B01D 29/828
Using screws
Official title: {using screws (B01D29/6476 takes precedence)}
B01D29/828 (Using screws) appears on 53 US grants and 27 published applications in this corpus.
Search patents in B01D- Granted patents
- 53
- Published applications
- 27
- Assignees
- 37
- Inventors
- 97
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 1 |
| 2003 | 5 | 1 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 3 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 0 |
| 2015 | 2 | 1 |
| 2016 | 4 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 2 | 2 |
| 2022 | 0 | 1 |
| 2023 | 1 | 2 |
| 2024 | 2 | 0 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wastewater heat exchange system16 Sep 2025US 12,415,149 B2SHARC Energy Systems Inc.
- Reciprocating lamination spiral solid-liquid separator29 Jul 2025US 12,370,473 B2Dewlink Sludge Treatment Ltd
- Solid-liquid separation device2 Jul 2024US 12,024,448 B2Amcon, Inc.
- Separation device and method to separate contaminants from contaminated water19 Mar 2024US 11,931,677 B2Hydra Water AB
- Systems and methods for dewatering, extruding, and combusting blackwater21 Feb 2023US 11,584,660 B2Hall Labs LLC
- Separator device for dewatering wet matter4 Jun 2026US 2026/0151977 A1Vogelsang GmbH & Co. KG
- Wastewater heat exchange system21 Dec 2023US 2023/0405500 A1SHARC Energy Systems Inc.
- Reciprocating lamination spiral solid-liquid separator30 Mar 2023US 2023/0102465 A1Dewlink Sludge Treatment Ltd
- Solid-liquid separation device3 Mar 2022US 2022/0064044 A1Amcon, Inc.
- Systems and Methods for Dewatering, Extruding, and Combusting Blackwater30 Sep 2021US 2021/0300783 A1Hall Labs LLC
Most cited
By later US patents
- Method and apparatus for collecting, defluidizing and disposing of oil and gas well drill cuttings77US 6,170,580 B22001
- Method and apparatus for separating and deliquifying liquid slurries62US 5,833,851 A1998
- Screw press38US 6,634,508 B1Ishigaki Company Limited · 2003
- Continuous filter press35US 5,160,428 AKuri Chemical Engineers Incorporated · 1992
- Device for removing material screened or filtered out of a liquid flowing in a channel34US 4,859,322 A1989