B01D 33/37
In parallel connection
Official title: in parallel connection
B01D33/37 (In parallel connection) appears on 197 US grants and 126 published applications in this corpus.
Search patents in B01D- Granted patents
- 197
- Published applications
- 126
- Assignees
- 120
- Inventors
- 348
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 1 |
| 2002 | 7 | 3 |
| 2003 | 6 | 7 |
| 2004 | 5 | 7 |
| 2005 | 3 | 9 |
| 2006 | 4 | 10 |
| 2007 | 5 | 5 |
| 2008 | 4 | 5 |
| 2009 | 4 | 5 |
| 2010 | 2 | 7 |
| 2011 | 6 | 7 |
| 2012 | 4 | 6 |
| 2013 | 6 | 7 |
| 2014 | 4 | 5 |
| 2015 | 4 | 3 |
| 2016 | 3 | 0 |
| 2017 | 3 | 9 |
| 2018 | 0 | 2 |
| 2019 | 4 | 4 |
| 2020 | 5 | 8 |
| 2021 | 5 | 3 |
| 2022 | 3 | 3 |
| 2023 | 3 | 5 |
| 2024 | 2 | 2 |
| 2025 | 0 | 0 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Bi-directional filter19 May 2026US 12,629,620 B2Combipro AS
- Rotatable filter7 Apr 2026US 12,594,513 B2Rocker Scientific Co., Ltd.
- Disc filter pre-screen dual media disc filter30 Jul 2024US 12,048,890 B2Evoqua Water Technologies LLC
- Continuous, approximately real-time residential wastewater treatment system and apparatus13 Feb 2024US 11,897,802 B2
- Apparatuses, methods, and systems for vibratory screening23 May 2023US 11,654,380 B2Derrick Corporation
- Device for cleaning liquid media using vacuum belt filters1 Oct 2026US 2026/0295478 A1
- Filter bag and filter module for a rotary disk filter and rotary disk filter2 Apr 2026US 2026/0091330 A1
- Screen with a gear rack for a shaker system22 Jan 2026US 2026/0021430 A1Schlumberger Technology Corporation
- Rotatable filter4 Jul 2024US 2024/0216842 A1Rocker Scientific Co., Ltd.
- Bi-directional filter29 Feb 2024US 2024/0066447 A1Combipro AS
Most cited
By later US patents
- Rotary filtration device and filter pack therefor74US 5,254,250 AMembrex, Inc. · 1993
- Rotary disc filtration device73US 5,143,630 AMembrex, Inc. · 1992
- Screen basket and shale shakers61US 7,216,767 B2Varco I/P, Inc. · 2007
- Vibratory separators and screens48US 6,722,504 B2Varco I/P, Inc. · 2004
- Backwash apparatus for multi element filter unit46US 4,642,188 ADover Corporation · 1987