G03G 21/168
For the transfer unit
Official title: {for the transfer unit}
G03G21/168 (For the transfer unit) appears on 356 US grants and 346 published applications in this corpus.
Search patents in G03G- Granted patents
- 356
- Published applications
- 346
- Assignees
- 41
- Inventors
- 539
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 1 |
| 2003 | 2 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 5 |
| 2006 | 2 | 9 |
| 2007 | 3 | 10 |
| 2008 | 8 | 15 |
| 2009 | 7 | 22 |
| 2010 | 13 | 17 |
| 2011 | 22 | 14 |
| 2012 | 20 | 18 |
| 2013 | 16 | 17 |
| 2014 | 19 | 20 |
| 2015 | 28 | 19 |
| 2016 | 27 | 17 |
| 2017 | 17 | 15 |
| 2018 | 11 | 15 |
| 2019 | 22 | 10 |
| 2020 | 10 | 15 |
| 2021 | 13 | 17 |
| 2022 | 20 | 18 |
| 2023 | 14 | 11 |
| 2024 | 15 | 24 |
| 2025 | 21 | 25 |
| 2026 | 15 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Intermediate transfer unit and image forming apparatus with replaceable cleaning device6 Oct 2026US 12,754,495 B2Canon Kabushiki Kaisha
- Image forming apparatus25 Aug 2026US 12,717,255 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 apparatus28 Jul 2026US 12,693,618 B2Canon Kabushiki Kaisha
- Image forming apparatus8 Oct 2026US 2026/0310118 A1Canon Kabushiki Kaisha
- Transferring waste toner removed from intermediate transfer belt21 May 2026US 2026/0140463 A1Hewlett-Packard Development Company, L. P.
- Image forming apparatus7 May 2026US 2026/0126742 A1Canon Kabushiki Kaisha
- Image forming apparatus26 Mar 2026US 2026/0086495 A1Canon Kabushiki Kaisha
- Image forming apparatus26 Mar 2026US 2026/0086497 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Photoreceptor attachment device for an electrophotographic copying machine64US 4,952,989 ASharp Kabushiki Kaisha · 1990
- Electrostatic recording apparatus56US 4,760,411 AKonishiroku Photo Industry Co., Ltd. · 1988
- Cleaning unit and toner recovery system for image formation unit33US 5,617,195 AFuji Xerox Co., Ltd. · 1997
- Color image forming apparatus including process cartridge31US 5,887,228 ARicoh Company, Ltd. · 1999
- Image forming apparatus having belt unit31US 7,623,809 B2Brother Kogyo Kabushiki Kaisha · 2009