G03G 21/1623
Means to access the interior of the apparatus
Official title: {Means to access the interior of the apparatus}
G03G21/1623 (Means to access the interior of the apparatus) appears on 2,574 US grants and 2,400 published applications in this corpus.
Search patents in G03G- Granted patents
- 2,574
- Published applications
- 2,400
- Assignees
- 138
- Inventors
- 2,974
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 8 | 0 |
| 1984 | 11 | 0 |
| 1985 | 11 | 0 |
| 1986 | 21 | 0 |
| 1987 | 22 | 0 |
| 1988 | 18 | 0 |
| 1989 | 29 | 0 |
| 1990 | 31 | 0 |
| 1991 | 26 | 0 |
| 1992 | 26 | 0 |
| 1993 | 26 | 0 |
| 1994 | 33 | 0 |
| 1995 | 23 | 0 |
| 1996 | 29 | 0 |
| 1997 | 17 | 0 |
| 1998 | 27 | 0 |
| 1999 | 29 | 0 |
| 2000 | 20 | 0 |
| 2001 | 16 | 6 |
| 2002 | 15 | 16 |
| 2003 | 11 | 16 |
| 2004 | 19 | 17 |
| 2005 | 10 | 33 |
| 2006 | 22 | 65 |
| 2007 | 33 | 92 |
| 2008 | 39 | 64 |
| 2009 | 51 | 64 |
| 2010 | 72 | 85 |
| 2011 | 81 | 121 |
| 2012 | 81 | 105 |
| 2013 | 111 | 119 |
| 2014 | 149 | 140 |
| 2015 | 185 | 136 |
| 2016 | 163 | 128 |
| 2017 | 121 | 122 |
| 2018 | 108 | 112 |
| 2019 | 126 | 106 |
| 2020 | 100 | 98 |
| 2021 | 106 | 137 |
| 2022 | 112 | 119 |
| 2023 | 121 | 109 |
| 2024 | 103 | 131 |
| 2025 | 111 | 143 |
| 2026 | 83 | 116 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Image forming apparatus6 Oct 2026US 12,754,507 B2Konica Minolta, Inc.
- Medium transport device and recording apparatus29 Sep 2026US 12,746,770 B2Seiko Epson Corporation
- Image forming apparatus including developing device supporting structure having guide groove29 Sep 2026US 12,748,373 B2Brother Kogyo Kabushiki Kaisha
- Image forming apparatus and abnormality determination device15 Sep 2026US 12,736,907 B2Ricoh Company, Ltd.
- Image forming apparatus having locking device with failure detection15 Sep 2026US 12,736,911 B2Ricoh Company, Ltd.
- Image forming device including switch switching according to whether fixing device is mounted or removed8 Oct 2026US 2026/0310122 A1Brother Kogyo Kabushiki Kaisha
- Image forming apparatus8 Oct 2026US 2026/0310128 A1Sharp Kabushiki Kaisha
- Optical scanning device and image forming apparatus1 Oct 2026US 2026/0299459 A1Konica Minolta, Inc.
- Interlock mechanism and image forming apparatus1 Oct 2026US 2026/0299506 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus1 Oct 2026US 2026/0299512 A1Brother Kogyo Kabushiki Kaisha
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
- Process cartridge and image forming apparatus280US 5,585,889 ACanon Kabushiki Kaisha · 1996
- Process cartridge and drum mount for photosensitive drum213US 6,240,266 B1Canon Kabushiki Kaisha · 2001
- Process cartridge, electrophotographic image forming apparatus, driving force transmission part, and electrophotographic photosensitive drum160US 6,128,454 ACanon Kabushiki Kaisha · 2000
- Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus156US 6,400,914 B1Canon Kabushiki Kaisha · 2002