G03G 15/0258
Provided with means for the maintenance of the charging apparatus
Official title: {provided with means for the maintenance of the charging apparatus, e.g. cleaning devices, ozone removing devices G03G15/0225, G03G15/0291 takes precedence}
G03G15/0258 (Provided with means for the maintenance of the charging apparatus) appears on 362 US grants and 277 published applications in this corpus.
Search patents in G03G- Granted patents
- 362
- Published applications
- 277
- Assignees
- 67
- Inventors
- 737
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 2 |
| 2002 | 7 | 3 |
| 2003 | 3 | 5 |
| 2004 | 5 | 4 |
| 2005 | 7 | 13 |
| 2006 | 6 | 15 |
| 2007 | 12 | 18 |
| 2008 | 8 | 17 |
| 2009 | 10 | 11 |
| 2010 | 21 | 15 |
| 2011 | 8 | 14 |
| 2012 | 13 | 11 |
| 2013 | 14 | 17 |
| 2014 | 22 | 11 |
| 2015 | 10 | 4 |
| 2016 | 7 | 8 |
| 2017 | 16 | 23 |
| 2018 | 17 | 16 |
| 2019 | 17 | 13 |
| 2020 | 15 | 8 |
| 2021 | 7 | 10 |
| 2022 | 7 | 10 |
| 2023 | 6 | 6 |
| 2024 | 6 | 14 |
| 2025 | 12 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Charging device, toner-image forming unit, and image forming apparatus1 Sep 2026US 12,724,359 B2FUJIFILM Business Innovation Corp.
- Image forming apparatus including cleaning rod30 Jun 2026US 12,669,763 B2Canon Kabushiki Kaisha
- Process cartridge and process cartridge set30 Dec 2025US 12,510,839 B2Canon Kabushiki Kaisha
- Image forming apparatus with ozone removal16 Dec 2025US 12,498,647 B2Toshiba Tec Kabushiki Kaisha
- Image forming apparatus having service summons control and corresponding method21 Oct 2025US 12,449,751 B2Toshiba Tec Kabushiki Kaisha
- Image forming apparatus8 Oct 2026US 2026/0310115 A1Canon Kabushiki Kaisha
- Image forming apparatus18 Jun 2026US 2026/0169418 A1KYOCERA Document Solutions Inc.
- Image forming system5 Mar 2026US 2026/0064026 A1FUJIFILM Business Innovation Corp.
- Optical scanning device and image forming apparatus including same25 Dec 2025US 2025/0390036 A1KYOCERA Document Solutions Inc.
- Charging device, image forming unit, and image forming apparatus2 Oct 2025US 2025/0306497 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Ozone collection and filtration system102US 4,388,274 AXerox Corporation · 1983
- Charging device having a plate electrode and a cleaning device for cleaning edges of the plate electrode51US 5,532,798 AMinolta Camera Kabushiki Kaisha · 1996
- Cleaning device for wire electrode of corona discharger49US 5,012,093 AMinolta Camera Kabushiki Kaisha · 1991
- Corona generating device30US 4,646,196 AXerox Corporation · 1987
- Image forming apparatus incorporating therein ozone filtering mechanism28US 4,401,385 ACanon Kabushiki Kaisha · 1983