B01D 27/08
Construction of the casing
B01D27/08 (Construction of the casing) appears on 630 US grants and 596 published applications in this corpus.
Search patents in B01D- Granted patents
- 630
- Published applications
- 596
- Assignees
- 256
- Inventors
- 1,141
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 11 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 8 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 12 | 0 |
| 1990 | 5 | 0 |
| 1991 | 11 | 0 |
| 1992 | 9 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 11 | 0 |
| 1997 | 19 | 0 |
| 1998 | 17 | 0 |
| 1999 | 17 | 0 |
| 2000 | 17 | 0 |
| 2001 | 15 | 5 |
| 2002 | 13 | 15 |
| 2003 | 13 | 14 |
| 2004 | 11 | 11 |
| 2005 | 13 | 17 |
| 2006 | 3 | 27 |
| 2007 | 7 | 20 |
| 2008 | 4 | 13 |
| 2009 | 7 | 16 |
| 2010 | 10 | 17 |
| 2011 | 8 | 12 |
| 2012 | 11 | 16 |
| 2013 | 10 | 27 |
| 2014 | 17 | 27 |
| 2015 | 10 | 27 |
| 2016 | 20 | 32 |
| 2017 | 20 | 39 |
| 2018 | 24 | 31 |
| 2019 | 35 | 35 |
| 2020 | 28 | 39 |
| 2021 | 29 | 30 |
| 2022 | 32 | 28 |
| 2023 | 21 | 26 |
| 2024 | 30 | 34 |
| 2025 | 24 | 24 |
| 2026 | 6 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Oil filter cartridge31 Mar 2026US 12,589,339 B2Hengst GmbH & Co. KG
- Filter valve assembly13 Jan 2026US 12,521,657 B2Collins Engine Nozzles, Inc.
- Filter arrangements for liquids and methods of use8 Oct 2026US 2026/0306976 A1Donaldson Company, Inc.
- Filter arrangements for liquids and methods of use1 Oct 2026US 2026/0295475 A1Donaldson Company, Inc.
- Spin-On Filter with Single Piece Housing and Snap-Together Assembly20 Aug 2026US 2026/0241311 A1Baldwin Filters, Inc.
- Liquid filter head adaptor23 Jul 2026US 2026/0208076 A1Cummins Filtration Inc.
- Cover plate assembly for spin-on filters23 Jul 2026US 2026/0208077 A1Mann+Hummel GmbH
Most cited
By later US patents
- Filter material construction and method335US 5,672,399 ADonaldson Company, Inc. · 1997
- Rolled liquid filter using fluted media291US 5,895,574 ADonaldson Company, Inc. · 1999
- Filter material construction and method190US 6,171,684 B2Donaldson Company, Inc. · 2001
- Quick-change filter cartridge and head therefor175US 4,735,716 ACuno Corporated · 1988
- Keyed filter assembly150US 6,458,269 B1Cuno Incorporated · 2002