G03G 21/0076
Plural or sequential cleaning devices
Official title: {Plural or sequential cleaning devices}
G03G21/0076 (Plural or sequential cleaning devices) appears on 203 US grants and 195 published applications in this corpus.
Search patents in G03G- Granted patents
- 203
- Published applications
- 195
- Assignees
- 40
- Inventors
- 450
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 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 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 6 |
| 2003 | 2 | 6 |
| 2004 | 3 | 3 |
| 2005 | 4 | 11 |
| 2006 | 6 | 8 |
| 2007 | 11 | 16 |
| 2008 | 11 | 6 |
| 2009 | 2 | 3 |
| 2010 | 8 | 14 |
| 2011 | 9 | 8 |
| 2012 | 5 | 17 |
| 2013 | 12 | 8 |
| 2014 | 15 | 4 |
| 2015 | 10 | 8 |
| 2016 | 11 | 12 |
| 2017 | 7 | 7 |
| 2018 | 10 | 11 |
| 2019 | 10 | 11 |
| 2020 | 8 | 8 |
| 2021 | 5 | 2 |
| 2022 | 5 | 4 |
| 2023 | 2 | 5 |
| 2024 | 5 | 9 |
| 2025 | 3 | 4 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Image forming apparatus25 Aug 2026US 12,717,266 B2Canon Kabushiki Kaisha
- Metal material printing equipment and printing method, and printed metal material obtained therefrom18 Aug 2026US 12,710,719 B2Posco
- Movable cleaning device4 Aug 2026US 12,699,339 B2Hewlett-Packard Development Company, L. P.
- Image forming apparatus28 Apr 2026US 12,613,489 B2Canon Kabushiki Kaisha
- Image forming apparatus16 Sep 2025US 12,416,894 B2Ricoh Company, Ltd.
- Cleaning device and image forming apparatus13 Aug 2026US 2026/0235979 A1FUJIFILM Business Innovation Corp.
- Cartridge and image forming apparatus9 Jul 2026US 2026/0194853 A1Canon Kabushiki Kaisha
- Movable cleaning device5 Mar 2026US 2026/0064044 A1Hewlett-Packard Development Company, L. P.
- Image forming apparatus29 Jan 2026US 2026/0029744 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus6 Nov 2025US 2025/0341802 A1Canon Kabushiki Kaisha
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