B01D 2201/52
Filter identification means
B01D2201/52 (Filter identification means) appears on 178 US grants and 219 published applications in this corpus.
Search patents in B01D- Granted patents
- 178
- Published applications
- 219
- Assignees
- 83
- Inventors
- 396
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 10 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 6 |
| 2003 | 7 | 8 |
| 2004 | 4 | 10 |
| 2005 | 4 | 4 |
| 2006 | 4 | 5 |
| 2007 | 0 | 1 |
| 2008 | 0 | 8 |
| 2009 | 5 | 7 |
| 2010 | 6 | 5 |
| 2011 | 3 | 15 |
| 2012 | 9 | 7 |
| 2013 | 7 | 11 |
| 2014 | 3 | 2 |
| 2015 | 3 | 5 |
| 2016 | 2 | 4 |
| 2017 | 4 | 6 |
| 2018 | 7 | 11 |
| 2019 | 14 | 15 |
| 2020 | 7 | 26 |
| 2021 | 16 | 19 |
| 2022 | 12 | 16 |
| 2023 | 17 | 6 |
| 2024 | 9 | 8 |
| 2025 | 8 | 10 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter assembly with authenticating filter element coupling and replaceable drop-in twist locking filter element therefor2 Jun 2026US 12,643,061 B2Schroeder Industries, Inc.
- Leak detection and response system for a pressure vessel5 May 2026US 12,616,924 B2Watts Regulator Co.
- Filter press with multi-function robot for maintenance, tracking and wear control of filtering septa31 Mar 2026US 12,589,337 B2Diemme Filtration S.R.L.
- Swimming pool filter detection system and method20 Jan 2026US 12,528,036 B2Pentair Water Pool and Spa, Inc.
- Multi-zone filtration monitoring systems and methods13 Jan 2026US 12,525,113 B2Donaldson Company, Inc.
- Swimming pool filter detection system and method28 May 2026US 2026/0145102 A1Pentair Water Pool and Spa, Inc.
- Filtering device assembly with passive bypass-switch unit28 May 2026US 2026/0145103 A1
- Water filter and home appliance having same9 Apr 2026US 2026/0097337 A1LG Electronics Inc.
- A sanitary filter device4 Dec 2025US 2025/0367580 A1T-Safe A/S
- Filter device4 Dec 2025US 2025/0367582 A1Yamashin-Filter Corp.
Most cited
By later US patents
- Device and method for monitoring the integrity of filtering installations289US 7,048,775 B2Sartorius AG · 2006
- Identification of filter media within a filtration system255US 10,143,948 B23M Innovative Properties Company · 2018
- Respiratory filter element having a storage device for keeping track of filter usage and a system for use therewith151US 6,186,140 B13M Innovative Properties Company · 2001
- Assembly of filtering apparatus and replaceable filter; and filtering apparatus and filter for use therein103US 5,674,381 ADoctro A.V.V. · 1997
- Filter cartridges having nonwoven melt blown filtration media with integral co-located support and filtration79US 5,591,335 AMemtec America Corporation · 1997