B03B 5/447
Recovery of heavy media
Official title: {recovery of heavy media}
B03B5/447 (Recovery of heavy media) appears on 25 US grants and 6 published applications in this corpus.
Search patents in B03B- Granted patents
- 25
- Published applications
- 6
- Assignees
- 13
- Inventors
- 28
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Process and apparatus for recovering rare earth elements from coal refuse25 Nov 2025US 12,480,182 B2
- Process and apparatus for separating various elements such as cesium from refuse1 Jul 2025US 12,343,735 B2
- Process and apparatus for separating anthracite or bituminous from refuse18 Jun 2024US 12,011,725 B1
- Separation process with separation media loss reduction5 Oct 2021US 11,135,596 B2Feelgood Metals B.V.
- Technique for enhancing the effectiveness of slurried dense media separations26 Sep 2006US 7,111,738 B2MBA Polymers, Inc.
- Process and apparatus for recovering rare earth elements from coal refuse28 Aug 2025US 2025/0270675 A1
- Process and apparatus for separating various elements such as cesium from refuse15 Aug 2024US 2024/0269690 A1
- Process and apparatus for separating anthracite or bituminous from refuse4 Jul 2024US 2024/0216925 A1
- Underground coal hypergravity field separation system and separation process6 Oct 2022US 2022/0314233 A1China University of Mining and Technology
- Separation Process with Separation Media Loss Reduction28 Nov 2019US 2019/0358645 A1Feelgood Metals B.V.
Most cited
By later US patents
- Process for reducing sulfur emissions with calcium-containing sorbents75US 5,368,617 AGenesis Research Corporation · 1994
- Coal cleaning process31US 5,794,791 AGenesis Research Corporation · 1998
- Process for recovering usable materials from waste material containing metals and non-metals22US 4,036,441 AStamicarbon B. V. · 1977
- Process for non-destructive separation of mixtures containing plastics scrap22US 4,578,184 AAktieselskabet Nordiske Kabel-OG Traadfabriker · 1986
- Methods and apparatus for transporting and processing solids19US 4,265,737 AOtisca Industries, Ltd. · 1981