G03G 21/1671
For the photosensitive element
Official title: {for the photosensitive element}
G03G21/1671 (For the photosensitive element) appears on 563 US grants and 496 published applications in this corpus.
Search patents in G03G- Granted patents
- 563
- Published applications
- 496
- Assignees
- 61
- Inventors
- 706
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 1 |
| 2003 | 3 | 2 |
| 2004 | 1 | 1 |
| 2005 | 3 | 9 |
| 2006 | 3 | 6 |
| 2007 | 5 | 5 |
| 2008 | 6 | 12 |
| 2009 | 3 | 10 |
| 2010 | 10 | 25 |
| 2011 | 14 | 20 |
| 2012 | 16 | 40 |
| 2013 | 29 | 14 |
| 2014 | 39 | 32 |
| 2015 | 33 | 28 |
| 2016 | 36 | 26 |
| 2017 | 17 | 26 |
| 2018 | 19 | 23 |
| 2019 | 27 | 24 |
| 2020 | 39 | 50 |
| 2021 | 47 | 39 |
| 2022 | 38 | 31 |
| 2023 | 31 | 28 |
| 2024 | 27 | 17 |
| 2025 | 17 | 19 |
| 2026 | 12 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cartridge, attachment and mounting kit29 Sep 2026US 12,748,372 B2Canon Kabushiki Kaisha
- Developing cartridge including shaft and cam having cam surface25 Aug 2026US 12,717,269 B2Brother Kogyo Kabushiki Kaisha
- Cartridge including a drum-unit with a frame that includes particular arranged recess portion and through-hole25 Aug 2026US 12,717,272 B2Canon Kabushiki Kaisha
- Image forming apparatus11 Aug 2026US 12,704,801 B2Canon Kabushiki Kaisha
- Image forming apparatus11 Aug 2026US 12,704,809 B2Canon Kabushiki Kaisha
- Image forming apparatus8 Oct 2026US 2026/0310118 A1Canon Kabushiki Kaisha
- Drum unit24 Sep 2026US 2026/0288056 A1Brother Kogyo Kabushiki Kaisha
- Cleaning device and image forming apparatus13 Aug 2026US 2026/0235979 A1FUJIFILM Business Innovation Corp.
- Cartridge and image forming apparatus16 Jul 2026US 2026/0202790 A1Canon Kabushiki Kaisha
- Image forming apparatus7 May 2026US 2026/0126751 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- System for forming color images217US 6,708,011 B2Seiko Epson Corporation · 2004
- Image forming apparatus with plural color image forming units moveable into image forming position86US 6,546,220 B1Matsushita Electric Industrial Co., Ltd. · 2003
- Molded quick change photoreceptor support77US 6,058,280 AXerox Corporation · 2000
- Supporting apparatus for a photosensitive drum68US 7,630,667 B2General Plastic Industrial Co., Ltd. · 2009
- Photoreceptor attachment device for an electrophotographic copying machine64US 4,952,989 ASharp Kabushiki Kaisha · 1990