B01D 29/27
Filter bags
B01D29/27 (Filter bags) appears on 411 US grants and 306 published applications in this corpus.
Search patents in B01D- Granted patents
- 411
- Published applications
- 306
- Assignees
- 189
- Inventors
- 599
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 10 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 12 | 0 |
| 1990 | 9 | 0 |
| 1991 | 11 | 0 |
| 1992 | 7 | 0 |
| 1993 | 13 | 0 |
| 1994 | 11 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 15 | 0 |
| 2001 | 14 | 2 |
| 2002 | 8 | 17 |
| 2003 | 14 | 20 |
| 2004 | 13 | 19 |
| 2005 | 20 | 10 |
| 2006 | 9 | 7 |
| 2007 | 4 | 8 |
| 2008 | 5 | 5 |
| 2009 | 2 | 4 |
| 2010 | 3 | 5 |
| 2011 | 7 | 8 |
| 2012 | 9 | 5 |
| 2013 | 6 | 10 |
| 2014 | 5 | 9 |
| 2015 | 6 | 9 |
| 2016 | 6 | 19 |
| 2017 | 11 | 14 |
| 2018 | 16 | 19 |
| 2019 | 16 | 22 |
| 2020 | 17 | 14 |
| 2021 | 14 | 14 |
| 2022 | 8 | 20 |
| 2023 | 11 | 17 |
| 2024 | 16 | 13 |
| 2025 | 12 | 12 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Microcarrier filter bag assemblies and methods of use28 Jul 2026US 12,691,394 B2Life Technologies Corporation
- Storm drain grate and filter apparatus and method2 Jun 2026US 12,644,272 B2Frog Creek Partners, LLC
- Flexible bag for the preparation of adipose tissue grafts and relative kit17 Mar 2026US 12,576,007 B2Biopsybell S.R.L.
- Structure for assembling and disassembling dirt suction head to/from filter bag10 Feb 2026US 12,544,692 B2Ningbo Dongchuan Swimming Pool Equipment Co., Inc.
- System and method for making resin solutions20 Jan 2026US 12,528,028 B2Lowtemp Industries LLC
- Storage device and coolant system24 Sep 2026US 2026/0284815 A1Fanuc Corporation
- Potato protein extraction apparatus and method27 Aug 2026US 2026/0250314 A1Root Extracts Limited
- Filter cartridge for aquarium; and methods30 Apr 2026US 2026/0115632 A1
- Oil extract of cannabis and method for obtaining12 Feb 2026US 2026/0041726 A1Concept Matrix Solutions
- System and method for removing per- and polyfluoroalkyl substances from ground water30 Oct 2025US 2025/0333333 A1South Central Connecticut Regional Water Authority
Most cited
By later US patents
- Storm drain liner102US 6,086,758 APacTec, Inc. · 2000
- Filter cartridge with a lugged concentric closure portion78US 4,956,086 AEverpure, Inc. · 1990
- Filter device73US 5,985,157 A1999
- Multiple layer filter bag including abrasion-resistant material72US 5,358,638 AISP Investments Inc. · 1994
- Storm drain line with riser 265US 6,562,233 B1PacTec, Inc. · 2003