B01D 29/075
Located in a closed housing and comprising scrapers or agitators on the
Official title: located in a closed housing and comprising scrapers or agitators on the cake side of the filtering elements, e.g. Nutsche- or Rosenmund-type filters for performing multiple step operations such as chemical reactions, filtering and cake treatment
B01D29/075 (Located in a closed housing and comprising scrapers or agitators on the) appears on 27 US grants and 12 published applications in this corpus.
Search patents in B01D- Granted patents
- 27
- Published applications
- 12
- Assignees
- 22
- Inventors
- 52
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 1 |
| 2021 | 2 | 2 |
| 2022 | 0 | 0 |
| 2023 | 2 | 0 |
| 2024 | 1 | 3 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Agricultural sampling system and related methods7 Jul 2026US 12,673,278 B2Precision Planting LLC
- Devices and methods for the integrated filtration, drying, and mechanical processing of active pharmaceutical ingredients18 Mar 2025US 12,251,651 B2Massachusetts Institute of Technology
- Devices and methods for the integrated filtration, drying, and mechanical processing of active pharmaceutical ingredients27 Feb 2024US 11,911,719 B2Massachusetts Institute of Technology
- Devices and methods for the integrated filtration, drying, and mechanical processing of active pharmaceutical ingredients17 Oct 2023US 11,786,846 B2Massachusetts Institute of Technology
- Systems and methods for dewatering, extruding, and combusting blackwater21 Feb 2023US 11,584,660 B2Hall Labs LLC
- Debris removal from degasser probe19 Mar 2026US 2026/0078644 A1Schlumberger Technology Corporation
- A self-cleaning filter for liquids12 Jun 2025US 2025/0186910 A1Filtereco S.R.L.
- Filtering device for plastic materials with cleaning system22 Aug 2024US 2024/0278153 A1
- Agricultural sampling system and related methods13 Jun 2024US 2024/0189743 A1Precision Planting LLC
- Devices and methods for the integrated filtration, drying, and mechanical processing of active pharmaceutical ingredients29 Feb 2024US 2024/0066443 A1Massachusetts Institute of Technology
Most cited
By later US patents
- Filter devices and methods19US 4,399,042 AThe Dehydro Corporation · 1983
- Filtering apparatus17US 4,081,381 ARosenmund AG · 1978
- Filtering and drying apparatus14US 4,376,705 ANippon Dyeing Machine Manufacturing Co. Ltd. · 1983
- Filtration apparatus14US 4,417,980 ASchenk-Filterbau Gesellschaft mit beschrankter Haftung · 1983
- Suction filter11US 4,828,697 ASchenk-Filterbau Gesellschaft mit beschrankter Haftung · 1989