G03G 2221/16
Mechanical means for facilitating the maintenance of the apparatus
Official title: Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
G03G2221/16 (Mechanical means for facilitating the maintenance of the apparatus) appears on 7,531 US grants and 6,953 published applications in this corpus.
Search patents in G03G- Granted patents
- 7,531
- Published applications
- 6,953
- Assignees
- 310
- Inventors
- 7,136
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 10 | 0 |
| 1984 | 15 | 0 |
| 1985 | 13 | 0 |
| 1986 | 33 | 0 |
| 1987 | 33 | 0 |
| 1988 | 32 | 0 |
| 1989 | 47 | 0 |
| 1990 | 52 | 0 |
| 1991 | 52 | 0 |
| 1992 | 56 | 0 |
| 1993 | 48 | 0 |
| 1994 | 66 | 0 |
| 1995 | 51 | 0 |
| 1996 | 68 | 0 |
| 1997 | 63 | 0 |
| 1998 | 117 | 0 |
| 1999 | 111 | 0 |
| 2000 | 122 | 0 |
| 2001 | 120 | 55 |
| 2002 | 135 | 170 |
| 2003 | 144 | 123 |
| 2004 | 123 | 180 |
| 2005 | 132 | 318 |
| 2006 | 202 | 389 |
| 2007 | 266 | 395 |
| 2008 | 285 | 375 |
| 2009 | 244 | 407 |
| 2010 | 355 | 364 |
| 2011 | 352 | 412 |
| 2012 | 398 | 267 |
| 2013 | 382 | 177 |
| 2014 | 350 | 256 |
| 2015 | 301 | 273 |
| 2016 | 330 | 248 |
| 2017 | 238 | 275 |
| 2018 | 277 | 288 |
| 2019 | 297 | 241 |
| 2020 | 270 | 264 |
| 2021 | 242 | 266 |
| 2022 | 266 | 258 |
| 2023 | 250 | 247 |
| 2024 | 225 | 222 |
| 2025 | 197 | 270 |
| 2026 | 135 | 213 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03G 2221/18Cartridge systemsIndexing code2,821
- G03G 2221/1651For connecting the different partsIndexing code2,733
- G03G 2221/1678Frame structuresIndexing code2,026
- G03G 2221/163For the developer unitIndexing code583
- G03G 2221/1606For the photosensitive elementIndexing code555
- G03G 2221/1672Paper handlingIndexing code473
- G03G 2221/1645For conducting air through the machineIndexing code385
- G03G 2221/1642For the transfer unitIndexing code356
All 17 subgroupsShow fewer
- G03G 2221/1618For the cleaning unitIndexing code325
- G03G 2221/1639For the fixing unitIndexing code298
- G03G 2221/1636For the exposure unitIndexing code256
- G03G 2221/1663Having lifetime indicatorsIndexing code212
- G03G 2221/1603For multicoloured copiesIndexing code211
- G03G 2221/1648Using sealsIndexing code185
- G03G 2221/1696For auxiliary devicesIndexing code139
- G03G 2221/1693For chargingIndexing code85
- G03G 2221/1669Details about used materialsIndexing code68
Recent patents
- Image carrier unit and image forming apparatus6 Oct 2026US 12,754,492 B2FUJIFILM Business Innovation Corp.
- Intermediate transfer unit and image forming apparatus with replaceable cleaning device6 Oct 2026US 12,754,495 B2Canon Kabushiki Kaisha
- Cartridge and image forming apparatus6 Oct 2026US 12,754,510 B2Canon Kabushiki Kaisha
- Roller driving apparatus used in image forming apparatus29 Sep 2026US 12,748,363 B2Canon Kabushiki Kaisha
- Cartridge, attachment and mounting kit29 Sep 2026US 12,748,372 B2Canon Kabushiki Kaisha
- Image forming apparatus8 Oct 2026US 2026/0310118 A1Canon Kabushiki Kaisha
- Fixing apparatus and image forming apparatus8 Oct 2026US 2026/0310119 A1Canon Kabushiki Kaisha
- 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
- Image forming apparatus and processing unit8 Oct 2026US 2026/0310129 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Monitor/warranty system for electrostatographic reproducing machines using replaceable cartridges419US 4,961,088 AXerox Corporation · 1990
- Replaceable part with integral memory for usage, calibration and other data311US 5,835,817 AHewlett-Packard Company · 1998
- 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
- Method of calibrating a spatial light modulator printing system280US 5,842,088 ATexas Instruments Incorporated · 1998