B01D 2273/14
Filters which are moved between two or more positions
Official title: Filters which are moved between two or more positions, e.g. by turning, pushing
B01D2273/14 (Filters which are moved between two or more positions) appears on 70 US grants and 67 published applications in this corpus.
Search patents in B01D- Granted patents
- 70
- Published applications
- 67
- Assignees
- 64
- Inventors
- 174
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 3 |
| 2005 | 2 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 3 | 1 |
| 2010 | 0 | 2 |
| 2011 | 2 | 7 |
| 2012 | 4 | 4 |
| 2013 | 4 | 2 |
| 2014 | 3 | 3 |
| 2015 | 1 | 3 |
| 2016 | 2 | 3 |
| 2017 | 3 | 3 |
| 2018 | 4 | 4 |
| 2019 | 1 | 3 |
| 2020 | 2 | 6 |
| 2021 | 3 | 2 |
| 2022 | 6 | 6 |
| 2023 | 2 | 3 |
| 2024 | 5 | 4 |
| 2025 | 4 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compressor system and filter housing19 May 2026US 12,629,625 B2Ingersoll-Rand Industrial U.S., Inc.
- Exhaust gas emission circulation filtering apparatus for air pollution prevention16 Dec 2025US 12,496,545 B2Welter’s Co., Ltd.
- Air inlet barrier filter for a helicopter22 Jul 2025US 12,365,473 B1Pratt & Whitney Canada Corp.
- Demister with rinse-in-place filters and method15 Jul 2025US 12,357,937 B1Quickdraft, Inc.
- Removable flue gas strainer and associated methods27 May 2025US 12,311,305 B2Marathon Petroleum Company LP
- Air Purification System16 Jul 2026US 2026/0199816 A1
- Filter-housing interface designs for heating, ventilation, and air conditioning systems2 Jan 2025US 2025/0001342 A1Research Products Corporation
- Exhaust Gas Emission Circulation Filtering Apparatus for Air Pollution Prevention7 Nov 2024US 2024/0367083 A1Welter’s Co., Ltd.
- Compressor system and filter housing29 Aug 2024US 2024/0286070 A1Ingersoll-Rand Industrial U.S., Inc.
- Removable flue gas strainer and associated methods13 Jun 2024US 2024/0189753 A1Marathon Petroleum Company LP
Most cited
By later US patents
- Filter candle64US 5,223,012 AThomas Josef Heimbach GmbH & Co. · 1993
- Separator assembly51US 4,312,645 AParmatic Filter Corporation · 1982
- Circulation and disposal device for multi-purpose sterilization chambers and washing chambers48US 7,981,361 B2American Sterilizer Company · 2011
- Room air decontamination device41US 5,837,040 AInternational Decontamination Systems LLC · 1998
- Self-cleaning air filter40US 4,204,846 ADonaldson Company, Inc. · 1980