B01D 36/001
Filters in combination with devices for the removal of gas, air purge
Official title: {Filters in combination with devices for the removal of gas, air purge systems}
B01D36/001 (Filters in combination with devices for the removal of gas, air purge) appears on 612 US grants and 449 published applications in this corpus.
Search patents in B01D- Granted patents
- 612
- Published applications
- 449
- Assignees
- 301
- Inventors
- 1,063
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 8 | 0 |
| 1982 | 9 | 0 |
| 1983 | 6 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 12 | 0 |
| 1988 | 10 | 0 |
| 1989 | 17 | 0 |
| 1990 | 14 | 0 |
| 1991 | 9 | 0 |
| 1992 | 17 | 0 |
| 1993 | 16 | 0 |
| 1994 | 8 | 0 |
| 1995 | 14 | 0 |
| 1996 | 10 | 0 |
| 1997 | 14 | 0 |
| 1998 | 16 | 0 |
| 1999 | 15 | 0 |
| 2000 | 9 | 0 |
| 2001 | 15 | 2 |
| 2002 | 9 | 15 |
| 2003 | 14 | 14 |
| 2004 | 7 | 16 |
| 2005 | 12 | 12 |
| 2006 | 12 | 14 |
| 2007 | 10 | 11 |
| 2008 | 8 | 9 |
| 2009 | 4 | 7 |
| 2010 | 7 | 9 |
| 2011 | 6 | 12 |
| 2012 | 8 | 13 |
| 2013 | 9 | 13 |
| 2014 | 5 | 10 |
| 2015 | 10 | 22 |
| 2016 | 10 | 13 |
| 2017 | 14 | 33 |
| 2018 | 21 | 21 |
| 2019 | 29 | 35 |
| 2020 | 32 | 34 |
| 2021 | 25 | 35 |
| 2022 | 31 | 31 |
| 2023 | 20 | 21 |
| 2024 | 21 | 22 |
| 2025 | 23 | 16 |
| 2026 | 13 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter apparatus with vented core, electrostatic discharge mitigation, or both18 Aug 2026US 12,708,867 B2Entegris, Inc.
- Water treatment system and method4 Aug 2026US 12,697,567 B2Drops Tech 2015 Ltd
- Filter device23 Jun 2026US 12,661,607 B2Hydac Filtertechnik GmbH
- Slurry filter assembly9 Jun 2026US 12,649,117 B2Precision Planting LLC
- Drain valve5 May 2026US 12,618,483 B2Gardner-Denver Company
- Filtration apparatus and method of controlling filtration apparatus1 Oct 2026US 2026/0295479 A1Renasys AS
- Filtration device, filtration system, and filtration method20 Aug 2026US 2026/0241313 A1Hitachi High-Tech Corporation
- Separation system, vacuum arrangement, and use of a separation stage13 Aug 2026US 2026/0233132 A1Von Ardenne Asset GmbH & Co. KG
- Filter device with burst-proof function11 Jun 2026US 2026/0158424 A1PA.E Machinery Industrial Co., Ltd.
- Automatic exhaust mechanism21 May 2026US 2026/0139677 A1Belgravia Wood Limited
Most cited
By later US patents
- Filter module with degassing feature227US 5,468,388 ASartorius AG · 1995
- Process for making hermetically sealed filter units and filters made thereby163US 4,113,627 AFiltertek Inc. · 1978
- Arterial blood filter with improved gas venting135US 4,411,783 AShiley Incorporated · 1983
- Water purification device with an intake funnel133US 4,969,996 ABrita Wasser-Filter-Systeme GmbH · 1990
- Arterial blood filter with upwardly inclining delivery inlet conduit118US 5,632,894 AGish Biomedical, Inc. · 1997