G03G 15/0881
Sealing of developer cartridges
Official title: {Sealing of developer cartridges}
G03G15/0881 (Sealing of developer cartridges) appears on 1,929 US grants and 1,725 published applications in this corpus.
Search patents in G03G- Granted patents
- 1,929
- Published applications
- 1,725
- Assignees
- 150
- Inventors
- 1,813
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 10 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 16 | 0 |
| 1991 | 14 | 0 |
| 1992 | 18 | 0 |
| 1993 | 20 | 0 |
| 1994 | 18 | 0 |
| 1995 | 17 | 0 |
| 1996 | 24 | 0 |
| 1997 | 26 | 0 |
| 1998 | 38 | 0 |
| 1999 | 24 | 0 |
| 2000 | 29 | 0 |
| 2001 | 28 | 7 |
| 2002 | 22 | 25 |
| 2003 | 29 | 27 |
| 2004 | 20 | 41 |
| 2005 | 27 | 45 |
| 2006 | 32 | 47 |
| 2007 | 43 | 72 |
| 2008 | 42 | 70 |
| 2009 | 54 | 78 |
| 2010 | 83 | 73 |
| 2011 | 65 | 81 |
| 2012 | 93 | 77 |
| 2013 | 77 | 90 |
| 2014 | 105 | 95 |
| 2015 | 105 | 69 |
| 2016 | 120 | 82 |
| 2017 | 66 | 95 |
| 2018 | 95 | 76 |
| 2019 | 71 | 70 |
| 2020 | 81 | 74 |
| 2021 | 64 | 95 |
| 2022 | 78 | 70 |
| 2023 | 78 | 71 |
| 2024 | 65 | 78 |
| 2025 | 68 | 68 |
| 2026 | 31 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Toner cartridge and image forming apparatus22 Sep 2026US 12,743,040 B2Canon Kabushiki Kaisha
- Toner container and image forming system15 Sep 2026US 12,736,897 B2Canon Kabushiki Kaisha
- Toner seal member and toner cartridge15 Sep 2026US 12,736,899 B2Inoac Corporation
- 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.
- Developer container and image forming system for accommodating powder or liquid contents18 Aug 2026US 12,710,708 B2Canon Kabushiki Kaisha
- Developer accommodating container and image forming apparatus1 Oct 2026US 2026/0299464 A1Canon Kabushiki Kaisha
- Toner storage container17 Sep 2026US 2026/0277132 A1KYOCERA Document Solutions Inc.
- Sheet-shaped sealing member, removable unit, and image forming apparatus17 Sep 2026US 2026/0277133 A1Ricoh Company, Ltd.
- Developer accommodating device, developing device, cartridge and image forming apparatus17 Sep 2026US 2026/0277134 A1Canon Kabushiki Kaisha
- Image formation unit, image formation apparatus, and developer cartridge27 Aug 2026US 2026/0251998 A1Oki Electric Industry Co., Ltd.
Most cited
By later US patents
- Toner container, toner container assembling method, process cartridge, and electrophotographic image forming apparatus173US 5,878,309 ACanon Kabushiki Kaisha · 1999
- Process cartridge, method for assembling process cartridge and image forming appararatus167US 5,500,714 ACanon Kabushiki Kaisha · 1996
- Developing cartridge157US 6,072,969 ACanon Kabushiki Kaisha · 2000
- Toner replenishing container and toner replenishing apparatus147US 6,292,644 B1Canon Kabushiki Kaisha · 2001
- Process cartridge, method for assembling process cartridge and image forming apparatus138US 5,543,898 ACanon Kabushiki Kaisha · 1996