B01D 29/111
Making filtering elements
Official title: {Making filtering elements}
B01D29/111 (Making filtering elements) appears on 774 US grants and 510 published applications in this corpus.
Search patents in B01D- Granted patents
- 774
- Published applications
- 510
- Assignees
- 400
- Inventors
- 1,392
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 11 | 0 |
| 1978 | 16 | 0 |
| 1979 | 3 | 0 |
| 1980 | 9 | 0 |
| 1981 | 13 | 0 |
| 1982 | 10 | 0 |
| 1983 | 9 | 0 |
| 1984 | 9 | 0 |
| 1985 | 12 | 0 |
| 1986 | 11 | 0 |
| 1987 | 14 | 0 |
| 1988 | 14 | 0 |
| 1989 | 17 | 0 |
| 1990 | 21 | 0 |
| 1991 | 16 | 0 |
| 1992 | 14 | 0 |
| 1993 | 18 | 0 |
| 1994 | 13 | 0 |
| 1995 | 16 | 0 |
| 1996 | 16 | 0 |
| 1997 | 35 | 0 |
| 1998 | 40 | 0 |
| 1999 | 34 | 0 |
| 2000 | 23 | 0 |
| 2001 | 24 | 8 |
| 2002 | 21 | 22 |
| 2003 | 16 | 27 |
| 2004 | 15 | 23 |
| 2005 | 20 | 17 |
| 2006 | 9 | 19 |
| 2007 | 8 | 18 |
| 2008 | 10 | 22 |
| 2009 | 5 | 14 |
| 2010 | 5 | 16 |
| 2011 | 15 | 17 |
| 2012 | 14 | 29 |
| 2013 | 22 | 36 |
| 2014 | 10 | 20 |
| 2015 | 12 | 20 |
| 2016 | 13 | 26 |
| 2017 | 14 | 17 |
| 2018 | 16 | 25 |
| 2019 | 17 | 16 |
| 2020 | 25 | 26 |
| 2021 | 17 | 26 |
| 2022 | 13 | 19 |
| 2023 | 15 | 14 |
| 2024 | 15 | 16 |
| 2025 | 14 | 13 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oil purification filter5 May 2026US 12,616,925 B2Skf Recondoil AB
- Filter and filter device31 Mar 2026US 12,589,338 B2Murata Manufacturing Co., Ltd.
- Fuel filter element24 Feb 2026US 12,560,139 B2Zhejiang Weitai Automobile Parts Co., Ltd.
- Separation component for a filter element10 Feb 2026US 12,544,704 B2Mann+Hummel GmbH
- Filter cartridge, and method of retrofitting filter housing27 Jan 2026US 12,533,612 B2Entegris, Inc.
- Single piece filtering element for a fluid recirculation system for an air conditioining system such as a system for cooling a battery assembly in particular for electric vehicles6 Aug 2026US 2026/0225007 A1Gvs S. P. A.
- Cartridge and method for cleaning water lines of an appliance25 Jun 2026US 2026/0176167 A1Electrolux Home Products, Inc.
- Filter cartridge, and method of retrofitting filter housing14 May 2026US 2026/0131266 A1Entegris, Inc.
- Network structure, porous complex, method of producing network structure, and method of producing porous complex1 Jan 2026US 2026/0001023 A1NGK Insulators, Ltd.
- Pleated fluid filter element and methods20 Nov 2025US 2025/0352927 A1Donaldson Company, Inc.
Most cited
By later US patents
- Corrugated filter element with external spiral tape support218US 4,402,830 APall Corporation · 1983
- Multi-element cylindrical filter with equalized flow185US 6,511,599 B2Nelson Industries, Inc. · 2003
- Filter cartridge with a connector seal179US 4,609,465 APall Corporation · 1986
- Internally potted end cap for a pleated filter medium147US 5,350,515 AW. L. Gore & Associates, Inc. · 1994
- Filter element and manufacture method thereof141US 5,049,326 ANippondenso Co., Ltd. · 1991