B03C 7/12
With material falling free
Official title: with material falling free
B03C7/12 (With material falling free) appears on 54 US grants and 33 published applications in this corpus.
Search patents in B03C- Granted patents
- 54
- Published applications
- 33
- Assignees
- 36
- Inventors
- 137
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 2 | 1 |
| 2007 | 2 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 3 |
| 2012 | 0 | 2 |
| 2013 | 3 | 2 |
| 2014 | 1 | 1 |
| 2015 | 2 | 2 |
| 2016 | 0 | 1 |
| 2017 | 2 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 3 |
| 2022 | 4 | 2 |
| 2023 | 1 | 3 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Installation intended to separate, in an electric field, the components of a mixture of fibres and granules using a tribocharger provided with a grating for the selective confinement of said components13 Jan 2026US 12,521,731 B2Centre National De La Recherche Scientifique
- Method and apparatus for electrostatic separation of glandular trichomes18 Nov 2025US 12,472,511 B1
- Electromagnetic separation of powders27 May 2025US 12,311,385 B1Rtx Corporation
- Method for designing an electrostatic separating device of a mixture of different material granules and associated devices25 Jun 2024US 12,019,962 B2Skytech
- Method for separating and collecting single aggregate from fumed silica and method for classifying shape of single aggregate6 Feb 2024US 11,890,621 B2Oci Company Ltd.
- Method and apparatus for electrostatic separation of glandular trichomes16 Apr 2026US 2026/0102777 A1
- Installation intended to separate, in an electric field, the components of a mixture of fibres and granules using a tribocharger provided with a grating for the selective confinement of said components16 Jan 2025US 2025/0018403 A1Centre National De La Recherche Scientifique
- Curvilinear classification of feed stock28 Nov 2024US 2024/0390942 A1Tate & Lyle Solutions USA LLC
- Curvilinear surface classification of feed stock16 Mar 2023US 2023/0079820 A1Tate & Lyle Solutions USA LLC
- Method for Separating and Collecting Single Aggregate from Fumed Silica and Method for Classifying Shape of Single Aggregate23 Feb 2023US 2023/0057388 A1Oci Company Ltd.
Most cited
By later US patents
- Fine particle separation by electrostatically induced oscillation35US 4,172,028 AElectro-Power-Tech., Inc. · 1979
- Method of separating a mixture of plastics comprising at least three components using electrostatic techniques26US 5,358,119 AKali und Salz Aktiengesellschaft · 1994
- Microparticle fractionating apparatus and method of fractionating microparticle26US 9,784,659 B2Sony Corporation · 2017
- Electrostatic separation of particles25US 5,251,762 ACarpco, Inc. · 1993
- Electrostatic free-fall separator24US 4,797,201 AKali und Salz Aktiengesellschaft · 1989