G03G 2215/0858
Donor member
G03G2215/0858 (Donor member) appears on 243 US grants and 162 published applications in this corpus.
Search patents in G03G- Granted patents
- 243
- Published applications
- 162
- Assignees
- 62
- Inventors
- 586
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 11 | 0 |
| 1998 | 15 | 0 |
| 1999 | 18 | 0 |
| 2000 | 18 | 0 |
| 2001 | 23 | 5 |
| 2002 | 24 | 18 |
| 2003 | 7 | 10 |
| 2004 | 7 | 3 |
| 2005 | 3 | 10 |
| 2006 | 6 | 10 |
| 2007 | 6 | 7 |
| 2008 | 4 | 11 |
| 2009 | 6 | 21 |
| 2010 | 6 | 4 |
| 2011 | 13 | 6 |
| 2012 | 7 | 1 |
| 2013 | 7 | 3 |
| 2014 | 2 | 2 |
| 2015 | 3 | 4 |
| 2016 | 5 | 1 |
| 2017 | 0 | 3 |
| 2018 | 4 | 4 |
| 2019 | 3 | 4 |
| 2020 | 10 | 10 |
| 2021 | 6 | 4 |
| 2022 | 4 | 4 |
| 2023 | 2 | 0 |
| 2024 | 2 | 6 |
| 2025 | 5 | 4 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Magnet roller, developing roller, and image forming apparatus1 Sep 2026US 12,724,363 B2KYOCERA Document Solutions Inc.
- Electrophotographic roller, process cartridge, electrophotographic image forming apparatus, and method for manufacturing electrophotographic roller11 Aug 2026US 12,704,799 B2Canon Kabushiki Kaisha
- Developing device12 Aug 2025US 12,386,284 B2KYOCERA Document Solutions Inc.
- Electrophotographic member, process cartridge, and electrophotographic image forming apparatus22 Jul 2025US 12,366,816 B2Canon Kabushiki Kaisha
- Developing sleeve and electrophotographic image forming apparatus10 Jun 2025US 12,326,672 B2Konica Minolta, Inc.
- Sleeve, developer carrying member, and developing device8 Oct 2026US 2026/0310116 A1Canon Kabushiki Kaisha
- Development roll for electrophotographic equipment17 Sep 2026US 2026/0277130 A1Sumitomo Riko Company Limited
- Electrophotographic member, developing apparatus, electrophotographic process cartridge, and electrophotographic image forming apparatus10 Sep 2026US 2026/0267258 A1Canon Kabushiki Kaisha
- Developer carrying member and method for manufacturing the same27 Aug 2026US 2026/0252001 A1KYOCERA Document Solutions Inc.
- Developer carrying member and manufacturing method thereof12 Mar 2026US 2026/0072375 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Developing device with microfields formed on developer carrier50US 5,424,814 ARicoh Company, Ltd. · 1995
- Developing device for an image forming apparatus50US 5,489,747 ARicoh Company, Ltd. · 1996
- Toner conveyor roller and image forming apparatus having the same49US 5,617,191 ARicoh Company, Ltd. · 1997
- Developing apparatus having a toner supporting roller with an inner layer and surface layer36US 5,627,630 ARicoh Company, Ltd. · 1997
- Method of coating a toner conveyor roller35US 5,879,752 ARicoh Company, Ltd. · 1999