G03G 15/0266
Arrangements for controlling the amount of charge
Official title: {Arrangements for controlling the amount of charge}
G03G15/0266 (Arrangements for controlling the amount of charge) appears on 851 US grants and 702 published applications in this corpus.
Search patents in G03G- Granted patents
- 851
- Published applications
- 702
- Assignees
- 84
- Inventors
- 1,406
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 12 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 9 | 0 |
| 1990 | 12 | 0 |
| 1991 | 7 | 0 |
| 1992 | 11 | 0 |
| 1993 | 9 | 0 |
| 1994 | 18 | 0 |
| 1995 | 19 | 0 |
| 1996 | 17 | 0 |
| 1997 | 14 | 0 |
| 1998 | 18 | 0 |
| 1999 | 12 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 5 |
| 2002 | 5 | 6 |
| 2003 | 9 | 9 |
| 2004 | 8 | 13 |
| 2005 | 11 | 16 |
| 2006 | 14 | 13 |
| 2007 | 6 | 24 |
| 2008 | 11 | 33 |
| 2009 | 15 | 15 |
| 2010 | 34 | 28 |
| 2011 | 16 | 21 |
| 2012 | 21 | 18 |
| 2013 | 19 | 33 |
| 2014 | 29 | 24 |
| 2015 | 38 | 25 |
| 2016 | 39 | 50 |
| 2017 | 50 | 49 |
| 2018 | 42 | 52 |
| 2019 | 56 | 50 |
| 2020 | 57 | 30 |
| 2021 | 19 | 29 |
| 2022 | 25 | 34 |
| 2023 | 27 | 40 |
| 2024 | 36 | 31 |
| 2025 | 27 | 36 |
| 2026 | 17 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Light emitting members6 Oct 2026US 12,754,493 B2Hewlett-Packard Development Company, L. P.
- Image forming apparatus that charges an image bearing member using a voltage set according to an environmental temperature22 Sep 2026US 12,743,038 B2Canon Kabushiki Kaisha
- Image forming apparatus25 Aug 2026US 12,717,255 B2Canon Kabushiki Kaisha
- Image forming apparatus25 Aug 2026US 12,717,266 B2Canon Kabushiki Kaisha
- Image forming apparatus18 Aug 2026US 12,710,705 B2Canon Kabushiki Kaisha
- Charging device and image forming apparatus1 Oct 2026US 2026/0299455 A1FUJIFILM Business Innovation Corp.
- Charging device and image forming apparatus1 Oct 2026US 2026/0299456 A1FUJIFILM Business Innovation Corp.
- Charging device and image forming apparatus1 Oct 2026US 2026/0299458 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus10 Sep 2026US 2026/0267255 A1Canon Kabushiki Kaisha
- Apparatus and method for protecting an image forming apparatus3 Sep 2026US 2026/0261135 A1Hewlett-Packard Development Company, L. P.
Most cited
By later US patents
- Image forming apparatus with a contact member contacting an image carrier301US 5,585,896 ARicoh Company, Ltd. · 1996
- Electrophotographic charging system and method58US 5,079,669 A1992
- Electrometer apparatus for reproduction machines45US 3,998,538 AXerox Corporation · 1976
- Image formation condition controlling apparatus based on fuzzy inference40US 5,029,314 ACanon Kabushiki Kaisha · 1991
- Apparatus for forming an image with use of electrophotographic process including gradation correction37US 5,206,686 AMinolta Camera Kabushiki Kaisha · 1993