G03G 2215/0838
Circulation of developer in a closed loop within the sump of the
Official title: Circulation of developer in a closed loop within the sump of the developing device
G03G2215/0838 (Circulation of developer in a closed loop within the sump of the) appears on 198 US grants and 222 published applications in this corpus.
Search patents in G03G- Granted patents
- 198
- Published applications
- 222
- Assignees
- 31
- Inventors
- 377
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 2 |
| 2005 | 3 | 5 |
| 2006 | 1 | 6 |
| 2007 | 6 | 20 |
| 2008 | 4 | 18 |
| 2009 | 9 | 32 |
| 2010 | 17 | 25 |
| 2011 | 26 | 20 |
| 2012 | 29 | 20 |
| 2013 | 15 | 6 |
| 2014 | 23 | 10 |
| 2015 | 11 | 6 |
| 2016 | 6 | 6 |
| 2017 | 11 | 14 |
| 2018 | 4 | 5 |
| 2019 | 6 | 1 |
| 2020 | 4 | 3 |
| 2021 | 3 | 3 |
| 2022 | 5 | 8 |
| 2023 | 2 | 1 |
| 2024 | 2 | 2 |
| 2025 | 3 | 6 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Development device and image forming device that prevents toner leakage14 Jul 2026US 12,681,409 B2Sharp Kabushiki Kaisha
- Image forming apparatus with gas flowing from developing device to supply device through developer channel19 May 2026US 12,631,988 B2FUJIFILM Business Innovation Corp.
- Developing device and image forming apparatus19 May 2026US 12,631,989 B2KYOCERA Document Solutions Inc.
- Developing device with structure to regulate discharging amount of developer2 Dec 2025US 12,487,551 B2Hewlett-Packard Development Company, L. P.
- Mixing printing fluid20 May 2025US 12,306,558 B2Hewlett-Packard Development Company, L. P.
- Developing device and image forming apparatus9 Jul 2026US 2026/0194838 A1FUJIFILM Business Innovation Corp.
- Developing device and image forming apparatus including the same16 Apr 2026US 2026/0104658 A1KYOCERA Document Solutions Inc.
- Image forming apparatus4 Dec 2025US 2025/0370379 A1FUJIFILM Business Innovation Corp.
- Development device and image forming apparatus therewith9 Oct 2025US 2025/0314990 A1KYOCERA Document Solutions Inc.
- Development device and image forming apparatus provided therewith9 Oct 2025US 2025/0314993 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Developer supply container and electrophotographic image forming apparatus117US 7,174,122 B2Canon Kabushiki Kaisha · 2007
- Developer supply container and electrophotographic image forming apparatus115US 6,968,146 B1Canon Kabushiki Kaisha · 2005
- Developer supply container and electrophotographic image forming apparatus113US 7,366,452 B2Canon Kabushiki Kaisha · 2008
- Developing apparatus, process cartridge and image forming apparatus20US 6,324,369 B1Canon Kabushiki Kaisha · 2001
- Developing device and toner cartridge20US 7,672,621 B2Brother Kogyo Kabushiki Kaisha · 2010