G03G 15/0867
Cylindrical developer cartridges
Official title: {cylindrical developer cartridges, e.g. toner bottles for the developer replenishing opening}
G03G15/0867 (Cylindrical developer cartridges) appears on 2,081 US grants and 1,937 published applications in this corpus.
Search patents in G03G- Granted patents
- 2,081
- Published applications
- 1,937
- Assignees
- 138
- Inventors
- 2,114
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 14 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 11 | 0 |
| 1995 | 14 | 0 |
| 1996 | 25 | 0 |
| 1997 | 17 | 0 |
| 1998 | 34 | 0 |
| 1999 | 28 | 0 |
| 2000 | 28 | 0 |
| 2001 | 25 | 6 |
| 2002 | 17 | 13 |
| 2003 | 21 | 29 |
| 2004 | 14 | 37 |
| 2005 | 30 | 45 |
| 2006 | 35 | 68 |
| 2007 | 41 | 84 |
| 2008 | 59 | 96 |
| 2009 | 57 | 93 |
| 2010 | 100 | 82 |
| 2011 | 88 | 92 |
| 2012 | 101 | 74 |
| 2013 | 79 | 65 |
| 2014 | 93 | 81 |
| 2015 | 84 | 67 |
| 2016 | 101 | 76 |
| 2017 | 72 | 94 |
| 2018 | 92 | 104 |
| 2019 | 113 | 107 |
| 2020 | 119 | 118 |
| 2021 | 107 | 130 |
| 2022 | 114 | 91 |
| 2023 | 86 | 87 |
| 2024 | 69 | 88 |
| 2025 | 87 | 76 |
| 2026 | 42 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Image forming apparatus including toner conveyance detection portion detecting toner conveyance error in toner conveyance29 Sep 2026US 12,748,364 B2KYOCERA Document Solutions Inc.
- Toner container and image forming system15 Sep 2026US 12,736,897 B2Canon Kabushiki Kaisha
- Image forming apparatus having locking device with failure detection15 Sep 2026US 12,736,911 B2Ricoh Company, Ltd.
- Toner container capable of facilitating cleaning task before reuse, image forming apparatus, and manufacturing method of toner container1 Sep 2026US 12,724,379 B2KYOCERA Document Solutions Inc.
- Process cartridge, image forming apparatus and toner storage unit25 Aug 2026US 12,717,271 B2Brother Kogyo Kabushiki Kaisha
- Developing cartridge including holder holding electrical contact surface and supported by gear cover1 Oct 2026US 2026/0299463 A1Brother Kogyo Kabushiki Kaisha
- Image forming apparatus24 Sep 2026US 2026/0288042 A1
- Developing cartridge including movable shaft, and cam provided on shaft and having surface inclined relative thereto24 Sep 2026US 2026/0288055 A1Brother Kogyo Kabushiki Kaisha
- Developer supply container and developer supplying system17 Sep 2026US 2026/0277131 A1Canon Kabushiki Kaisha
- Toner storage container17 Sep 2026US 2026/0277132 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Toner bottle, toner supply system and image forming apparatus using same133US 6,185,401 B2Canon Kabushiki Kaisha · 2001
- 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