B03C 3/12
Characterised by separation of ionising and collecting stations
Official title: characterised by separation of ionising and collecting stations
B03C3/12 (Characterised by separation of ionising and collecting stations) appears on 414 US grants and 519 published applications in this corpus.
Search patents in B03C- Granted patents
- 414
- Published applications
- 519
- Assignees
- 275
- Inventors
- 907
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 4 |
| 2002 | 6 | 13 |
| 2003 | 6 | 14 |
| 2004 | 7 | 19 |
| 2005 | 13 | 12 |
| 2006 | 8 | 10 |
| 2007 | 9 | 8 |
| 2008 | 10 | 15 |
| 2009 | 12 | 16 |
| 2010 | 12 | 20 |
| 2011 | 11 | 20 |
| 2012 | 8 | 10 |
| 2013 | 16 | 21 |
| 2014 | 12 | 10 |
| 2015 | 12 | 22 |
| 2016 | 12 | 16 |
| 2017 | 13 | 21 |
| 2018 | 15 | 32 |
| 2019 | 22 | 24 |
| 2020 | 19 | 32 |
| 2021 | 19 | 28 |
| 2022 | 18 | 48 |
| 2023 | 18 | 29 |
| 2024 | 22 | 28 |
| 2025 | 25 | 39 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Electrostatic filter module for air cleaner, and air cleaner9 Jun 2026US 12,649,158 B2BSH Hausgeräte GmbH
- 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
- Electrostatic air purifier18 Jun 2026US 2026/0166566 A1Suzhou Beiang Smark Technology Co., Ltd.
- Electrostatically Charged Drift Eliminators to Remove Liquid Droplets From An Air Flow21 May 2026US 2026/0139907 A1
- Catalyst treatment apparatus using plasma and exhaust gas treatment system using the same30 Apr 2026US 2026/0115661 A1Ennopia
Most cited
By later US patents
- Air cleaner using ionic wind123US 4,643,745 ANippon Soken, Inc. · 1987
- Electro-kinetic air transporter-conditioner122US 6,176,977 B1Sharper Image Corporation · 2001
- Two stage electrostatic precipitator with electric field induced airflow120US 4,231,766 AUnited Air Specialists, Inc. · 1980
- Portable personal corona discharge device for destruction of airborne microbes and chemical toxins111US 5,667,564 AWein Products, Inc. · 1997
- Electro-kinetic air refreshener-conditioner with optional night light103US 6,163,098 ASharper Image Corporation · 2000