G03G 15/0818
Characterised by the structure of the donor member
Official title: {characterised by the structure of the donor member, e.g. surface properties}
G03G15/0818 (Characterised by the structure of the donor member) appears on 956 US grants and 836 published applications in this corpus.
Search patents in G03G- Granted patents
- 956
- Published applications
- 836
- Assignees
- 107
- Inventors
- 1,597
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 14 | 0 |
| 1994 | 7 | 0 |
| 1995 | 19 | 0 |
| 1996 | 22 | 0 |
| 1997 | 23 | 0 |
| 1998 | 33 | 0 |
| 1999 | 23 | 0 |
| 2000 | 29 | 0 |
| 2001 | 24 | 5 |
| 2002 | 26 | 24 |
| 2003 | 14 | 12 |
| 2004 | 9 | 6 |
| 2005 | 7 | 16 |
| 2006 | 9 | 27 |
| 2007 | 11 | 33 |
| 2008 | 10 | 49 |
| 2009 | 15 | 68 |
| 2010 | 25 | 48 |
| 2011 | 77 | 41 |
| 2012 | 41 | 37 |
| 2013 | 46 | 49 |
| 2014 | 52 | 41 |
| 2015 | 53 | 65 |
| 2016 | 41 | 33 |
| 2017 | 35 | 41 |
| 2018 | 36 | 26 |
| 2019 | 33 | 29 |
| 2020 | 39 | 45 |
| 2021 | 26 | 17 |
| 2022 | 19 | 26 |
| 2023 | 22 | 21 |
| 2024 | 19 | 26 |
| 2025 | 22 | 25 |
| 2026 | 14 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrophotographic conductive roller, process cartridge, and electrophotographic image forming apparatus15 Sep 2026US 12,736,893 B2Canon Kabushiki Kaisha
- Developing device18 Aug 2026US 12,710,706 B2Canon Kabushiki Kaisha
- Electrophotographic roller, process cartridge, electrophotographic image forming apparatus, and method for manufacturing electrophotographic roller11 Aug 2026US 12,704,799 B2Canon Kabushiki Kaisha
- Electrophotographic member, process cartridge, and electrophotographic image forming apparatus21 Jul 2026US 12,687,798 B2Canon Kabushiki Kaisha
- Process cartridge21 Jul 2026US 12,687,799 B2Canon Kabushiki Kaisha
- Sleeve, developer carrying member, and developing device8 Oct 2026US 2026/0310116 A1Canon Kabushiki Kaisha
- Two-component developer, developing device, and image forming apparatus24 Sep 2026US 2026/0288032 A1KYOCERA Document Solutions Inc.
- Developing apparatus24 Sep 2026US 2026/0288035 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
Most cited
By later US patents
- Developing device with a developer carrier capable of forming numerous microfields thereon66US 5,339,141 ARicoh Company, Ltd. · 1994
- Electroded donor roll for a scavengeless developer unit58US 5,172,170 AXerox Corporation · 1992
- Developing device using single component toner56US 4,760,422 ARicoh Company, Ltd. · 1988
- Developing member and electrophotographic image forming apparatus55US 7,799,398 B2Canon Kabushiki Kaisha · 2010
- Development system coatings53US 5,300,339 AXerox Corporation · 1994