G03G 21/12
Toner waste containers
G03G21/12 (Toner waste containers) appears on 951 US grants and 896 published applications in this corpus.
Search patents in G03G- Granted patents
- 951
- Published applications
- 896
- Assignees
- 87
- Inventors
- 1,475
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 12 | 0 |
| 1992 | 8 | 0 |
| 1993 | 9 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 13 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 12 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 2 |
| 2002 | 10 | 7 |
| 2003 | 9 | 13 |
| 2004 | 7 | 12 |
| 2005 | 9 | 27 |
| 2006 | 20 | 24 |
| 2007 | 23 | 29 |
| 2008 | 18 | 44 |
| 2009 | 30 | 42 |
| 2010 | 22 | 51 |
| 2011 | 41 | 47 |
| 2012 | 51 | 38 |
| 2013 | 50 | 34 |
| 2014 | 47 | 42 |
| 2015 | 59 | 45 |
| 2016 | 55 | 46 |
| 2017 | 40 | 44 |
| 2018 | 42 | 42 |
| 2019 | 49 | 45 |
| 2020 | 47 | 43 |
| 2021 | 42 | 50 |
| 2022 | 44 | 39 |
| 2023 | 32 | 38 |
| 2024 | 28 | 32 |
| 2025 | 24 | 33 |
| 2026 | 21 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cartridge, toner cartridge, and image forming apparatus29 Sep 2026US 12,748,375 B2Canon Kabushiki Kaisha
- Developing device including spiral blade for conveying developer while rotating and image forming apparatus22 Sep 2026US 12,743,039 B2KYOCERA Document Solutions Inc.
- Printer apparatus with upstream toner recycling function15 Sep 2026US 12,736,895 B2Avision Inc.
- Image forming apparatus1 Sep 2026US 12,724,361 B2KYOCERA Document Solutions Inc.
- Toner container capable of facilitating cleaning task before reuse, image forming apparatus, and manufacturing method of toner container1 Sep 2026US 12,724,379 B2KYOCERA Document Solutions Inc.
- Method of cleaning developing agent stuck to image carrier in image forming apparatus24 Sep 2026US 2026/0288057 A1Canon Kabushiki Kaisha
- Image forming system24 Sep 2026US 2026/0288059 A1FUJIFILM Business Innovation Corp.
- Image forming system24 Sep 2026US 2026/0288061 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus20 Aug 2026US 2026/0244151 A1Etria Co., Ltd.
- Booklet manufacturing apparatus and image forming system20 Aug 2026US 2026/0244152 A1
Most cited
By later US patents
- Capacitive sensor168US 5,465,619 AXerox Corporation · 1995
- Process cartridge and electrophotographic image forming apparatus149US 7,139,502 B2Canon Kabushiki Kaisha · 2006
- Electrophotographic apparatus having plural image forming modes, and a process cartridge applied to such electrophotographic apparatus104US 6,157,792 ACanon Kabushiki Kaisha · 2000
- Cleaning frame, cleaning device, process cartridge and electrophotographic image forming apparatus with segregated waste toner container89US 6,055,406 ACanon Kabushiki Kaisha · 2000
- Toner storage unit86US 5,842,093 AKYOCERA Corporation · 1998