B01D 29/445
Bar screens
Official title: {Bar screens}
B01D29/445 (Bar screens) appears on 256 US grants and 141 published applications in this corpus.
Search patents in B01D- Granted patents
- 256
- Published applications
- 141
- Assignees
- 146
- Inventors
- 349
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 12 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 14 | 0 |
| 1996 | 8 | 0 |
| 1997 | 2 | 0 |
| 1998 | 12 | 0 |
| 1999 | 7 | 0 |
| 2000 | 15 | 0 |
| 2001 | 13 | 1 |
| 2002 | 11 | 17 |
| 2003 | 12 | 12 |
| 2004 | 13 | 9 |
| 2005 | 4 | 4 |
| 2006 | 6 | 2 |
| 2007 | 4 | 9 |
| 2008 | 1 | 3 |
| 2009 | 1 | 7 |
| 2010 | 3 | 6 |
| 2011 | 7 | 8 |
| 2012 | 4 | 4 |
| 2013 | 2 | 4 |
| 2014 | 2 | 2 |
| 2015 | 3 | 3 |
| 2016 | 1 | 5 |
| 2017 | 5 | 6 |
| 2018 | 3 | 5 |
| 2019 | 4 | 3 |
| 2020 | 4 | 5 |
| 2021 | 4 | 5 |
| 2022 | 3 | 6 |
| 2023 | 4 | 4 |
| 2024 | 2 | 3 |
| 2025 | 2 | 6 |
| 2026 | 2 | 2 |
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
- Screening device for use in coarse matter screening wells of a waste water treatment plant24 Mar 2026US 12,583,762 B2Deyma La Mancha, S.L.
- Wetland system for treating domestic wastewater and rainwater and application thereof18 Mar 2025US 12,252,426 B2China Mcc5 Group Corp. Ltd
- Rake system and method14 Jan 2025US 12,194,399 B2
- Separation device and method to separate contaminants from contaminated water19 Mar 2024US 11,931,677 B2Hydra Water AB
- Screening Device, Screening Element and Method for Producing a Screening Device27 Aug 2026US 2026/0249215 A1Huber SE
- Wastewater screen filter and vibration monitor19 Mar 2026US 2026/0078018 A1Headworks International, Inc.
- Bernoulli filter device and method of cleaning a bernoulli filter device28 Aug 2025US 2025/0269306 A1Georg Schunemann GmbH
- Separating device and method of operating a separating device5 Jun 2025US 2025/0177888 A1Sulzer Management AG
- Screen cylinder with axially variable wear resistant coating thickness29 May 2025US 2025/0170503 A1Aikawa Fiber Technologies Oy
Most cited
By later US patents
- Mining screen device and grid structure therefor102US 5,385,669 AEnvironmental Procedures, Inc. · 1995
- Process for performing reactions in a liquid-solid catalyst slurry88US 5,527,473 A1996
- Filter with axially and rotatably movable wiper82US 5,569,383 ADelaware Capital Formation, Inc. · 1996
- Solid-liquid separating filter medium for sewage, waste water, etc81US 5,942,113 A1999
- Method and apparatus for collecting, defluidizing and disposing of oil and gas well drill cuttings77US 6,170,580 B22001