B01D 2201/0461
Springs
B01D2201/0461 (Springs) appears on 79 US grants and 72 published applications in this corpus.
Search patents in B01D- Granted patents
- 79
- Published applications
- 72
- Assignees
- 43
- Inventors
- 170
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 3 |
| 2010 | 2 | 2 |
| 2011 | 2 | 1 |
| 2012 | 4 | 2 |
| 2013 | 1 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 4 |
| 2017 | 1 | 2 |
| 2018 | 1 | 7 |
| 2019 | 6 | 6 |
| 2020 | 8 | 10 |
| 2021 | 5 | 8 |
| 2022 | 4 | 4 |
| 2023 | 8 | 4 |
| 2024 | 2 | 4 |
| 2025 | 5 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for fluid filtration17 Mar 2026US 12,576,352 B2
- Filtration devices and associated filter element7 Oct 2025US 12,434,178 B2Donaldson Company, Inc.
- Filter arrangement and half coupling element comprising a filter arrangement30 Sep 2025US 12,427,455 B2Stäubli Hamburg GmbH
- Regenerative media filtration17 Jun 2025US 12,330,093 B2Blue Skies Global LLC
- Regenerative media filtration17 Jun 2025US 12,330,094 B2Blue Skies Global LLC
- Bile drainage and reinfusion device27 Aug 2026US 2026/0248995 A1Nanjing Drum Tower Hospital
- Filtration devices and associated filter element15 Jan 2026US 2026/0014502 A1Donaldson Company, Inc.
- Strainer2 Oct 2025US 2025/0303327 A1Systems Plant Services, Inc.
- Filter head assembly having a threaded bayonet connector adapter with a position tolerance improving retainer ring7 Aug 2025US 2025/0249383 A1Mann+Hummel GmbH
- Filter Cartridge and Mounting Mechanism23 Jan 2025US 2025/0025812 A1Avidity Science, LLC
Most cited
By later US patents
- Storm drain collection box filtration system70US 5,980,740 ACivitas Erosion Services, Inc. · 1999
- Differential-pressure valve39US 4,312,374 A1982
- Electrostatically dissipative fuel filter37US 5,076,920 AAllied-Signal Inc. · 1991
- Fluid filter holder33US 5,468,383 A1995
- One-piece anti-drainback and relief valve32US 5,284,579 ADana Corporation · 1994