G03G 21/1839
Means for handling the process cartridge in the apparatus body
Official title: {Means for handling the process cartridge in the apparatus body}
G03G21/1839 (Means for handling the process cartridge in the apparatus body) appears on 3,196 US grants and 3,034 published applications in this corpus.
Search patents in G03G- Granted patents
- 3,196
- Published applications
- 3,034
- Assignees
- 142
- Inventors
- 2,186
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 7 | 0 |
| 1989 | 6 | 0 |
| 1990 | 11 | 0 |
| 1991 | 13 | 0 |
| 1992 | 15 | 0 |
| 1993 | 17 | 0 |
| 1994 | 22 | 0 |
| 1995 | 12 | 0 |
| 1996 | 21 | 0 |
| 1997 | 18 | 0 |
| 1998 | 26 | 0 |
| 1999 | 38 | 0 |
| 2000 | 31 | 0 |
| 2001 | 36 | 17 |
| 2002 | 39 | 30 |
| 2003 | 15 | 27 |
| 2004 | 29 | 28 |
| 2005 | 33 | 61 |
| 2006 | 43 | 79 |
| 2007 | 58 | 75 |
| 2008 | 52 | 77 |
| 2009 | 51 | 92 |
| 2010 | 71 | 109 |
| 2011 | 97 | 105 |
| 2012 | 116 | 131 |
| 2013 | 132 | 138 |
| 2014 | 165 | 150 |
| 2015 | 184 | 160 |
| 2016 | 195 | 153 |
| 2017 | 158 | 190 |
| 2018 | 170 | 175 |
| 2019 | 195 | 159 |
| 2020 | 185 | 204 |
| 2021 | 205 | 196 |
| 2022 | 190 | 151 |
| 2023 | 169 | 160 |
| 2024 | 140 | 149 |
| 2025 | 131 | 146 |
| 2026 | 77 | 72 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03G 21/1842For guiding and mounting the process cartridge, positioning, alignment, locks1,758
- G03G 21/1857For transmitting mechanical drive power to the process cartridge, drive mechanisms, gears1,276
- G03G 21/1867For electrically connecting the process cartridge to the apparatus, electrical connectors, power665
Recent patents
- Developing cartridge6 Oct 2026US 12,754,494 B2Brother Kogyo Kabushiki Kaisha
- Cartridge and image forming apparatus6 Oct 2026US 12,754,510 B2Canon Kabushiki Kaisha
- Image forming apparatus29 Sep 2026US 12,748,361 B2Canon Kabushiki Kaisha
- Cartridge, attachment and mounting kit29 Sep 2026US 12,748,372 B2Canon Kabushiki Kaisha
- Image forming apparatus29 Sep 2026US 12,748,374 B2Canon Kabushiki Kaisha
- Electrophotographic image forming apparatus, cartridge and drum unit1 Oct 2026US 2026/0299509 A1Canon Kabushiki Kaisha
- Image forming apparatus and cartridge1 Oct 2026US 2026/0299510 A1Canon Kabushiki Kaisha
- Developing cartridge including movable shaft, and cam provided on shaft and having surface inclined relative thereto24 Sep 2026US 2026/0288055 A1Brother Kogyo Kabushiki Kaisha
- Drum unit24 Sep 2026US 2026/0288056 A1Brother Kogyo Kabushiki Kaisha
- Sheet-shaped sealing member, removable unit, and image forming apparatus17 Sep 2026US 2026/0277133 A1Ricoh Company, Ltd.
Most cited
By later US patents
- Process cartridge, electrophotographic image forming apparatus, driving force transmission part, and electrophotographic photosensitive drum289US 5,903,803 ACanon Kabushiki Kaisha · 1999
- Image forming apparatus, process cartridge mountable within it and method for attaching photosensitive drum to process cartridge262US 5,331,373 ACanon Kabushiki Kaisha · 1994
- Process cartridge and electrophotographic image forming apparatus255US 5,920,753 ACanon Kabushiki Kaisha · 1999
- Image forming apparatus, process cartridge mountable within it and method for attaching photosensitive drum to process cartridge245US 5,452,056 ACanon Kabushiki Kaisha · 1995
- Electrophotographic image forming apparatus to which a process cartridge is detachably mountable and process cartridge comprising cartridge drum positioning portion or recess242US 6,608,980 B2Canon Kabushiki Kaisha · 2003