G03G 15/086
The level being measured by electro-magnetic means
Official title: {the level being measured by electro-magnetic means}
G03G15/086 (The level being measured by electro-magnetic means) appears on 335 US grants and 280 published applications in this corpus.
Search patents in G03G- Granted patents
- 335
- Published applications
- 280
- Assignees
- 51
- Inventors
- 564
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 9 | 9 |
| 2002 | 14 | 13 |
| 2003 | 17 | 10 |
| 2004 | 9 | 3 |
| 2005 | 9 | 11 |
| 2006 | 7 | 5 |
| 2007 | 4 | 4 |
| 2008 | 2 | 4 |
| 2009 | 5 | 9 |
| 2010 | 3 | 6 |
| 2011 | 9 | 13 |
| 2012 | 9 | 15 |
| 2013 | 9 | 14 |
| 2014 | 15 | 18 |
| 2015 | 20 | 19 |
| 2016 | 25 | 18 |
| 2017 | 14 | 9 |
| 2018 | 13 | 17 |
| 2019 | 18 | 9 |
| 2020 | 14 | 15 |
| 2021 | 18 | 17 |
| 2022 | 12 | 14 |
| 2023 | 11 | 4 |
| 2024 | 3 | 2 |
| 2025 | 3 | 16 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image forming apparatus15 Sep 2026US 12,736,894 B2Canon Kabushiki Kaisha
- Image forming device that determines when to fill toner for forming images25 Aug 2026US 12,717,253 B2Sharp Kabushiki Kaisha
- Development device, process cartridge, and image forming apparatus28 Jul 2026US 12,693,623 B2Canon Kabushiki Kaisha
- Toner container having a magnet for toner level sensing11 Nov 2025US 12,468,238 B2Lexmark International, Inc.
- Image forming device and toner replenishment control method in image forming device11 Nov 2025US 12,468,250 B2Sharp Kabushiki Kaisha
- Image forming apparatus10 Sep 2026US 2026/0267280 A1Canon Kabushiki Kaisha
- Image forming apparatus20 Aug 2026US 2026/0244126 A1Canon Kabushiki Kaisha
- Developing device and image forming apparatus9 Jul 2026US 2026/0194838 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus11 Jun 2026US 2026/0161127 A1Canon Kabushiki Kaisha
- Toner container having a magnet for toner level sensing12 Feb 2026US 2026/0044095 A1Lexmark International, Inc.
Most cited
By later US patents
- Capacitive sensor168US 5,465,619 AXerox Corporation · 1995
- Process cartridge, method for assembling process cartridge and image forming appararatus167US 5,500,714 ACanon Kabushiki Kaisha · 1996
- Process cartridge, method for assembling process cartridge and image forming apparatus138US 5,543,898 ACanon Kabushiki Kaisha · 1996
- Capacitive toner level detection104US 6,670,817 B2Heidelberger Druckmaschinen AG · 2003
- Process cartridge, method for assembling process cartridge and image forming apparatus99US 5,617,579 ACanon Kabushiki Kaisha · 1997