G03G 2221/1693
For charging
Official title: for charging
G03G2221/1693 (For charging) appears on 85 US grants and 31 published applications in this corpus.
Search patents in G03G- Granted patents
- 85
- Published applications
- 31
- Assignees
- 31
- Inventors
- 228
- Latest grant
- 6 Aug 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 3 |
| 2003 | 4 | 1 |
| 2004 | 2 | 0 |
| 2005 | 1 | 3 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 3 | 5 |
| 2009 | 2 | 2 |
| 2010 | 4 | 2 |
| 2011 | 3 | 2 |
| 2012 | 3 | 0 |
| 2013 | 0 | 2 |
| 2014 | 2 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Conductive member, charging device, process cartridge, and image forming apparatus having surface layer with sea/island structure6 Aug 2024US 12,055,868 B2FUJIFILM Business Innovation Corp.
- Image forming apparatus1 Nov 2022US 11,487,213 B2Canon Kabushiki Kaisha
- Image forming apparatus with corona charger cleaning19 Sep 2017US 9,766,569 B2Canon Kabushiki Kaisha
- Image forming apparatus14 Apr 2015US 9,008,545 B2Seiko I Infotech Inc.
- Charging device, image forming structure, and image forming apparatus30 Sep 2014US 8,849,150 B2Fuji Xerox Co., Ltd.
- Image forming apparatus10 Sep 2026US 2026/0267282 A1Canon Kabushiki Kaisha
- Cleaning apparatus and image forming apparatus27 Aug 2026US 2026/0251995 A1KYOCERA Document Solutions Inc.
- Charger12 Mar 2026US 2026/0072372 A1FUJIFILM Business Innovation Corp.
- Conductive member, charging device, process cartridge, and image forming apparatus28 Mar 2024US 2024/0103393 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus21 Apr 2022US 2022/0121135 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Image forming apparatus rotationally driving image bearing member and contact electrifying member of process cartridge and process cartridge comprising image bearing member and contact electrifying member120US 6,714,746 B2Canon Kabushiki Kaisha · 2004
- Copier with retractable charging unit to prevent damage to drum when removing process cartridge104US 5,095,335 ACanon Kabushiki Kaisha · 1992
- Contaminant preventing structure for image forming apparatus and process cartridge65US 6,385,414 B1Brother Kogyo Kabushiki Kaisha · 2002
- Corona discharger system60US 4,627,701 ACanon Kabushiki Kaisha · 1986
- Image forming apparatus and process cartridge detachable thereto with charging member pressure contact release feature60US 5,465,136 ACanon Kabushiki Kaisha · 1995