G03G 21/0005
Arrangements not provided for by groups g03g13/00 - g03g19/00: for removing solid
Official title: {for removing solid developer or debris from the electrographic recording medium}
G03G21/0005 (Arrangements not provided for by groups g03g13/00 - g03g19/00: for removing solid) appears on 2,805 US grants and 2,247 published applications in this corpus.
Search patents in G03G- Granted patents
- 2,805
- Published applications
- 2,247
- Assignees
- 194
- Inventors
- 3,932
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 10 | 0 |
| 1978 | 18 | 0 |
| 1979 | 12 | 0 |
| 1980 | 20 | 0 |
| 1981 | 24 | 0 |
| 1982 | 20 | 0 |
| 1983 | 19 | 0 |
| 1984 | 31 | 0 |
| 1985 | 32 | 0 |
| 1986 | 24 | 0 |
| 1987 | 33 | 0 |
| 1988 | 22 | 0 |
| 1989 | 35 | 0 |
| 1990 | 36 | 0 |
| 1991 | 44 | 0 |
| 1992 | 40 | 0 |
| 1993 | 49 | 0 |
| 1994 | 49 | 0 |
| 1995 | 48 | 0 |
| 1996 | 41 | 0 |
| 1997 | 47 | 0 |
| 1998 | 56 | 0 |
| 1999 | 45 | 0 |
| 2000 | 44 | 0 |
| 2001 | 39 | 13 |
| 2002 | 37 | 49 |
| 2003 | 41 | 80 |
| 2004 | 57 | 56 |
| 2005 | 38 | 81 |
| 2006 | 59 | 86 |
| 2007 | 69 | 104 |
| 2008 | 66 | 95 |
| 2009 | 52 | 93 |
| 2010 | 89 | 110 |
| 2011 | 98 | 104 |
| 2012 | 79 | 92 |
| 2013 | 98 | 90 |
| 2014 | 102 | 112 |
| 2015 | 153 | 100 |
| 2016 | 119 | 107 |
| 2017 | 77 | 108 |
| 2018 | 111 | 125 |
| 2019 | 133 | 96 |
| 2020 | 89 | 101 |
| 2021 | 88 | 73 |
| 2022 | 68 | 72 |
| 2023 | 54 | 79 |
| 2024 | 73 | 86 |
| 2025 | 62 | 81 |
| 2026 | 40 | 54 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03G 21/0011Using a blade1,207
- G03G 21/0035Using a brush436
- G03G 21/007Arrangement or disposition of parts of the cleaning unit390
- G03G 21/0064Using the developing unit332
- G03G 21/0058Using a roller or a polygonal rotating cleaning member265
- G03G 21/0047Using electrostatic or magnetic means181
- G03G 21/0041Using a band72
- G03G 21/0052Using an air flow68
Recent patents
- Image-forming apparatus generating electrical discharge upstream of transfer portion22 Sep 2026US 12,743,041 B2Canon Kabushiki Kaisha
- Printer apparatus with upstream toner recycling function15 Sep 2026US 12,736,895 B2Avision Inc.
- Image forming apparatus15 Sep 2026US 12,736,900 B2Canon Kabushiki Kaisha
- Image forming apparatus with a reflector disposed on a cleaning blade support15 Sep 2026US 12,736,909 B2Ricoh Company, Ltd.
- Image forming apparatus8 Sep 2026US 12,730,396 B2Canon Kabushiki Kaisha
- Developer accommodating container and image forming apparatus1 Oct 2026US 2026/0299464 A1Canon Kabushiki Kaisha
- Image forming apparatus for transferring a developer image from an image carrier to a recording medium24 Sep 2026US 2026/0288033 A1Canon Kabushiki Kaisha
- Image forming apparatus24 Sep 2026US 2026/0288052 A1Canon Kabushiki Kaisha
- Method of cleaning developing agent stuck to image carrier in image forming apparatus24 Sep 2026US 2026/0288057 A1Canon Kabushiki Kaisha
- Electrophotographic image forming apparatus, process cartridge, and image forming method10 Sep 2026US 2026/0267253 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Cleaning blade and apparatus employing the same130US 5,162,858 ACanon Kabushiki Kaisha · 1992
- Electrophotographic process and apparatus119US 4,071,361 ACanon Kabushiki Kaisha · 1978
- Blade member having a flat-surface side and an angled-surface side101US 5,470,635 ACanon Kabushiki Kaisha · 1995
- Process cartridge with blade member having a flat-surface side and an angled-surface side89US 5,608,509 ACanon Kabushiki Kaisha · 1997
- Apparatus for forming an electrophotographic latent image74US 4,967,231 AElectric Co., Ltd. · 1990