G03G 15/056
Apparatus for electrographic processes using a charge pattern: using internal polarisation
Official title: using internal polarisation
G03G15/056 (Apparatus for electrographic processes using a charge pattern: using internal polarisation) appears on 14 US grants and 4 published applications in this corpus.
Search patents in G03G- Granted patents
- 14
- Published applications
- 4
- Assignees
- 9
- Inventors
- 22
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Optical apparatus and image pickup apparatus27 Nov 2018US 10,139,548 B2Canon Kabushiki Kaisha
- Image forming method and apparatus employing ferroelectrics, and image formation medium27 Aug 2002US 6,440,624 B2Fuji Photo Film Co., Ltd.
- Process for imaging a ferroelectric printing form and printing head29 Feb 2000US 6,031,551 AMAN Roland Druckmaschinen AG
- Reversible or irreversible production of an image23 Jul 1996US 5,538,824 ABASF SE
- Light scanning apparatus and image forming apparatus19 Sep 2024US 2024/0310748 A1Canon Kabushiki Kaisha
- Electroconductive roller12 Sep 2019US 2019/0278196 A1Hewlett-Packard Development Company, L. P.
- Optical apparatus and image pickup apparatus11 Jan 2018US 2018/0011239 A1Canon Kabushiki Kaisha
- Image forming method and apparatus employing ferroelectrics, and image formation medium20 Sep 2001US 2001/0023046 A1Fuji Photo Film Co., Ltd.
Most cited
By later US patents
- Method and apparatus for xerographically printing a composite record of fixed and variable data26US 4,124,286 ABurroughs Corporation · 1978
- Image apparatus having a color separation function19US 4,734,735 AKonishiroku Photo Industry Co., Ltd. · 1988
- Apparatus for forming color images and method of use thereof9US 4,731,313 AKonishiroku Photo Industry Co., Ltd. · 1988
- Color electrophotographic process4US 4,007,044 ARicoh Company, Ltd. · 1977
- Electrophotographic process with a.c. charger producing greater positive charge4US 4,526,848 AOlympus Optical Co., Ltd. · 1985