B03B 5/52
Spiral classifiers
B03B5/52 (Spiral classifiers) appears on 45 US grants and 27 published applications in this corpus.
Search patents in B03B- Granted patents
- 45
- Published applications
- 27
- Assignees
- 28
- Inventors
- 61
- Latest grant
- 12 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 3 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 2 | 3 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 2 |
| 2022 | 1 | 2 |
| 2023 | 3 | 2 |
| 2024 | 4 | 2 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic density separation device12 Nov 2024US 12,138,635 B2LIG GmbH
- Recycled glass pozzolan for concrete29 Oct 2024US 12,129,214 B1KLAW Industries LLC
- Material washing apparatus30 Jul 2024US 12,048,952 B2
- Apparatus for processing aggregate material19 Mar 2024US 11,931,746 B2CDE Global Limited
- Recycled glass pozzolan for concrete19 Sep 2023US 11,760,690 B2KLAW Industries LLC
- Mineral separation system19 Feb 2026US 2026/0048397 A1Mason-Grey Corporation
- Method and system for waste separation using a multi-spiral separator15 Aug 2024US 2024/0269687 A1
- Hydraulic density separation device20 Jun 2024US 2024/0198355 A1LIG GmbH
- Method and apparatus for separating synthetic turf infill material6 Apr 2023US 2023/0107362 A1
- Apparatus for processing aggregate material26 Jan 2023US 2023/0024835 A1CDE Global Limited
Most cited
By later US patents
- Screenings washer36US 7,081,171 B1JWC Environmental · 2006
- Apparatus for separation17US 6,096,201 ASpirac Engineering AB · 2000
- Coal washing apparatus15US 4,159,242 A1979
- Ore tailings treatment13US 4,059,506 AUnited States Steel Corporation · 1977
- Method and apparatus for the separation of manure and sand13US 5,720,393 ABoard of Trustees operating Michigan State University · 1998