |
| 2007 | 10 | 4 |
| 2008 | 11 | 10 |
| 2009 | 5 | 9 |
| 2010 | 9 | 20 |
| 2011 | 8 | 20 |
| 2012 | 8 | 22 |
| 2013 | 18 | 11 |
| 2014 | 17 | 16 |
| 2015 | 16 | 16 |
| 2016 | 9 | 8 |
| 2017 | 9 | 21 |
| 2018 | 8 | 12 |
| 2019 | 16 | 17 |
| 2020 | 9 | 17 |
| 2021 | 16 | 37 |
| 2022 | 18 | 52 |
| 2023 | 11 | 29 |
| 2024 | 26 | 25 |
| 2025 | 26 | 15 |
| 2026 | 13 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Particle collection vessel, particle collection device and particle collection method6 Oct 2026US 12,752,284 B2Amano Corporation
- Inverter apparatus provided with dust collecting unit6 Oct 2026US 12,752,285 B2Ls Electric Co., Ltd.
- Air conditioning apparatus15 Sep 2026US 12,734,472 B2LG Electronics Inc.
- Electrostatic precipitator and control method thereof8 Sep 2026US 12,728,424 B2Samsung Electronics Co., Ltd.
- Ion generator and system with mobile HVAC1 Sep 2026US 12,722,161 B2Dometic Sweden AB
- Electric dust-collecting filter23 Jul 2026US 2026/0208208 A1Hanon Systems
- High-voltage electrostatic type air purification module and ionic wind air purifier18 Jun 2026US 2026/0166565 A1Guangdong Tongyuan Electric Appliance Co., Ltd
- Aerosol ionization device and air purifier employing same2 Apr 2026US 2026/0091396 A1Samsung Electronics Co., Ltd.
- Electrostatic charging device and assembly method thereof11 Dec 2025US 2025/0375773 A1AirQuality Technology (Shanghai) Co., Ltd.
- Electrification part27 Nov 2025US 2025/0360517 A1Hanon Systems
Most cited
By later US patents
- Electrokinetic transducing methods and apparatus and systems comprising or utilizing the same130US 4,789,801 AZenion Industries, Inc. · 1988
- Apparatus and method for neutralizing static electric charges in sensitive manufacturing areas119US 4,477,263 A1984
- Portable personal corona discharge device for destruction of airborne microbes and chemical toxins111US 5,667,564 AWein Products, Inc. · 1997
- Apparatus for measuring impurity concentrations in a liquid95US 5,098,657 ATSI Incorporated · 1992
- Two-stage electrostatic filter95US 5,993,521 ATL-Vent AB · 1999