B03B 5/623
Upward current classifiers
Official title: {Upward current classifiers}
B03B5/623 (Upward current classifiers) appears on 165 US grants and 91 published applications in this corpus.
Search patents in B03B- Granted patents
- 165
- Published applications
- 91
- Assignees
- 99
- Inventors
- 275
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 7 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 8 |
| 2007 | 0 | 1 |
| 2008 | 2 | 3 |
| 2009 | 1 | 2 |
| 2010 | 2 | 8 |
| 2011 | 6 | 1 |
| 2012 | 2 | 1 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 2 | 8 |
| 2016 | 5 | 8 |
| 2017 | 8 | 6 |
| 2018 | 3 | 6 |
| 2019 | 6 | 5 |
| 2020 | 1 | 5 |
| 2021 | 8 | 2 |
| 2022 | 1 | 3 |
| 2023 | 2 | 7 |
| 2024 | 9 | 2 |
| 2025 | 3 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
- Separator apparatus and feed arrangement for increased capacity4 Nov 2025US 12,458,980 B2FLSmidth A/S
- System and method for four dimensionally separating materials5 Aug 2025US 12,377,421 B2
- Classifier and method of classifying4 Mar 2025US 12,240,016 B2
- Hydraulic density separation device12 Nov 2024US 12,138,635 B2LIG GmbH
- Method and apparatus for suspension separation utilizing a hydro-gravitational trap22 Oct 2024US 12,121,908 B2
- System and method for four dimensionally separating materials27 Nov 2025US 2025/0360514 A1
- Apparatus and method for separating materials using stratification17 Jul 2025US 2025/0229275 A1
- Method and apparatus for suspension separation utilizing a hydro-gravitational trap9 Jan 2025US 2025/0010311 A1
- Membrane spargers for gravity separators and flotation machines14 Nov 2024US 2024/0375123 A1FLSmidth A/S
- Hydraulic density separation device20 Jun 2024US 2024/0198355 A1LIG GmbH
Most cited
By later US patents
- Wet process recovery system for solid waste85US 5,104,047 A1992
- Thermal convection counter streaming sedimentation method for controlling the sex of mammalian offspring51US 4,067,965 A1978
- Z-axis flywheel control of a computer input device40US 6,064,370 AKye Systems Corp. · 2000
- Process and apparatus for disengaging and separating bitumen from pulverized tar sands using selective cohesion34US 5,066,388 A1991
- Multi-stage fluidization and segregation of used catalyst fractions32US 4,287,088 AHydrocarbon Research, Inc. · 1981