B01D 2275/208
Oval shape
B01D2275/208 (Oval shape) appears on 179 US grants and 190 published applications in this corpus.
Search patents in B01D- Granted patents
- 179
- Published applications
- 190
- Assignees
- 40
- Inventors
- 250
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 3 |
| 2003 | 3 | 2 |
| 2004 | 3 | 0 |
| 2005 | 0 | 6 |
| 2006 | 2 | 2 |
| 2007 | 2 | 8 |
| 2008 | 5 | 7 |
| 2009 | 2 | 3 |
| 2010 | 4 | 8 |
| 2011 | 7 | 8 |
| 2012 | 9 | 11 |
| 2013 | 6 | 7 |
| 2014 | 8 | 8 |
| 2015 | 6 | 8 |
| 2016 | 3 | 18 |
| 2017 | 10 | 8 |
| 2018 | 6 | 4 |
| 2019 | 14 | 23 |
| 2020 | 9 | 12 |
| 2021 | 15 | 13 |
| 2022 | 11 | 6 |
| 2023 | 8 | 8 |
| 2024 | 16 | 11 |
| 2025 | 6 | 3 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Protuberant compressible filter seal design utilizing undercuts28 Apr 2026US 12,611,624 B2Atmus Filtration Inc.
- Filter element and filter arrangement6 Jan 2026US 12,515,154 B2Mann+Hummel GmbH
- Filter assemblies and elements utilizing multilayered and wrapped filter media6 Jan 2026US 12,515,162 B2Atmus Filtration IP Inc.
- Air cleaner assemblies and methods of use21 Oct 2025US 12,447,431 B2Donaldson Company, Inc.
- Arched air filter30 Sep 2025US 12,427,467 B2Cummins Filtration Inc.
- Protuberant compressible filter seal design utilizing undercuts13 Aug 2026US 2026/0233138 A1Atmus Filtration Inc.
- Filter element having two filter medium bodies arranged one inside the other9 Jul 2026US 2026/0192233 A1Mann+Hummel GmbH
- Filter assemblies and elements utilizing multilayered and wrapped filter media4 Jun 2026US 2026/0151723 A1Atmus Filtration IP Inc.
- Filter element and method of manufacturing a filter element30 Oct 2025US 2025/0332532 A1Donaldson Company, Inc.
- Filter cartridges; air cleaner assemblies; housings; features; components; and, methods1 May 2025US 2025/0135388 A1Donaldson Company, Inc.
Most cited
By later US patents
- Filter arrangement; sealing system; and methods402US 6,190,432 B1Donaldson Company, Inc. · 2001
- Filter arrangement; sealing system; and methods288US 6,350,291 B1Donaldson Company, Inc. · 2002
- Filter element, air cleaner, and methods268US 6,348,084 B1Donaldson Company, Inc. · 2002
- Filtration arrangement221US 5,238,474 ADonaldson Company, Inc. · 1993
- Non-round unitary filter cartridge193US 5,730,766 ABHA Group, Inc. · 1998