G03G 5/0688
Containing hetero rings
Official title: {containing hetero rings}
G03G5/0688 (Containing hetero rings) appears on 68 US grants and 8 published applications in this corpus.
Search patents in G03G- Granted patents
- 68
- Published applications
- 8
- Assignees
- 20
- Inventors
- 137
- Latest grant
- 23 Nov 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 8 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 3 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus23 Nov 2021US 11,181,837 B2Canon Kabushiki Kaisha
- Electrophotographic photoreceptor and image-forming apparatus17 Dec 2013US 8,609,309 B2Mitsubishi Chemical Corporation
- Azo compound and method of preparing the azo compound24 Sep 2013US 8,541,557 B2Ricoh Company, Ltd.
- AZO pigment, electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus13 Nov 2012US 8,309,696 B2Canon Kabushiki Kaisha
- Electrophotographic photoreceptor and image-forming apparatus16 Oct 2012US 8,288,066 B2Mitsubishi Chemical Corporation
- Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus31 Dec 2020US 2020/0409279 A1Canon Kabushiki Kaisha
- Azo compound and method of preparing the azo compound4 Oct 2012US 2012/0253025 A1Ricoh Company, Ltd.
- Electrophotographic photoreceptor and image-forming apparatus10 Feb 2011US 2011/0033792 A1Mitsubishi Chemical Corporation
- Azo pigment, electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus25 Mar 2010US 2010/0075239 A1Canon Kabushiki Kaisha
- Azo compound and method of preparing the azo compound1 Jan 2009US 2009/0005546 A1Ricoh Company, Ltd.
Most cited
By later US patents
- Positively-chargeable single-layered type electrophotographic photoconductor64US 5,492,784 ARicoh Company, Ltd. · 1996
- Electrophotographic photoreceptor comprising azo compounds51US 4,618,555 AMitsubishi Chemical Ind., Ltd. · 1986
- Photosensitive member containing an azo dye44US 5,077,164 AMinolta Camera Kabushiki Kaisha · 1991
- Electrophotographic photoconductor33US 5,677,094 ARicoh Company, Ltd. · 1997
- Electrophotographic receptors with charge generating azo-substituted tetraphenyl-thiophene or thiophene 1,1-dioxide31US 4,808,503 AMitsui Toatsu Chemicals, Inc. · 1989