G03G 2221/163
For the developer unit
Official title: for the developer unit
G03G2221/163 (For the developer unit) appears on 583 US grants and 477 published applications in this corpus.
Search patents in G03G- Granted patents
- 583
- Published applications
- 477
- Assignees
- 86
- Inventors
- 879
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 10 | 0 |
| 1991 | 10 | 0 |
| 1992 | 9 | 0 |
| 1993 | 12 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 13 | 0 |
| 1997 | 12 | 0 |
| 1998 | 21 | 0 |
| 1999 | 17 | 0 |
| 2000 | 10 | 0 |
| 2001 | 5 | 4 |
| 2002 | 7 | 6 |
| 2003 | 8 | 9 |
| 2004 | 7 | 6 |
| 2005 | 4 | 21 |
| 2006 | 14 | 30 |
| 2007 | 16 | 42 |
| 2008 | 18 | 33 |
| 2009 | 25 | 44 |
| 2010 | 40 | 17 |
| 2011 | 34 | 36 |
| 2012 | 43 | 21 |
| 2013 | 35 | 14 |
| 2014 | 22 | 14 |
| 2015 | 20 | 19 |
| 2016 | 13 | 7 |
| 2017 | 7 | 9 |
| 2018 | 11 | 15 |
| 2019 | 15 | 11 |
| 2020 | 12 | 8 |
| 2021 | 13 | 14 |
| 2022 | 10 | 16 |
| 2023 | 13 | 7 |
| 2024 | 7 | 9 |
| 2025 | 12 | 28 |
| 2026 | 10 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Toner cartridge and image forming apparatus22 Sep 2026US 12,743,040 B2Canon Kabushiki Kaisha
- Image forming apparatus22 Sep 2026US 12,743,048 B2Canon Kabushiki Kaisha
- Developing device and image forming apparatus including the same1 Sep 2026US 12,724,381 B2Sharp Kabushiki Kaisha
- Storage assembly and mountable unit28 Jul 2026US 12,693,613 B2Jiangxi Yibo E-Tech Co. Ltd.
- Developing cartridge including shaft and cam positioned on opposite side of casing from developing roller and movable in axial direction of developing roller28 Jul 2026US 12,693,614 B2Brother Kogyo Kabushiki Kaisha
- Developing device1 Oct 2026US 2026/0299511 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus17 Sep 2026US 2026/0277151 A1KYOCERA Document Solutions Inc.
- Image forming apparatus10 Sep 2026US 2026/0267280 A1Canon Kabushiki Kaisha
- Image forming apparatus10 Sep 2026US 2026/0267282 A1Canon Kabushiki Kaisha
- System including image forming apparatus and server apparatus10 Sep 2026US 2026/0267579 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Process cartridge and electrophotographic image forming apparatus255US 5,920,753 ACanon Kabushiki Kaisha · 1999
- Process cartridge, engaging member therefor and method for mounting developing roller and magnet196US 6,549,736 B2Canon Kabushiki Kaisha · 2003
- Toner container, toner container assembling method, process cartridge, and electrophotographic image forming apparatus173US 5,878,309 ACanon Kabushiki Kaisha · 1999
- Process cartridge, unit, and electrophotographic image forming apparatus169US 6,912,365 B2Canon Kabushiki Kaisha · 2005
- Process cartridge, method for assembling process cartridge and image forming appararatus167US 5,500,714 ACanon Kabushiki Kaisha · 1996