G03G 21/1842
For guiding and mounting the process cartridge, positioning, alignment, locks
Official title: {for guiding and mounting the process cartridge, positioning, alignment, locks (G03G21/1864 and G03G21/1871 take precedence)}
G03G21/1842 (For guiding and mounting the process cartridge, positioning, alignment, locks) appears on 1,758 US grants and 1,639 published applications in this corpus.
Search patents in G03G- Granted patents
- 1,758
- Published applications
- 1,639
- Assignees
- 93
- Inventors
- 1,390
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 11 | 0 |
| 1993 | 9 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 12 | 0 |
| 1997 | 10 | 0 |
| 1998 | 16 | 0 |
| 1999 | 18 | 0 |
| 2000 | 16 | 0 |
| 2001 | 14 | 11 |
| 2002 | 21 | 19 |
| 2003 | 9 | 10 |
| 2004 | 18 | 19 |
| 2005 | 14 | 37 |
| 2006 | 23 | 43 |
| 2007 | 37 | 34 |
| 2008 | 27 | 41 |
| 2009 | 29 | 56 |
| 2010 | 36 | 79 |
| 2011 | 60 | 63 |
| 2012 | 78 | 71 |
| 2013 | 81 | 72 |
| 2014 | 92 | 80 |
| 2015 | 93 | 85 |
| 2016 | 109 | 81 |
| 2017 | 78 | 107 |
| 2018 | 93 | 98 |
| 2019 | 113 | 93 |
| 2020 | 99 | 107 |
| 2021 | 119 | 103 |
| 2022 | 107 | 85 |
| 2023 | 94 | 81 |
| 2024 | 66 | 70 |
| 2025 | 65 | 63 |
| 2026 | 38 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cartridge and image forming apparatus6 Oct 2026US 12,754,510 B2Canon Kabushiki Kaisha
- Image forming apparatus29 Sep 2026US 12,748,361 B2Canon Kabushiki Kaisha
- Image forming apparatus29 Sep 2026US 12,748,374 B2Canon Kabushiki Kaisha
- Attachments to provide an aligning force15 Sep 2026US 12,736,914 B2Hewlett-Packard Development Company, L. P.
- Image forming apparatus8 Sep 2026US 12,730,408 B2Canon Kabushiki Kaisha
- Image forming apparatus and cartridge1 Oct 2026US 2026/0299510 A1Canon Kabushiki Kaisha
- Drum unit24 Sep 2026US 2026/0288056 A1Brother Kogyo Kabushiki Kaisha
- Process cartridge3 Sep 2026US 2026/0259524 A1Zhuhai Dinghui Technology Co., Ltd.
- Electronic apparatus, image forming apparatus, attachment-detachment device, and fixing device27 Aug 2026US 2026/0252027 A1Oki Electric Industry Co., Ltd.
- Image forming apparatus including movable drawer having guide surface for guiding attachment of process cartridge6 Aug 2026US 2026/0227741 A1Brother Kogyo Kabushiki Kaisha
Most cited
By later US patents
- 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
- Process cartridge and drum mount for photosensitive drum213US 6,240,266 B1Canon Kabushiki Kaisha · 2001
- Process cartridge, engaging member therefor and method for mounting developing roller and magnet196US 6,549,736 B2Canon Kabushiki Kaisha · 2003
- Process cartridge and electrophotographic image forming apparatus188US 5,943,529 ACanon Kabushiki Kaisha · 1999
- Developing apparatus with drive mechanism for developer bearing body183US 6,173,145 B2Canon Kabushiki Kaisha · 2001