G03G 15/0868
Toner cartridges fulfilling a continuous function within the electrographic apparatus during the
Official title: {Toner cartridges fulfilling a continuous function within the electrographic apparatus during the use of the supplied developer material, e.g. toner discharge on demand, storing residual toner, acting as an active closure for the developer replenishing opening}
G03G15/0868 (Toner cartridges fulfilling a continuous function within the electrographic apparatus during the) appears on 700 US grants and 596 published applications in this corpus.
Search patents in G03G- Granted patents
- 700
- Published applications
- 596
- Assignees
- 77
- Inventors
- 1,017
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 10 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 18 | 0 |
| 1997 | 10 | 0 |
| 1998 | 22 | 0 |
| 1999 | 13 | 0 |
| 2000 | 13 | 0 |
| 2001 | 10 | 3 |
| 2002 | 3 | 5 |
| 2003 | 8 | 11 |
| 2004 | 4 | 17 |
| 2005 | 15 | 25 |
| 2006 | 22 | 32 |
| 2007 | 22 | 35 |
| 2008 | 30 | 35 |
| 2009 | 24 | 37 |
| 2010 | 34 | 40 |
| 2011 | 36 | 43 |
| 2012 | 36 | 34 |
| 2013 | 34 | 21 |
| 2014 | 42 | 22 |
| 2015 | 23 | 24 |
| 2016 | 32 | 20 |
| 2017 | 20 | 17 |
| 2018 | 18 | 24 |
| 2019 | 30 | 26 |
| 2020 | 33 | 26 |
| 2021 | 13 | 20 |
| 2022 | 15 | 21 |
| 2023 | 22 | 18 |
| 2024 | 13 | 20 |
| 2025 | 21 | 12 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Developing device18 Aug 2026US 12,710,706 B2Canon Kabushiki Kaisha
- Image forming apparatus capable of suspending image formation of image forming device when access cover is open18 Aug 2026US 12,710,707 B2KYOCERA Document Solutions Inc.
- Image forming apparatus18 Aug 2026US 12,710,716 B2Canon Kabushiki Kaisha
- Silica particle, toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method19 May 2026US 12,631,983 B2FUJIFILM Business Innovation Corp.
- Toner cartridge having a wall with a curved portion and an image forming apparatus14 Apr 2026US 12,602,003 B2FUJIFILM Business Innovation Corp.
- Image forming apparatus13 Aug 2026US 2026/0235977 A1Canon Kabushiki Kaisha
- Image forming apparatus13 Aug 2026US 2026/0235978 A1Canon Kabushiki Kaisha
- Toner cartridge16 Jul 2026US 2026/0202776 A1General Plastic Industrial Co., Ltd.
- Toner cartridge16 Jul 2026US 2026/0202789 A1General Plastic Industrial Co., Ltd.
- Image forming apparatus11 Jun 2026US 2026/0161112 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Developer cartridge and developer replenishing apparatus121US 5,890,040 AKonica Corporation · 1999
- Image forming apparatus, toner supply unit, and toner bottle attached thereto114US 5,828,935 ARicoh Company, Ltd. · 1998
- Development unit and toner cartridge for use in an image formation apparatus109US 5,608,501 ABrother Kogyo Kabushiki Kaisha · 1997
- Developer replenishing device and developer container for use therewith103US 5,455,662 ARicoh Company, Ltd. · 1995
- Clean spiral toner cartridge99US 5,495,323 AXerox Corporation · 1996