B01D 21/0054
Plates in form of a coil
Official title: {Plates in form of a coil}
B01D21/0054 (Plates in form of a coil) appears on 25 US grants and 20 published applications in this corpus.
Search patents in B01D- Granted patents
- 25
- Published applications
- 20
- Assignees
- 14
- Inventors
- 51
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 4 |
| 2017 | 4 | 1 |
| 2018 | 2 | 4 |
| 2019 | 3 | 1 |
| 2020 | 0 | 0 |
| 2021 | 2 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 2 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Separator assemblies and methods28 Apr 2026US 12,611,621 B2Battelle Memorial Institute
- Systems and processes for removing pollutants from water, reducing greenhouse gas emissions, and reducing aquatic ecosystem destruction27 Jun 2023US 11,685,682 B1
- Spring filter system16 Nov 2021US 11,173,423 B2
- Duct for use in a system for separating particles suspended in a fluid, and a method of designing such duct10 Aug 2021US 11,083,984 B2Aqua Hd Separation & Filtration Systems Ltd
- Liquid refinement9 Jul 2019US 10,343,088 B2Recovered Energy, Inc.
- Vertical Compact Flotation Unit with Air Stripping Enhanced Shallow Sedimentation Effect of Spiral Fins20 Feb 2025US 2025/0059069 A1Beijing Institute of Petrochemical Technology
- Separator Assemblies and Methods31 Oct 2024US 2024/0359118 A1Battelle Memorial Institute
- A baffle for a separator15 Aug 2024US 2024/0269582 A1Hydro International plc
- Spring Filter System2 Sep 2021US 2021/0268407 A1
- Particle setting devices11 Jul 2019US 2019/0210042 A1
Most cited
By later US patents
- Separation apparatus and method71US 5,840,198 AInternational Fluid Separation Pty Ltd · 1998
- Separators28US 5,575,909 A1996
- Liquid clarification system24US 4,192,746 A1980
- Small surface liquid decantation apparatus and process for making same20US 4,048,069 ABureau de Recherches Geologiques et Minieres · 1977
- Apparatus and system for concentrating slurry solids20US 7,135,107 B22006