G03G 15/0806
On a donor element
Official title: {on a donor element, e.g. belt, roller (complete developer unit G03G15/0896)}
G03G15/0806 (On a donor element) appears on 3,620 US grants and 3,217 published applications in this corpus.
Search patents in G03G- Granted patents
- 3,620
- Published applications
- 3,217
- Assignees
- 231
- Inventors
- 4,218
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 9 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 11 | 0 |
| 1982 | 6 | 0 |
| 1983 | 9 | 0 |
| 1984 | 7 | 0 |
| 1985 | 16 | 0 |
| 1986 | 14 | 0 |
| 1987 | 15 | 0 |
| 1988 | 15 | 0 |
| 1989 | 21 | 0 |
| 1990 | 21 | 0 |
| 1991 | 38 | 0 |
| 1992 | 38 | 0 |
| 1993 | 42 | 0 |
| 1994 | 35 | 0 |
| 1995 | 44 | 0 |
| 1996 | 49 | 0 |
| 1997 | 62 | 0 |
| 1998 | 80 | 0 |
| 1999 | 72 | 0 |
| 2000 | 67 | 0 |
| 2001 | 81 | 23 |
| 2002 | 76 | 61 |
| 2003 | 51 | 63 |
| 2004 | 54 | 58 |
| 2005 | 46 | 95 |
| 2006 | 60 | 99 |
| 2007 | 68 | 141 |
| 2008 | 62 | 153 |
| 2009 | 69 | 200 |
| 2010 | 113 | 151 |
| 2011 | 194 | 156 |
| 2012 | 159 | 144 |
| 2013 | 159 | 179 |
| 2014 | 175 | 141 |
| 2015 | 202 | 192 |
| 2016 | 179 | 121 |
| 2017 | 119 | 141 |
| 2018 | 134 | 140 |
| 2019 | 162 | 149 |
| 2020 | 193 | 190 |
| 2021 | 138 | 119 |
| 2022 | 112 | 111 |
| 2023 | 97 | 94 |
| 2024 | 89 | 98 |
| 2025 | 83 | 112 |
| 2026 | 54 | 86 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03G 15/0812Characterised by the developer regulating means981
- G03G 15/0818Characterised by the structure of the donor member956
- G03G 15/0808Characterised by the developer supplying means940
- G03G 15/0813Characterised by means in the developing zone having an interaction with the332
- G03G 15/0817Characterised by the lateral sealing at both sides of the donor member302
- G03G 15/0815Characterised by the developer handling means after the developing zone and before213
- G03G 15/081Characterised by the developer handling means after the supply and before the159
Recent patents
- Developing cartridge6 Oct 2026US 12,754,494 B2Brother Kogyo Kabushiki Kaisha
- Roller driving apparatus used in image forming apparatus29 Sep 2026US 12,748,363 B2Canon Kabushiki Kaisha
- Developing device including spiral blade for conveying developer while rotating and image forming apparatus22 Sep 2026US 12,743,039 B2KYOCERA Document Solutions Inc.
- Image-forming apparatus configured to move movable gear to mesh with first gear before receiving print command22 Sep 2026US 12,743,044 B2Brother Kogyo Kabushiki Kaisha
- Image forming apparatus22 Sep 2026US 12,743,048 B2Canon Kabushiki Kaisha
- Sleeve, developer carrying member, and developing device8 Oct 2026US 2026/0310116 A1Canon Kabushiki Kaisha
- Developing device and image forming apparatus1 Oct 2026US 2026/0299460 A1FUJIFILM Business Innovation Corp.
- Developing device and image forming apparatus1 Oct 2026US 2026/0299461 A1FUJIFILM Business Innovation Corp.
- Developing cartridge including holder holding electrical contact surface and supported by gear cover1 Oct 2026US 2026/0299463 A1Brother Kogyo Kabushiki Kaisha
- Two-component developer, developer set, developing device, and image forming apparatus24 Sep 2026US 2026/0288027 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Space securing member, developing device, charging device and process cartridge201US 6,385,416 B1Canon Kabushiki Kaisha · 2002
- Electrophotographic image forming apparatus to which a process cartridge is detachably mountable and process cartridge having a supporting member for rotatably supporting a developing roller at a position away from the center of rotation thereof155US 6,577,831 B1Canon Kabushiki Kaisha · 2003
- Scavengeless development apparatus for use in highlight color imaging142US 4,868,600 AXerox Corporation · 1989
- Process unit, photosensitive member cartridge, developer cartridge, and image forming apparatus142US 6,041,203 ABrother Kogyo Kabushiki Kaisha · 2000
- Image forming apparatus and developing device with improved self toner density control118US 6,337,957 B12002