B03C 3/365
Located after the filter
Official title: {located after the filter}
B03C3/365 (Located after the filter) appears on 8 US grants and 14 published applications in this corpus.
Search patents in B03C- Granted patents
- 8
- Published applications
- 14
- Assignees
- 15
- Inventors
- 36
- Latest grant
- 3 Oct 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 2 |
| 2025 | 0 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aerosol particulate matter collecting device and collecting method3 Oct 2023US 11,772,018 B1Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology
- Air purification device and method3 Apr 2018US 9,931,641 B2Yiu Ming Chan
- Device for separating oil drops in a mixture of gas and oil and a separation method implementing such a separator device27 Feb 2018US 9,901,933 B2Mgi Coutier
- Apparatus for in real time detecting biological particle and non-biological particle in the atmosphere and method for detecting biological particle and non-biological particle using the same8 Aug 2017US 9,726,638 B2Industry-Academic Cooperation Foundation, Yonsei University
- Electrostatic precipitator5 Jan 2010US 7,641,718 B2Hidec Co., Ltd.
- Ducted Ventilation System, Particle Collection Unit and Method30 Jul 2026US 2026/0218929 A1E. Khoury Holding B.V.
- Devices and methods to reduce air pollution and global warming23 Jul 2026US 2026/0208207 A1Temple University of the Commonwealth System of Higher Education
- Vortex electric field purification device and design method therefor18 Sep 2025US 2025/0289005 A1AirQuality Technology (Shanghai) Co., Ltd.
- Ion box compatible with direct-current power supply and vortex power supply, and purification device18 Sep 2025US 2025/0289006 A1AirQuality Technology (Shanghai) Co., Ltd.
- Ambient air purifier with ozone catalyst12 Dec 2024US 2024/0408615 A1Woco GmbH & Co. KG
Most cited
By later US patents
- Air treatment apparatus having an electrode extending along an axis which is substantially perpendicular to an air flow path23US 7,318,856 B2Sharper Image Corporation · 2008
- Electrostatic precipitator6US 4,695,297 A1987
- Electrostatic precipitator6US 7,641,718 B2Hidec Co., Ltd. · 2010
- Apparatus for in real time detecting biological particle and non-biological particle in the atmosphere and method for detecting biological particle and non-biological particle using the same2US 9,726,638 B2Industry-Academic Cooperation Foundation, Yonsei University · 2017
- Method of air purification from dust and electrostatic filter1US 7,594,954 B22009