G03G 15/0921
Details concerning the magnetic brush roller structure
Official title: {Details concerning the magnetic brush roller structure, e.g. magnet configuration}
G03G15/0921 (Details concerning the magnetic brush roller structure) appears on 860 US grants and 570 published applications in this corpus.
Search patents in G03G- Granted patents
- 860
- Published applications
- 570
- Assignees
- 124
- Inventors
- 1,492
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 11 | 0 |
| 1982 | 10 | 0 |
| 1983 | 7 | 0 |
| 1984 | 7 | 0 |
| 1985 | 11 | 0 |
| 1986 | 9 | 0 |
| 1987 | 20 | 0 |
| 1988 | 7 | 0 |
| 1989 | 18 | 0 |
| 1990 | 13 | 0 |
| 1991 | 16 | 0 |
| 1992 | 14 | 0 |
| 1993 | 19 | 0 |
| 1994 | 16 | 0 |
| 1995 | 12 | 0 |
| 1996 | 30 | 0 |
| 1997 | 18 | 0 |
| 1998 | 28 | 0 |
| 1999 | 26 | 0 |
| 2000 | 26 | 0 |
| 2001 | 11 | 10 |
| 2002 | 23 | 21 |
| 2003 | 14 | 19 |
| 2004 | 20 | 22 |
| 2005 | 18 | 17 |
| 2006 | 12 | 19 |
| 2007 | 18 | 23 |
| 2008 | 14 | 32 |
| 2009 | 15 | 28 |
| 2010 | 24 | 17 |
| 2011 | 24 | 30 |
| 2012 | 21 | 17 |
| 2013 | 23 | 29 |
| 2014 | 29 | 20 |
| 2015 | 36 | 39 |
| 2016 | 35 | 21 |
| 2017 | 15 | 35 |
| 2018 | 29 | 25 |
| 2019 | 32 | 20 |
| 2020 | 21 | 21 |
| 2021 | 14 | 18 |
| 2022 | 18 | 14 |
| 2023 | 14 | 15 |
| 2024 | 13 | 14 |
| 2025 | 9 | 22 |
| 2026 | 8 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Magnet roller, developing roller, and image forming apparatus1 Sep 2026US 12,724,363 B2KYOCERA Document Solutions Inc.
- Developing device18 Aug 2026US 12,710,706 B2Canon Kabushiki Kaisha
- Developing device18 Aug 2026US 12,710,710 B2Canon Kabushiki Kaisha
- Magnet including a non-rotatable shaft engaged with a through hole at a lateral end21 Jul 2026US 12,687,800 B2Ricoh Company, Ltd.
- Development apparatus19 May 2026US 12,631,990 B2Canon Kabushiki Kaisha
- Image forming apparatus24 Sep 2026US 2026/0288036 A1KYOCERA Document Solutions Inc.
- Developing device and image forming apparatus17 Sep 2026US 2026/0277137 A1Ricoh Company, Ltd.
- Development apparatus3 Sep 2026US 2026/0259521 A1Canon Kabushiki Kaisha
- Developer carrying member and method for manufacturing the same27 Aug 2026US 2026/0252001 A1KYOCERA Document Solutions Inc.
- Discharge method, development device, and image forming apparatus16 Jul 2026US 2026/0202778 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Developing apparatus with drive mechanism for developer bearing body183US 6,173,145 B2Canon Kabushiki Kaisha · 2001
- Electrode member, developing apparatus, process cartridge and image forming apparatus161US 5,768,658 ACanon Kabushiki Kaisha · 1998
- Cylindrical member and engagement member assembly108US 5,991,571 ACanon Kabushiki Kaisha · 1999
- Process cartridge with rotary member having bearing attachment portions of different diameters, and method for refusing such a rotary member101US 5,528,341 ACanon Kabushiki Kaisha · 1996
- Cylindrical structure, process cartridge, and image forming apparatus81US 5,907,750 ACanon Kabushiki Kaisha · 1999