G03G 21/0011
Using a blade
Official title: {using a blade; Details of cleaning blades, e.g. blade shape, layer forming}
G03G21/0011 (Using a blade) appears on 1,207 US grants and 1,115 published applications in this corpus.
Search patents in G03G- Granted patents
- 1,207
- Published applications
- 1,115
- Assignees
- 100
- Inventors
- 2,080
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 7 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 15 | 0 |
| 1986 | 9 | 0 |
| 1987 | 13 | 0 |
| 1988 | 5 | 0 |
| 1989 | 13 | 0 |
| 1990 | 17 | 0 |
| 1991 | 12 | 0 |
| 1992 | 15 | 0 |
| 1993 | 15 | 0 |
| 1994 | 13 | 0 |
| 1995 | 18 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 13 | 0 |
| 1999 | 8 | 0 |
| 2000 | 13 | 0 |
| 2001 | 8 | 4 |
| 2002 | 11 | 16 |
| 2003 | 13 | 22 |
| 2004 | 20 | 24 |
| 2005 | 8 | 28 |
| 2006 | 17 | 33 |
| 2007 | 25 | 52 |
| 2008 | 27 | 38 |
| 2009 | 24 | 49 |
| 2010 | 44 | 62 |
| 2011 | 51 | 43 |
| 2012 | 37 | 36 |
| 2013 | 38 | 47 |
| 2014 | 51 | 69 |
| 2015 | 92 | 55 |
| 2016 | 69 | 63 |
| 2017 | 41 | 66 |
| 2018 | 68 | 84 |
| 2019 | 81 | 53 |
| 2020 | 54 | 55 |
| 2021 | 53 | 39 |
| 2022 | 30 | 34 |
| 2023 | 23 | 25 |
| 2024 | 34 | 47 |
| 2025 | 25 | 41 |
| 2026 | 20 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Printing equipment for metallic material and printing method using same8 Sep 2026US 12,730,405 B2Posco
- Cleaning device and image forming device including the same1 Sep 2026US 12,724,376 B2Sharp 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
- 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
- Image forming apparatus and process cartridge27 Aug 2026US 2026/0251990 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Cleaning blade and apparatus employing the same130US 5,162,858 ACanon Kabushiki Kaisha · 1992
- 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
- Cleaning device, process cartridge, cleaning member and electrophotographic image forming apparatus66US 7,158,749 B2Canon Kabushiki Kaisha · 2007
- Removable developing units for a copying machine and display for indicating the useful life of the machine61US 4,974,020 AMita Industrial Co., Ltd. · 1990