B03B 5/442
Composition of heavy media
Official title: {composition of heavy media}
B03B5/442 (Composition of heavy media) appears on 61 US grants and 31 published applications in this corpus.
Search patents in B03B- Granted patents
- 61
- Published applications
- 31
- Assignees
- 43
- Inventors
- 115
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 3 |
| 2010 | 2 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 2 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 2 | 4 |
| 2016 | 0 | 1 |
| 2017 | 3 | 3 |
| 2018 | 1 | 1 |
| 2019 | 1 | 4 |
| 2020 | 2 | 0 |
| 2021 | 2 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Separation of minerals by specific gravity15 Apr 2025US 12,275,020 B2Good Earth IP Holdings, LLC
- Separation of minerals by specific gravity8 Mar 2022US 11,267,000 B2
- Separation process for plastics materials1 Jun 2021US 11,020,751 B2Berry Plastics Corporation
- Separation of minerals by specific gravity12 Jan 2021US 10,888,877 B2
- Multiphase systems and uses thereof4 Aug 2020US 10,732,167 B2President and Fellows of Harvard College
- Separation of minerals by specific gravity9 Jul 2026US 2026/0192309 A1Good Earth IP Holdings, LLC
- Apparatus for separating materials recovered from batteries18 Jul 2024US 2024/0238800 A1Li-Cycle Corp.
- Systems and methods for separating bullets from backstop material6 Jun 2024US 2024/0181468 A11054610 Bc Ltd.
- Separation of minerals by specific gravity15 Dec 2022US 2022/0395842 A1
- Separation of minerals by specific gravity26 Dec 2019US 2019/0388906 A1
Most cited
By later US patents
- Process for reducing sulfur emissions with calcium-containing sorbents75US 5,368,617 AGenesis Research Corporation · 1994
- Pyrite removal from coal50US 4,324,560 AConoco Inc. · 1982
- Process for the separation of carpet materials33US 5,598,980 AZimmer, Inc. · 1997
- Method for the separation of high impact polystyrene (HIPS) and acrylonitrile butadiene styrene (ABS) plastics26US 5,653,867 AThe University of Chicago · 1997
- Gradient separation apparatus24US 3,998,383 AE. I. Du Pont de Nemours and Company · 1976