F02M 35/02491
Flat filter elements
Official title: {Flat filter elements, e.g. rectangular}
F02M35/02491 (Flat filter elements) appears on 132 US grants and 151 published applications in this corpus.
Search patents in F02M- Granted patents
- 132
- Published applications
- 151
- Assignees
- 57
- Inventors
- 261
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 3 |
| 2005 | 0 | 1 |
| 2006 | 2 | 0 |
| 2007 | 1 | 5 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 3 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 4 |
| 2013 | 4 | 9 |
| 2014 | 7 | 13 |
| 2015 | 8 | 18 |
| 2016 | 14 | 13 |
| 2017 | 12 | 14 |
| 2018 | 6 | 7 |
| 2019 | 14 | 12 |
| 2020 | 8 | 12 |
| 2021 | 9 | 11 |
| 2022 | 15 | 8 |
| 2023 | 6 | 8 |
| 2024 | 5 | 6 |
| 2025 | 6 | 1 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air filtering system for an aircraft12 May 2026US 12,623,174 B2Bmc Co., Ltd.
- Filter element and method for producing a filter element27 Jan 2026US 12,533,621 B2Mann+Hummel GmbH
- Filter element and filter system6 Jan 2026US 12,515,157 B2Mann+Hummel GmbH
- Filter element and filter system6 Jan 2026US 12,515,159 B2Mann+Hummel GmbH
- Air filter device and filter element for an air filter device of a motor vehicle2 Dec 2025US 12,485,374 B2Mercedes-Benz Group AG
- Reusable air filter system and method8 May 2025US 2025/0144555 A1K&N Engineering, Inc.
- Saddled vehicle3 Oct 2024US 2024/0328376 A1Honda Motor Co., Ltd.
- Filter system comprising filter housing, replaceable filter element, and resonator structure15 Aug 2024US 2024/0269589 A1Mann+Hummel GmbH
- Filter element for filter system and filter system comprising filter housing and replaceable filter element15 Aug 2024US 2024/0269595 A1Mann+Hummel GmbH
- Air filtering system for an aircraft13 Jun 2024US 2024/0189749 A1Bmc Co., Ltd.
Most cited
By later US patents
- Automotive air cleaner casing81US 5,730,768 AToyota Jidosha Kabushiki Kaisha · 1998
- Air filter element with retaining geometry49US 9,463,404 B2Mann+Hummel GmbH · 2016
- Air filter element with retaining geometry46US 9,446,339 B2Mann+Hummel GmbH · 2016
- Air filter element having a specific retaining geometry38US 9,579,596 B2Mann+Hummel GmbH · 2017
- Air filter arrangement; air cleaner assembly; and, methods33US 9,242,199 B2Donaldson Company, Inc. · 2016