G03G 2215/0609
Magnetic brush
Official title: magnetic brush
G03G2215/0609 (Magnetic brush) appears on 236 US grants and 197 published applications in this corpus.
Search patents in G03G- Granted patents
- 236
- Published applications
- 197
- Assignees
- 48
- Inventors
- 618
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 14 | 0 |
| 1997 | 3 | 0 |
| 1998 | 12 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 0 | 5 |
| 2004 | 4 | 7 |
| 2005 | 6 | 14 |
| 2006 | 12 | 27 |
| 2007 | 12 | 17 |
| 2008 | 10 | 19 |
| 2009 | 17 | 22 |
| 2010 | 19 | 8 |
| 2011 | 16 | 18 |
| 2012 | 13 | 9 |
| 2013 | 14 | 4 |
| 2014 | 7 | 3 |
| 2015 | 4 | 3 |
| 2016 | 5 | 4 |
| 2017 | 4 | 0 |
| 2018 | 1 | 2 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 4 | 4 |
| 2022 | 4 | 4 |
| 2023 | 0 | 2 |
| 2024 | 3 | 3 |
| 2025 | 4 | 6 |
| 2026 | 3 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnet roller, developing roller, and image forming apparatus1 Sep 2026US 12,724,363 B2KYOCERA Document Solutions Inc.
- Developing device18 Aug 2026US 12,710,710 B2Canon Kabushiki Kaisha
- Image forming apparatus5 May 2026US 12,619,172 B2KYOCERA Document Solutions Inc.
- Image forming apparatus18 Nov 2025US 12,474,663 B2KYOCERA Document Solutions Inc.
- Developing device, process cartridge, and image forming apparatus including a holder which has projections within a hole accomodating a developer regulator or a developing roller4 Nov 2025US 12,461,470 B2Ricoh Company, Ltd.
- Image forming apparatus24 Sep 2026US 2026/0288036 A1KYOCERA Document Solutions Inc.
- Developing device and image forming apparatus17 Sep 2026US 2026/0277137 A1Ricoh Company, Ltd.
- Image forming apparatus6 Aug 2026US 2026/0227722 A1KYOCERA Document Solutions Inc.
- Image forming apparatus6 Aug 2026US 2026/0227733 A1KYOCERA Document Solutions Inc.
- Developing apparatus25 Jun 2026US 2026/0177946 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Developing device using a toner and carrier mixture43US 5,771,426 ARicoh Company, Ltd. · 1998
- Developing machine which uses a developing agent including a toner and magnetic particles37US 5,822,664 ARicoh Company, Ltd. · 1998
- Image forming apparatus35US 5,937,228 ARicoh Company, Ltd. · 1999
- Developing device for image forming apparatus31US 5,864,733 ARicoh Company, Ltd. · 1999
- Dry process developing apparatus27US 4,676,192 AMinolta Camera Kabushiki Kaisha · 1987