B01D 46/18
Particle separators
Official title: Particle separators, e.g. dust precipitators, using filtering belts
B01D46/18 (Particle separators) appears on 113 US grants and 98 published applications in this corpus.
Search patents in B01D- Granted patents
- 113
- Published applications
- 98
- Assignees
- 75
- Inventors
- 224
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 4 |
| 2006 | 1 | 4 |
| 2007 | 2 | 2 |
| 2008 | 0 | 3 |
| 2009 | 2 | 6 |
| 2010 | 1 | 5 |
| 2011 | 0 | 5 |
| 2012 | 5 | 4 |
| 2013 | 4 | 2 |
| 2014 | 3 | 7 |
| 2015 | 2 | 2 |
| 2016 | 4 | 0 |
| 2017 | 1 | 6 |
| 2018 | 2 | 10 |
| 2019 | 6 | 5 |
| 2020 | 4 | 3 |
| 2021 | 3 | 8 |
| 2022 | 4 | 6 |
| 2023 | 6 | 3 |
| 2024 | 5 | 4 |
| 2025 | 4 | 3 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Automatically renewing air filter19 May 2026US 12,629,623 B2Infinity Filter, LLC
- Automated air filter21 Apr 2026US 12,605,666 B2
- Filtration device, filtration method and filtration filter14 Apr 2026US 12,599,854 B2Murata Manufacturing Co., Ltd.
- Exhaust gas emission circulation filtering apparatus for air pollution prevention16 Dec 2025US 12,496,545 B2Welter’s Co., Ltd.
- Automatic HVAC filter change system21 Oct 2025US 12,447,433 B1
- Filter Support Mechanism, Filter Support Apparatus, and Filter Apparatus6 Aug 2026US 2026/0225019 A1Siemens Aktiengesellschaft
- Systems and methods for scheduling filter maintenance of an imaging system23 Jul 2026US 2026/0208086 A1GE Precision Healthcare LLC
- Prefiltration structure for filter element and air purifier23 Oct 2025US 2025/0325932 A1Shenzhen Beibanqiu Network Technology Co., Ltd.
- Filter elements and assemblies18 Sep 2025US 2025/0288932 A1Donaldson Company, Inc.
- Membrane frame30 Jan 2025US 2025/0032965 A1
Most cited
By later US patents
- Filter system with automatic media refresh96US 7,186,290 B2Carrier Corporation · 2007
- Automated filter changing device and method70US 6,596,059 B1Skyline Products, Inc. · 2003
- Automatic air filter changer48US 4,221,576 A1980
- Air filter assembly47US 5,217,513 A1993
- Automatic filter cartridge43US 6,152,998 AFederal Air Conditioning Technologies, Inc. · 2000