G03G 21/1835
The process cartridge not comprising a photosensitive member
Official title: {the process cartridge not comprising a photosensitive member}
G03G21/1835 (The process cartridge not comprising a photosensitive member) appears on 21 US grants and 17 published applications in this corpus.
Search patents in G03G- Granted patents
- 21
- Published applications
- 17
- Assignees
- 8
- Inventors
- 49
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 2 | 3 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 0 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image-forming apparatus including mechanism for maintaining opening and closing states of shutter of fixing device through urging force of urging member21 Jul 2026US 12,687,814 B2Brother Kogyo Kabushiki Kaisha
- Image forming apparatus with a stopper member and an urging member7 Jul 2026US 12,675,071 B2Canon Kabushiki Kaisha
- Unit accommodation apparatus and image forming apparatus17 Sep 2024US 12,092,989 B2Ricoh Company, Ltd.
- Image-forming apparatus including cam and cam follower for moving developing roller toward and away from photosensitive drum18 May 2021US 11,009,806 B2Brother Kogyo Kabushiki Kaisha
- Charging member, charging device, process cartridge, and image forming apparatus3 Nov 2020US 10,824,087 B2Fuji Xerox Co., Ltd.
- Image forming apparatus with a stopper member and an urging member28 Aug 2025US 2025/0271811 A1Canon Kabushiki Kaisha
- Image-forming apparatus including mechanism for maintaining opening and closing states of shutter of fixing device through urging force of urging member6 Feb 2025US 2025/0044735 A1Brother Kogyo Kabushiki Kaisha
- Developing cartridge28 Nov 2024US 2024/0393741 A1Zhuhai Ninestar Information Technology Co., Ltd
- Unit accommodation apparatus and image forming apparatus7 Mar 2024US 2024/0077830 A1Ricoh Company, Ltd.
- Charging member, charging device, process cartridge, and image forming apparatus24 Sep 2020US 2020/0301306 A1Fuji Xerox Co., Ltd.
Most cited
By later US patents
- Process cartridge and image forming apparatus using the same40US 4,888,620 ACanon Kabushiki Kaisha · 1989
- Image forming apparatus having rotatable electrophotographic process unit28US 5,367,363 ARicoh Company, Ltd. · 1994
- Image forming apparatus having a removable image forming process kit23US 4,862,209 ARicoh Company, Ltd. · 1989
- Replacement of a cartridge usable with image forming equipment21US 4,943,828 ARicoh Company, Ltd. · 1990
- Cartridge-type apparatus for exchanging a developing device and toner supply container20US 4,692,018 AKonishiroku Photo Industry Co., Ltd. · 1987