F02M 35/022
Acting by gravity, by centrifugal, or by other inertial forces
Official title: acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
F02M35/022 (Acting by gravity, by centrifugal, or by other inertial forces) appears on 229 US grants and 204 published applications in this corpus.
Search patents in F02M- Granted patents
- 229
- Published applications
- 204
- Assignees
- 121
- Inventors
- 471
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 5 | 1 |
| 2002 | 4 | 6 |
| 2003 | 3 | 3 |
| 2004 | 6 | 6 |
| 2005 | 2 | 5 |
| 2006 | 6 | 3 |
| 2007 | 4 | 7 |
| 2008 | 5 | 8 |
| 2009 | 3 | 8 |
| 2010 | 5 | 7 |
| 2011 | 4 | 8 |
| 2012 | 5 | 7 |
| 2013 | 4 | 6 |
| 2014 | 12 | 20 |
| 2015 | 10 | 15 |
| 2016 | 15 | 15 |
| 2017 | 7 | 8 |
| 2018 | 6 | 12 |
| 2019 | 9 | 5 |
| 2020 | 9 | 18 |
| 2021 | 9 | 12 |
| 2022 | 20 | 7 |
| 2023 | 7 | 4 |
| 2024 | 7 | 6 |
| 2025 | 2 | 5 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air cleaner bypass assembly and method of operating16 Jun 2026US 12,654,121 B2Donaldson Company, Inc.
- Multistage stage separation vortex flow air filter9 Jun 2026US 12,650,104 B2Volvo Truck Corporation
- Integrated manifold for pre-cleaner dust removal13 Jan 2026US 12,521,660 B2Caterpillar Inc.
- Cyclonic air filter assembly for an engine18 Mar 2025US 12,251,655 B2Briggs & Stratton Corporation
- Inertial separator and method of use11 Mar 2025US 12,247,535 B2Pall Corporation
- Assembly for a Vehicle11 Jun 2026US 2026/0160224 A1AGCO do Brasil Soluções Agrícolas Ltda.
- Modular air filter assembly5 Feb 2026US 2026/0034489 A1Caterpillar Inc.
- Air precleaner6 Nov 2025US 2025/0339800 A1
- Multistage Stage Separation Vortex Flow Air Filter10 Jul 2025US 2025/0223937 A1Volvo Truck Corporation
- Cyclonic air filter assembly for an engine15 May 2025US 2025/0153081 A1Briggs & Stratton Corporation
Most cited
By later US patents
- Precleaner assembly101US 4,159,899 AFram Corporation · 1979
- Vehicle filter assembly87US 7,938,871 B2Nissan North America, Inc. · 2011
- Precleaner arrangement for use in air filtration; method; and, air cleaner using same69US 7,364,601 B2Donaldson Company, Inc. · 2008
- Multi-stage cyclone separator65US 4,289,611 AKlockner-Humboldt-Deutz Akt. · 1981
- Air filter assembly for automotive fuel vapor recovery system64US 5,912,368 AFord Motor Company · 1999