G03G 2215/026
By coronas
Official title: by coronas
G03G2215/026 (By coronas) appears on 253 US grants and 256 published applications in this corpus.
Search patents in G03G- Granted patents
- 253
- Published applications
- 256
- Assignees
- 52
- Inventors
- 508
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 4 | 8 |
| 2005 | 8 | 19 |
| 2006 | 18 | 23 |
| 2007 | 16 | 27 |
| 2008 | 15 | 29 |
| 2009 | 12 | 29 |
| 2010 | 30 | 33 |
| 2011 | 22 | 23 |
| 2012 | 24 | 10 |
| 2013 | 19 | 12 |
| 2014 | 23 | 5 |
| 2015 | 9 | 1 |
| 2016 | 3 | 6 |
| 2017 | 5 | 1 |
| 2018 | 4 | 5 |
| 2019 | 5 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 4 |
| 2025 | 4 | 3 |
| 2026 | 1 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrophotographic roller, process cartridge, electrophotographic image forming apparatus, and method for manufacturing electrophotographic roller11 Aug 2026US 12,704,799 B2Canon Kabushiki Kaisha
- Movable member and image forming apparatus19 Aug 2025US 12,393,134 B2Canon Kabushiki Kaisha
- Image forming apparatus controlling voltage applied to electrodes of charging devices6 May 2025US 12,292,698 B2Canon Kabushiki Kaisha
- Image forming apparatus22 Apr 2025US 12,282,266 B2KYOCERA Document Solutions Inc.
- Image forming apparatus having controller to control voltage to first and second corona chargers1 Apr 2025US 12,265,338 B2Canon Kabushiki Kaisha
- Charging device and image forming apparatus1 Oct 2026US 2026/0299455 A1FUJIFILM Business Innovation Corp.
- Charging device and image forming apparatus1 Oct 2026US 2026/0299456 A1FUJIFILM Business Innovation Corp.
- Charging device and image forming apparatus1 Oct 2026US 2026/0299458 A1FUJIFILM Business Innovation Corp.
- Cleaning apparatus and image forming apparatus27 Aug 2026US 2026/0251995 A1KYOCERA Document Solutions Inc.
- Charger12 Mar 2026US 2026/0072372 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Pin corotron and scorotron assembly23US 4,725,732 AXerox Corporation · 1988
- Nano-structure coated coronodes for low voltage charging devices21US 7,397,032 B2Xeorox Corporation · 2008
- Process cartridge having charging device with conductive grid electrode21US 7,813,677 B2Brother Kogyo Kabushiki Kaisha · 2010
- Charging unit19US 5,666,605 AKonica Corporation · 1997
- Charging device for a process cartridge and an image forming apparatus18US 7,463,850 B2Brother Kogyo Kabushiki Kaisha · 2008