B03C 7/006
Charging without electricity supply
Official title: {Charging without electricity supply, e.g. by tribo-electricity or pyroelectricity}
B03C7/006 (Charging without electricity supply) appears on 84 US grants and 63 published applications in this corpus.
Search patents in B03C- Granted patents
- 84
- Published applications
- 63
- Assignees
- 51
- Inventors
- 167
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 6 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 8 | 1 |
| 2003 | 1 | 1 |
| 2004 | 3 | 1 |
| 2005 | 2 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 2 |
| 2008 | 1 | 2 |
| 2009 | 2 | 3 |
| 2010 | 3 | 3 |
| 2011 | 1 | 2 |
| 2012 | 3 | 2 |
| 2013 | 1 | 3 |
| 2014 | 2 | 2 |
| 2015 | 2 | 4 |
| 2016 | 2 | 6 |
| 2017 | 2 | 2 |
| 2018 | 2 | 0 |
| 2019 | 1 | 0 |
| 2020 | 1 | 3 |
| 2021 | 0 | 4 |
| 2022 | 4 | 4 |
| 2023 | 0 | 4 |
| 2024 | 5 | 4 |
| 2025 | 5 | 4 |
| 2026 | 1 | 2 |
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
- Apparatus for separating the components of a mixture of fibres and granules by beating the mixture by means of an alternating electric field25 Nov 2025US 12,478,981 B2Centre National De La Recharche Scientifique
- Method and apparatus for electrostatic separation of glandular trichomes18 Nov 2025US 12,472,511 B1
- Process for protein enrichment of dried distillers grains using a tribo-electrostatic separator device1 Jul 2025US 12,343,736 B2ST Equipment & Technology LLC
- Electromagnetic separation of powders27 May 2025US 12,311,385 B1Rtx Corporation
- Method and apparatus for electrostatic separation of glandular trichomes16 Apr 2026US 2026/0102777 A1
- Method for separating a mixture of granules via the triboelectric effect5 Mar 2026US 2026/0061432 A1Skytech
- Electrostatic separation device for elastic mono filaments from cotton staple fiber yarns in fleeces21 Aug 2025US 2025/0263869 A1Säntis Textiles AG
- System for extracting water from lunar regolith and associated method24 Jul 2025US 2025/0237144 A1University of Central Florida Research Foundation, Inc.
- Apparatus for separating the components of a mixture of fibres and granules by beating the mixture by means of an alternating electric field3 Apr 2025US 2025/0108385 A1Centre National De La Recherche Scientifique
Most cited
By later US patents
- Separating constituents of a mixture of particles71US 4,874,507 A1989
- Plastics sorting apparatus61US 6,365,857 B1Hitachi Zosen Corporation · 2002
- Multistep separation of plastics38US 7,802,685 B2MBA Polymers, Inc. · 2010
- Electrostatic method of separating particulate materials35US 6,320,148 B12001
- Separation system and method of unburned carbon in flyash from a coal-fired power plant28US 5,885,330 A1999