G03G 2215/022
Using a magnetic brush
Official title: using a magnetic brush
G03G2215/022 (Using a magnetic brush) appears on 120 US grants and 47 published applications in this corpus.
Search patents in G03G- Granted patents
- 120
- Published applications
- 47
- Assignees
- 15
- Inventors
- 161
- Latest grant
- 22 Sep 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 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 10 | 0 |
| 1999 | 13 | 0 |
| 2000 | 11 | 0 |
| 2001 | 15 | 6 |
| 2002 | 12 | 9 |
| 2003 | 9 | 4 |
| 2004 | 3 | 3 |
| 2005 | 1 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 3 |
| 2009 | 1 | 1 |
| 2010 | 1 | 1 |
| 2011 | 3 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 2 | 2 |
| 2023 | 2 | 6 |
| 2024 | 3 | 3 |
| 2025 | 4 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image-forming apparatus generating electrical discharge upstream of transfer portion22 Sep 2026US 12,743,041 B2Canon Kabushiki Kaisha
- Brush having a higher contact pressure with an image bearing member at an upstream end of the brush and image forming apparatus8 Apr 2025US 12,271,140 B2Canon Kabushiki Kaisha
- Image forming apparatus1 Apr 2025US 12,265,354 B2Canon Kabushiki Kaisha
- Charging device, cartridge, and image forming apparatus18 Feb 2025US 12,228,864 B2FUJIFILM Business Innovation Corp.
- Image forming apparatus with brush that collects material adhered to surface of image bearing member and that includes brush portion including threads having specified thread density21 Jan 2025US 12,204,270 B2Canon Kabushiki Kaisha
- Charging device, cartridge, and image forming apparatus8 Aug 2024US 2024/0264548 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus14 Mar 2024US 2024/0085846 A1Canon Kabushiki Kaisha
- Image forming apparatus29 Feb 2024US 2024/0069482 A1Canon Kabushiki Kaisha
- Image forming apparatus26 Oct 2023US 2023/0341807 A1Canon Kabushiki Kaisha
- Image forming apparatus28 Sep 2023US 2023/0305421 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Image forming apparatus including preselected range between charge injection layer and voltage potential120US 6,366,751 B1Ricoh Company, Ltd. · 2002
- Image forming apparatus having a diamond-like structure surface protection layer on a photoconductive layer36US 6,625,409 B2Ricoh Company, Ltd. · 2003
- Image forming apparatus including diamond-like or amorphous structure containing hydrogen surface protection layer35US 6,654,579 B2Ricoh Company, Ltd. · 2003
- Low voltage electrophotography with simultaneous photoreceptor charging, exposure and development31US 4,545,669 AXerox Corporation · 1985
- Charging device including movable charging brush contactable to member to be charged, and image forming apparatus using same26US 5,606,401 ACanon Kabushiki Kaisha · 1997