G03G 2215/0894
Through a light transmissive window in the developer container wall
Official title: through a light transmissive window in the developer container wall
G03G2215/0894 (Through a light transmissive window in the developer container wall) appears on 140 US grants and 93 published applications in this corpus.
Search patents in G03G- Granted patents
- 140
- Published applications
- 93
- Assignees
- 33
- Inventors
- 234
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 11 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 2 |
| 2003 | 3 | 1 |
| 2004 | 0 | 2 |
| 2005 | 2 | 4 |
| 2006 | 4 | 8 |
| 2007 | 3 | 4 |
| 2008 | 4 | 9 |
| 2009 | 3 | 7 |
| 2010 | 4 | 4 |
| 2011 | 7 | 6 |
| 2012 | 8 | 5 |
| 2013 | 4 | 2 |
| 2014 | 8 | 8 |
| 2015 | 8 | 1 |
| 2016 | 3 | 4 |
| 2017 | 8 | 7 |
| 2018 | 2 | 2 |
| 2019 | 6 | 4 |
| 2020 | 0 | 1 |
| 2021 | 4 | 4 |
| 2022 | 2 | 3 |
| 2023 | 2 | 0 |
| 2024 | 2 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Image forming apparatus having detection of stored toner amount18 Nov 2025US 12,474,652 B2Canon Kabushiki Kaisha
- Cleaning member and elastic member24 Dec 2024US 12,174,576 B2Canon Kabushiki Kaisha
- Image forming apparatus having detection of residual toner amount2 Jan 2024US 11,860,556 B2Canon Kabushiki Kaisha
- Image forming apparatus having an abnormality detection mode12 Dec 2023US 11,841,639 B2Canon Kabushiki Kaisha
- Toner conveying apparatus having a light transmission portion3 Oct 2023US 11,774,879 B2Canon Kabushiki Kaisha
- Cleaning device and image forming apparatus28 Aug 2025US 2025/0271805 A1KYOCERA Document Solutions Inc.
- Cleaning member and elastic member4 Apr 2024US 2024/0111241 A1Canon Kabushiki Kaisha
- Image forming apparatus14 Mar 2024US 2024/0085822 A1Canon Kabushiki Kaisha
- Image forming apparatus1 Dec 2022US 2022/0382184 A1Canon Kabushiki Kaisha
- Image forming apparatus30 Jun 2022US 2022/0206410 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method184US 7,224,925 B2Canon Kabushiki Kaisha · 2007
- Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method169US 7,349,657 B2Canon Kabushiki Kaisha · 2008
- Developing cartridge157US 6,072,969 ACanon Kabushiki Kaisha · 2000
- Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method102US 7,412,193 B2Canon Kabushiki Kaisha · 2008
- Shutter, developing cartridge and electrophotographic image forming apparatus88US 6,032,002 ACanon Kabushiki Kaisha · 2000