G03G 2221/001
Plural sequential cleaning devices
G03G2221/001 (Plural sequential cleaning devices) appears on 149 US grants and 133 published applications in this corpus.
Search patents in G03G- Granted patents
- 149
- Published applications
- 133
- Assignees
- 35
- Inventors
- 346
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 6 |
| 2003 | 2 | 6 |
| 2004 | 3 | 3 |
| 2005 | 4 | 11 |
| 2006 | 6 | 7 |
| 2007 | 11 | 16 |
| 2008 | 11 | 6 |
| 2009 | 2 | 2 |
| 2010 | 8 | 14 |
| 2011 | 8 | 8 |
| 2012 | 5 | 10 |
| 2013 | 9 | 3 |
| 2014 | 9 | 2 |
| 2015 | 5 | 4 |
| 2016 | 7 | 11 |
| 2017 | 8 | 8 |
| 2018 | 7 | 2 |
| 2019 | 2 | 4 |
| 2020 | 1 | 2 |
| 2021 | 4 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 3 |
| 2024 | 3 | 3 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Image forming apparatus16 Sep 2025US 12,416,894 B2Ricoh Company, Ltd.
- Cleaning device and image forming apparatus incorporating same31 Dec 2024US 12,181,808 B2Ricoh Company, Ltd.
- Image forming apparatus9 Jul 2024US 12,032,322 B2Canon Kabushiki Kaisha
- Toner conveying device, cleaning device, process cartridge, and image forming apparatus9 Jan 2024US 11,868,065 B2Ricoh Company, Ltd.
- Rotating transport member with flexible section and rigid section25 Jul 2023US 11,709,451 B2FUJIFILM Business Innovation Corp.
- Electrostatic collecting device1 May 2025US 2025/0138470 A1Canon Kabushiki Kaisha
- Image forming apparatus12 Sep 2024US 2024/0302785 A1Canon Kabushiki Kaisha
- Image forming apparatus1 Aug 2024US 2024/0255890 A1Ricoh Company, Ltd.
- Cleaning device and image forming apparatus incorporating same25 Jan 2024US 2024/0027939 A1Ricoh Company, Ltd.
- Image forming apparatus configured to remove foreign matter stuck to member for adjusting clearance between developing roller and photoconductor drum28 Dec 2023US 2023/0418207 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Process cartridge and electrophotographic image forming apparatus69US 7,088,939 B2Canon Kabushiki Kaisha · 2006
- Apparatus and method for cleaning residual toner with a scraper blade periodically held in contact with a toner transfer surface46US 7,319,841 B2InfoPrint Solutions Company LLC · 2008
- Cleaning device and image forming apparatus using the same40US 6,799,012 B2Ricoh Company, Ltd. · 2004
- Electrophotographic device having a.c. biased cleaning member27US 4,875,081 AXerox Corporation · 1989
- Cleaning apparatus for an electrophotographic printing machine27US 5,416,572 AXerox Corporation · 1995