B01D 46/0001
Making filtering elements
Official title: {Making filtering elements}
B01D46/0001 (Making filtering elements) appears on 1,051 US grants and 1,198 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,051
- Published applications
- 1,198
- Assignees
- 455
- Inventors
- 2,231
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 7 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 13 | 0 |
| 1997 | 23 | 0 |
| 1998 | 22 | 0 |
| 1999 | 19 | 0 |
| 2000 | 19 | 0 |
| 2001 | 25 | 13 |
| 2002 | 21 | 28 |
| 2003 | 19 | 33 |
| 2004 | 22 | 41 |
| 2005 | 29 | 42 |
| 2006 | 29 | 48 |
| 2007 | 16 | 54 |
| 2008 | 21 | 46 |
| 2009 | 20 | 44 |
| 2010 | 24 | 36 |
| 2011 | 44 | 26 |
| 2012 | 28 | 38 |
| 2013 | 37 | 32 |
| 2014 | 28 | 44 |
| 2015 | 33 | 72 |
| 2016 | 35 | 45 |
| 2017 | 41 | 59 |
| 2018 | 40 | 58 |
| 2019 | 61 | 41 |
| 2020 | 41 | 58 |
| 2021 | 34 | 82 |
| 2022 | 47 | 69 |
| 2023 | 32 | 62 |
| 2024 | 58 | 54 |
| 2025 | 46 | 46 |
| 2026 | 37 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter unit with a filter block, a damping layer and a housing, and process of manufacturing such a filter unit6 Oct 2026US 12,752,136 B2Dräger Safety AG & Co. KGaA
- Method for adjusting grouting parameters in preparation of ceramic composite fiber-based catalytic filter tube, and method and device for preparing ceramic composite fiber-based catalytic filter tube6 Oct 2026US 12,752,223 B2Zhejiang Zhiyuan Environmental Technology Co., Ltd
- Filtration assembly and system29 Sep 2026US RE51,044 E1Walk Industrial, Inc.
- Preparation method of bismuth ion filter membrane and application thereof15 Sep 2026US 12,734,470 B2Work Together Marketing Consultant Limited
- Embedding variable slit width embossed filter media packs15 Sep 2026US 12,734,471 B2Baldwin Filters, Inc.
- Air Filter8 Oct 2026US 2026/0309346 A1Zhongshan Scott Clean&Purification Co., Ltd.
- Adsorbent filter assembly1 Oct 2026US 2026/0295488 A1Donaldson Company, Inc.
- Coalescing separator insert, coalescing separator, and process for manufacturing a coalescing separator insert17 Sep 2026US 2026/0273445 A1Mann+Hummel GmbH
- Winding, method for manufacturing winding, welding electrode, and manufacturing device10 Sep 2026US 2026/0263978 A1Fuji Filter Manufacturing Co., Ltd.
- Filter and method for manufacturing same10 Sep 2026US 2026/0263982 A1NGK Insulators, Ltd.
Most cited
By later US patents
- Filter arrangement; sealing system; and methods402US 6,190,432 B1Donaldson Company, Inc. · 2001
- Air filtration arrangements having fluted media constructions and methods381US 6,673,136 B2Donaldson Company, Inc. · 2004
- Conical filter341US 5,902,364 ADonaldson Company, Inc. · 1999
- Filter arrangement; sealing system; and methods288US 6,350,291 B1Donaldson Company, Inc. · 2002
- Cylindrical air filter with radially directed seal258US 5,547,480 ADonaldson Company, Inc. · 1996