B01D 29/33
Arranged for inward flow filtration
Official title: arranged for inward flow filtration
B01D29/33 (Arranged for inward flow filtration) appears on 383 US grants and 350 published applications in this corpus.
Search patents in B01D- Granted patents
- 383
- Published applications
- 350
- Assignees
- 278
- Inventors
- 880
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 9 | 0 |
| 2000 | 1 | 0 |
| 2001 | 8 | 2 |
| 2002 | 7 | 5 |
| 2003 | 6 | 8 |
| 2004 | 5 | 8 |
| 2005 | 3 | 7 |
| 2006 | 3 | 5 |
| 2007 | 5 | 4 |
| 2008 | 3 | 5 |
| 2009 | 3 | 4 |
| 2010 | 1 | 5 |
| 2011 | 3 | 5 |
| 2012 | 5 | 11 |
| 2013 | 4 | 8 |
| 2014 | 6 | 4 |
| 2015 | 5 | 9 |
| 2016 | 2 | 14 |
| 2017 | 4 | 20 |
| 2018 | 9 | 23 |
| 2019 | 25 | 25 |
| 2020 | 17 | 29 |
| 2021 | 22 | 37 |
| 2022 | 23 | 35 |
| 2023 | 21 | 17 |
| 2024 | 24 | 31 |
| 2025 | 24 | 20 |
| 2026 | 11 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Retrofitting and use of rectangular filters, assembly and method for filtration25 Aug 2026US 12,714,957 B2Filtration Technology Corporation
- Filter assembly25 Aug 2026US 12,716,481 B2Filtran LLC
- Storm water drain filter device18 Aug 2026US 12,709,885 B2
- Filter arrangements for liquids and methods of use28 Jul 2026US 12,691,395 B2Donaldson Company, Inc.
- Milking device, milk filter and filter cartridge9 Jun 2026US 12,648,542 B2Lely Patent N. V.
- Filter cartridge27 Aug 2026US 2026/0250158 A1Gopala AG
- Cover plate assembly for spin-on filters23 Jul 2026US 2026/0208077 A1Mann+Hummel GmbH
- Removable Cartridge Design with Threaded Center Tube2 Jul 2026US 2026/0183684 A1Parker-Hannifin Corporation
- Water Filter System and Method18 Jun 2026US 2026/0166452 A1
- Hot and cold water dispenser with filter for weekday and sabbath and method16 Apr 2026US 2026/0103400 A1S.B.I.D Solutions, Enterprise and Investments Ltd.
Most cited
By later US patents
- Filter element and manufacture method thereof141US 5,049,326 ANippondenso Co., Ltd. · 1991
- Molten metal filter cartridge115US 5,741,422 AMetaullics Systems Co., L.P. · 1998
- Filter element and manufacture method thereof95US 5,002,666 ANippondenso Co., Ltd. · 1991
- Filter cover for a purification insert in a water treatment device with a hollow tube80US 4,895,648 ABrita Wasser-Filter-Systeme GmbH · 1990
- Reusable fluid filter78US 5,258,118 AFleetguard, Inc. · 1993