G03G 21/18
Using a processing cartridge , whereby the process cartridge comprises at least
Official title: using a processing cartridge {, whereby the process cartridge comprises at least two image processing means in a single unit}
G03G21/18 (Using a processing cartridge , whereby the process cartridge comprises at least) appears on 6,199 US grants and 5,910 published applications in this corpus.
Search patents in G03G- Granted patents
- 6,199
- Published applications
- 5,910
- Assignees
- 238
- Inventors
- 4,776
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 15 | 0 |
| 1987 | 14 | 0 |
| 1988 | 17 | 0 |
| 1989 | 24 | 0 |
| 1990 | 25 | 0 |
| 1991 | 35 | 0 |
| 1992 | 41 | 0 |
| 1993 | 49 | 0 |
| 1994 | 43 | 0 |
| 1995 | 35 | 0 |
| 1996 | 46 | 0 |
| 1997 | 45 | 0 |
| 1998 | 75 | 0 |
| 1999 | 78 | 0 |
| 2000 | 91 | 0 |
| 2001 | 86 | 43 |
| 2002 | 87 | 116 |
| 2003 | 96 | 91 |
| 2004 | 91 | 96 |
| 2005 | 90 | 160 |
| 2006 | 121 | 177 |
| 2007 | 124 | 149 |
| 2008 | 108 | 155 |
| 2009 | 111 | 165 |
| 2010 | 149 | 174 |
| 2011 | 155 | 209 |
| 2012 | 180 | 217 |
| 2013 | 224 | 267 |
| 2014 | 299 | 306 |
| 2015 | 360 | 281 |
| 2016 | 359 | 271 |
| 2017 | 286 | 354 |
| 2018 | 311 | 308 |
| 2019 | 343 | 281 |
| 2020 | 348 | 381 |
| 2021 | 346 | 376 |
| 2022 | 342 | 304 |
| 2023 | 303 | 299 |
| 2024 | 229 | 268 |
| 2025 | 229 | 286 |
| 2026 | 168 | 176 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Toner, developer, toner storage unit, image forming apparatus, and image forming method8 Oct 2026US 2026/0310110 A1
- Electrostatic charge image developing toner set, electrostatic charge image developer set, toner cartridge set, process cartridge, and image forming apparatus1 Oct 2026US 2026/0299451 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus1 Oct 2026US 2026/0299508 A1FUJIFILM Business Innovation Corp.
- 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
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