F01M 13/0033
Breather inlet-air filters
Official title: {Breather inlet-air filters}
F01M13/0033 (Breather inlet-air filters) appears on 26 US grants and 20 published applications in this corpus.
Search patents in F01M- Granted patents
- 26
- Published applications
- 20
- Assignees
- 18
- Inventors
- 57
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 4 |
| 2016 | 1 | 2 |
| 2017 | 1 | 0 |
| 2018 | 2 | 1 |
| 2019 | 1 | 1 |
| 2020 | 3 | 5 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Vehicle21 Oct 2025US 12,448,940 B2Kawasaki Motors, Ltd.
- Positive pressure air cleaning apparatus for a crankcase ventilation system27 Aug 2024US 12,071,871 B1Caterpillar Inc.
- Air intake system of engine27 Feb 2024US 11,913,413 B1FEV Europe GmbH
- Air cleaner; replaceable filter cartridges; and, methods25 Oct 2022US 11,478,741 B2Donaldson Company, Inc.
- Internal combustion engine16 Feb 2021US 10,920,630 B2Honda Motor Co., Ltd.
- Vehicle23 May 2024US 2024/0167442 A1Kawasaki Motors, Ltd.
- Vent with inversion protection7 Dec 2023US 2023/0392818 A1Donaldson Company, Inc.
- Air Cleaner; Replaceable Filter Cartridges; and, Methods5 Nov 2020US 2020/0346156 A1Donaldson Company, Inc.
- Heated inlet of a crankcase ventilation system6 Aug 2020US 2020/0248596 A1Caterpillar Inc.
- Breather canister for crankcase23 Jul 2020US 2020/0231346 A1Campbell Hausfeld, LLC
Most cited
By later US patents
- Air cleaner; replaceable filter cartridges; and, methods141US 7,070,642 B2Donaldson Company, Inc. · 2006
- Air cleaner; replaceable filter cartridges; and, methods88US 7,662,203 B2Donaldson Company, Inc. · 2010
- Air cleaner; replaceable filter cartridges; and, methods51US 7,988,757 B2Donaldson Company, Inc. · 2011
- Crankcase pressure regulation system for an internal combustion engine47US 5,499,616 ADresser Industries, Inc. · 1996
- Air cleaner with crankcase breather assembly31US 4,653,457 AGeneral Motors Corporation · 1987