G03G 2221/1892
Presence detection
G03G2221/1892 (Presence detection) appears on 119 US grants and 92 published applications in this corpus.
Search patents in G03G- Granted patents
- 119
- Published applications
- 92
- Assignees
- 31
- Inventors
- 173
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 0 |
| 2005 | 1 | 6 |
| 2006 | 4 | 15 |
| 2007 | 5 | 7 |
| 2008 | 8 | 5 |
| 2009 | 11 | 3 |
| 2010 | 4 | 3 |
| 2011 | 2 | 5 |
| 2012 | 3 | 2 |
| 2013 | 3 | 0 |
| 2014 | 4 | 5 |
| 2015 | 4 | 4 |
| 2016 | 7 | 7 |
| 2017 | 5 | 5 |
| 2018 | 7 | 4 |
| 2019 | 2 | 1 |
| 2020 | 3 | 4 |
| 2021 | 2 | 4 |
| 2022 | 3 | 2 |
| 2023 | 6 | 2 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Developing cartridge for detachable mounting to an imaging device25 Aug 2026US 12,717,274 B2Zhuhai Un-Tern Imaging Products Co., Ltd
- Developing cartridge20 Jan 2026US 12,529,993 B2E-Z Ink Technology Co., Ltd
- Image forming apparatus capable of controlling extension of use of drum cartridge7 Nov 2023US 11,809,128 B2Brother Kogyo Kabushiki Kaisha
- Developing cartridge capable of releasing meshing between gear and rack gear10 Oct 2023US RE49,689 E1Brother Kogyo Kabushiki Kaisha
- Image forming apparatus that controls regulation unit19 Sep 2023US 11,762,329 B2Canon Kabushiki Kaisha
- Image forming apparatus10 Sep 2026US 2026/0267282 A1Canon Kabushiki Kaisha
- Image forming apparatus, method of controlling image forming apparatus, and storage medium26 Mar 2026US 2026/0086475 A1Canon Kabushiki Kaisha
- Developing cartridge13 Mar 2025US 2025/0085663 A1Zhuhai Un-Tern Imaging Products Co., Ltd
- Developing cartridge9 Jan 2025US 2025/0013189 A1E-Z Ink Technology Co., Ltd
- Image forming apparatus capable of detecting attachment state of toner container19 Jan 2023US 2023/0015370 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Process cartridge, method for assembling process cartridge and image forming appararatus167US 5,500,714 ACanon Kabushiki Kaisha · 1996
- Process cartridge, method for assembling process cartridge and image forming apparatus138US 5,543,898 ACanon Kabushiki Kaisha · 1996
- Process cartridge and image forming apparatus having particular arrangement of electrical contacts128US 6,128,452 ACanon Kabushiki Kaisha · 2000
- Electrophotographic image forming apparatus having process cartridge with particular arrangement of electrical contacts113US 6,185,390 B2Canon Kabushiki Kaisha · 2001
- Process cartridge, method for assembling process cartridge and image forming apparatus99US 5,617,579 ACanon Kabushiki Kaisha · 1997