G03G 21/1676
For the developer unit
Official title: {for the developer unit}
G03G21/1676 (For the developer unit) appears on 1,639 US grants and 1,751 published applications in this corpus.
Search patents in G03G- Granted patents
- 1,639
- Published applications
- 1,751
- Assignees
- 93
- Inventors
- 1,321
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 5 |
| 2002 | 5 | 6 |
| 2003 | 5 | 6 |
| 2004 | 7 | 7 |
| 2005 | 6 | 15 |
| 2006 | 7 | 18 |
| 2007 | 10 | 35 |
| 2008 | 15 | 20 |
| 2009 | 13 | 26 |
| 2010 | 31 | 29 |
| 2011 | 27 | 52 |
| 2012 | 37 | 57 |
| 2013 | 66 | 80 |
| 2014 | 86 | 101 |
| 2015 | 125 | 122 |
| 2016 | 140 | 96 |
| 2017 | 93 | 118 |
| 2018 | 109 | 98 |
| 2019 | 109 | 100 |
| 2020 | 121 | 135 |
| 2021 | 130 | 147 |
| 2022 | 117 | 97 |
| 2023 | 115 | 120 |
| 2024 | 99 | 87 |
| 2025 | 96 | 107 |
| 2026 | 43 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image forming apparatus29 Sep 2026US 12,748,361 B2Canon Kabushiki Kaisha
- Image forming apparatus including developing device supporting structure having guide groove29 Sep 2026US 12,748,373 B2Brother Kogyo Kabushiki Kaisha
- Image forming apparatus1 Sep 2026US 12,724,360 B2Ricoh Company, Ltd.
- Developing device and image forming apparatus including the same1 Sep 2026US 12,724,381 B2Sharp Kabushiki Kaisha
- Image forming apparatus25 Aug 2026US 12,717,259 B2Canon Kabushiki Kaisha
- Developing device1 Oct 2026US 2026/0299511 A1FUJIFILM Business Innovation Corp.
- 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 accommodating device, developing device, cartridge and image forming apparatus17 Sep 2026US 2026/0277134 A1Canon Kabushiki Kaisha
- Developing cartridge including developing roller and coupling17 Sep 2026US 2026/0277153 A1Brother Kogyo Kabushiki Kaisha
- System including image forming apparatus and server apparatus10 Sep 2026US 2026/0267579 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- System for forming color images217US 6,708,011 B2Seiko Epson Corporation · 2004
- Process cartridge and electrophotographic image forming apparatus155US 6,954,601 B2Canon Kabushiki Kaisha · 2005
- Electrical and fluidic interface for an ink supply144US 6,203,147 B1Hewlett-Packard Company · 2001
- Method and apparatus for storing information on a replaceable ink container131US 6,065,824 AHewlett-Packard Company · 2000
- Image-forming-apparatus process cartridge having a locking portion to prevent the cartridge from disengaging from the image forming apparatus and an image forming apparatus mounting such a cartridge102US 6,834,173 B2Canon Kabushiki Kaisha · 2004